Eastern Mojave Vegetation

Detailed Area Plant List for County-Wide, Jefferson County, United States.

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Edited by Tom Schweich

This list is assembled from personal collections, herbarium vouchers, and published lists. For California, much of the data is provided by the participants of the Consortium of California Herbaria as indicated by a single dagger “†.” Their web site is at: (http://ucjeps.berkeley.edu/consortium/). For Colorado, much of the data is provided by the Southwest Environmental Information Network as indicated by a double dagger “‡,” which web site is found at (http://swbiodiversity.org). See their respective websites for copyright information and recommended citation formats.

For a complete list of Locations included in this Area List, see the Locations Included section, below.

For a check list, please see: Check List for County-Wide, Jefferson County, United States.

Bryophyta

Bryophyte CalPhotos. Jepson eFlora. SEINet Taxon.

- North Washington Open Space, Deferred. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue. 2.3 km. northwest of GNIS location of Golden. Upper slope of cut bank, north side of open space. Tom Schweich 2014. 16 Apr 2019. ( KHD ) .

Azollaceae

Azolla mexicana C. Presl.  Mexican Mosquito Fern. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Under willows, slow moving water from leaking reservoir above. West of McIntyre Bridge on Hwy 58 from Denver to Golden. North side of road right past westbound on-ramp from McIntyre Bridge. UTM: 13 E0484530 N4402533. Scott Smith 1 Sep 2008. ( COLO00941484 ) .

Dryopteridaceae

Cystopteris fragilis (L.) Bernh.  Brittle Bladderfern. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lookout Mountain, On dry soil banks in ponderosa pine-douglas fir ravine. Ralph Cannon ranch, Lookout Mountain. Hansford T. Shacklette 5924. 4 Jul 1959. ( COLO00861963 ) Rocky situations. Lookout Mountain. 13N 0479600E 4397885N. Unknown 1 Sep 1917. ( KHD4948 ) .

- North Table Mountain Park, East-facing rock crevices. Rim of mesa, head of unnamed canyon draining southeast to Clear Creek, 1.8 km. north northeast of the GNIS location of Golden. Tom Schweich, with Greg McKittrick 1447.1 22 Jun 2016. ( JCOS s.n. ) .

- South Table Mountain, In wet moss and rock crevices A lava capped mesa in the Denver Formation. frequent, S. Table Mt., a lava capped mesa. At head of W fork of 1st N facing gully E of Castle Rock. 13N 0483140E 4400820N. Loraine Yeatts 2392. 13 May 1987. ( COLO 00945303 KHD24507 ) . .

Woodsia oregana D.C. Eaton ssp. cathcartiana (B.L. Rob.) Windham.  Rocky Mountain Woodsia. CalPhotos. Jepson eFlora. SEINet Taxon.

Of the three characters that distinguish subsp. cathcartiana from subsp. oregana, two, spore size and adaxial epidermal cell size, require measuring in units of µm, something outside the usual abilities of the field botanist. The third character, regarding the cells on pinnule margins being irregular in shape making the margins appear ragged, can be seen with a good microscope.

- Lippincott Property, Deep shade. Determined by comparison to Coll. No. 2069, which was made from the same plants. Jointly owned by City of Boulder OSMP and Jefferson County Open Space, south bank of Bull Gulch, 23.0 km. north northwest of the GNIS location of Golden. Tom Schweich 2019. 18 Apr 2019. ( CIBO JCOS s.n. KHD ) Deep shade. Same as Coll. No. 2019, 18 Apr 2019. Jointly owned by City of Boulder OSMP and Jefferson County Open Space, south bank of Bull Gulch, 23.0 km. north northwest of the GNIS location of Golden. Tom Schweich 2069. 6 Jun 2019. ( CIBO JCOS s.n. KHD ) .

- North Table Mountain, as Woodsia oregana White, Sally, and Loraine Yeatts, 1994 .

- North Table Mountain Park, Under an east-facing rock overhang. Southeastern portion of North Table Mountain, near the North Table Loop, where it passes through the top basalt rim of the mountain, 1.8 km. north northeast of the GNIS location of Golden. Tom Schweich 1343. 12 May 2016. ( JCOS s.n. KHD00063429 ) Western slope of North Table Mountain, in boulders of the break in slope formed by the lowest basalt flow embedded in the Denver Formation, 3.1 km. north of the GNIS location of Golden. Tom Schweich 1734. 15 Aug 2017. ( KHD00065322 ) East-facing rock crevices. Rim of mesa, head of unnamed canyon draining southeast to Clear Creek, 1.8 km. north northeast of the GNIS location of Golden. Tom Schweich, with Greg McKittrick 1447. 22 Jun 2016. .

- South Table Mountain, Growing under rock, SW facing gully. South Table Mountain. 13N 0482600E 4400600N. Janet L. Wingate 2370. 1 Jun 1983. ( KHD13185 ) Overhanging ledge of volcanic rock near drainage on W. side of mesa. S. Table Mt, UTM coord. 822004. 13N 0482200E 4400400N. Mary E. Edwards 430. 1 Jun 1983. ( KHD20849 ) .

Equisetaceae

Equisetum arvense L.  Field Horsetail. CalPhotos. Jepson eFlora. SEINet Taxon.

- Meyer Ranch Park, Wet meadow-ground moist surrounded by mosses and covered by dead grasses and reeds USA, Colorado, Jefferson County, Meyer Ranch Park, Jefferson County Open Space, west of the intersection of HWY 285 and Turkey Creek Road. Verbatim Coordinates: 13S 0476468N 4377346E. Carol Winther 2. 5 May 2004. ( KHD32359 ) Habitat: under aspens; hillside with drainage, with Viola adunca USA, Colorado, Jefferson County, Meyer Ranch Park, Jefferson County Open Space, west of the intersection of HWY 285 and Turkey Creek Road. Verbatim Coordinates: 13S 0476428E 4377185N; Carol Winther 25. 26 May 2004. ( KHD32387 ) USA, Colorado, Jefferson County, Meyer Ranch Park, Jefferson County Open Space, west of the intersection of HWY 285 and Turkey Creek Road. Carol Winther 80. 23 Jun 2004. ( KHD32443 ) . .

Equisetum hyemale L.  Tall Scouring Rush. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, as Hippochaete h. Zeise, Larry Steven, 1976 . .

Equisetum laevigatum A. Braun.  Smooth Horsetail. CalPhotos. Jepson eFlora. SEINet Taxon.

- Colorado School of Mines Survey Field, High plains at the base of the Front Range, growing in dense vegetation along banks of a small creek. Eastern, lower section of the Survey Field, 2.2 km. south of the GNIS location of Golden. Tom Schweich 1435. 15 Jun 2016. ( CS KHD00063428 UC UCR277996 ) .

Pteridaceae

Argyrochosma fendleri (Kunze) Windham.  Fendler's False Cloak Fern. CalPhotos. Jepson eFlora. SEINet Taxon.

- South Table Mountain, Front Range, South Table Mountain, a lava capped mesa in the Denver Formation, 1st major N facing gully E. of Castle Rock. 13N 0483130E 4399950N. Loraine Yeatts 1457. 4 Jun 1987. ( KHD25152 ) . .

Cheilanthes feei T. Moore.  Slender Lipfern. CalPhotos. Jepson eFlora. SEINet Taxon.

- South Table Mountain, a lava capped mesa in the Denver formation; in crevices on N. facing vertical, barren, 50 ft. cliff face. Front Range, S. Table Mt., a lava capped mesa in the Denver formation; UTM coord. 8323E0100N. 13N 0483230E 4401000N. Loraine Yeatts 2392. 18 Jun 1990. ( COLO00677385 KHD28291 ) .

Selaginellaceae

Selaginella densa Rydb.  Rock Spikemoss. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 . .

Selaginella mutica D.C. Eaton ex Underw.  Bluntleaf Spikemoss. CalPhotos. Jepson eFlora. SEINet Taxon.

- Clear Creek Canyon, Cliffs just above high water level, canyonside. Cliffs just above high water level of Clear Creek, canyonside just W of Tunnel No. 3. W.A. Weber, with Tim Hogan 17860. 28 Sep 1987. ( COLO00672220 ) . .

Selaginella underwoodii Hieron.  Underwood's Spikemoss. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- South Table Mountain, S Table Mountain, in 2nd stream gully N of quarry on N facing rocks; UTM coord. 840006. 13N 0484000E 4400600N. Peter G. Root 854. 9 May 1985. ( KHD22019 ) . .

Selaginella weatherbiana R. Tryon.  Weatherby's Spike Moss. CalPhotos. Jepson eFlora. SEINet Taxon.

- Clear Creek Canyon, Growing on the steep cliff faces in dense mats. Clear Creek side canyon. TRS: T3S R71W SEC35 Mark Duff 160. 7 Jul 1992. ( COLO00673210 ) .

Cupressaceae

Juniperus communis L.  Common Juniper. CalPhotos. Jepson eFlora. SEINet Taxon.

- Meyer Ranch Park, Along trail under lodgepole pines . USA, Colorado, Jefferson County, Meyer Ranch Park, Jefferson County Open Space, west of the intersection of HWY 285 and Turkey Creek Road Carol Winther 31. 26 May 2004. ( KHD32394 ) . .

Juniperus communis L. var. depressa.  Common Juniper. CalPhotos. Jepson eFlora. SEINet Taxon.

- Colorado School of Mines Survey Field, Shoulder of small gulch. High plains at the lowest slopes of Lookout Mountain, northwest corner of the Survey Field, near Lookout Mountain Road, 1.95 km. southwest of the GNIS location of Golden. Tom Schweich 1606. 13 May 2017. ( CDA COLO2299782 KHD00065345 ) .

- Golden, S. M. Tracy, with Evans 22 Sep 1887. ( NY21399 ) .

- Lippincott Property, Tom Schweich 7/13/2019. .

- Tin Cup Ridge, Along the top of “Tin Cup Ridge,” the northward extension of Dinosaur Ridge into Golden, 5.4 km. south of the GNIS location of Golden. Tom Schweich 1361. 21 May 2016. ( JCOS s.n. KHD00063425 UCR277972 ) . .

Juniperus scopulorum Sarg.  (Syn: Sabina scopulorum Sarg.(Sarg.) Rydb. ) Rocky Mountain Juniper. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, Tom Schweich 4/21/2020. Mostly foothills shrubland with a few junipers, also collected nearby: Mirabilis linearis, Ranunculus glaberrimus, Grindelia squarrosa, and Andropogon gerardii. About half way up the initial Rocky Mountain Front Range scarp, near the south edge of the restricted area, 5.03 km. south of the GNIS location of Golden. Tom Schweich 2382. 17 Jul 2020. ( CAS CDA COLO CS ) .

- Golden, Golden. S. M. Tracy, with Evans 881. 22 Sep 1887. ( NY18159 ) .

- Heritage Square, Rocky hillside. 2 1/2 mi S of Golden. T R70W S10 Ernest H. Brunquist 60. 23 Sep 1959. ( CS37482 ) .

- Lippincott Property, Tom Schweich 7/13/2019. .

- Little Scraggy Peak, On top of granite outcrops. Tom Schweich 9/16/2019. .

- Magic Mountain, Tom Schweich 4/18/2018. .

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- South Table Mountain, Front Range, South Table Mountian, a lava capped mesa in the Denver Formation; clay substrate. 7.5'Golden; 1st major N facing gully E of Castle Rock; near head of dry W fork of gully. 13N 0483170E 4400845N. Loraine Yeatts 1558. 12 Oct 1987. ( COLO 00808642 KHD25155 ) .

- Windy Saddle Park, Several trees on the edge of a rocky ridge. Southeastern Windy Saddle Park, west of and above the Colorado School of Mines Survey Field, 2.19 km south southwest of the GNIS location of Golden. Tom Schweich 1244. 24 Jul 2015. ( JCOS s.n. KHD00060587 OBI83210 UC UCR267461 ) . .

Juniperus virginiana L.  Eastern Redcedar. CalPhotos. Jepson eFlora. SEINet Taxon.

Tall narrow shrub, to 2 m.; Leaves in 2s, scale-like, margin entire, tip acute, overlapping > ¼ length of next leaf, length of gland < distance to apex; Seed, #1, 4 mm. × 3 mm.

- Kinney Run, Tom Schweich 7/6/2018. .

- North Washington Open Space, Probable garden escapee. On a cut bank near the north boundary fence of the Upper Washington Avenue Open Space, 1.8 km northwest of the GNIS location of Golden. Tom Schweich 1775. 11 Apr 2018. ( CS KHD00069179 ) .

Pinaceae

Pinus ponderosa Laws.  Ponderosa Pine. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, Tom Schweich 4/21/2020. .

- Little Scraggy Peak, Tom Schweich 7/23/2019. .

- Magic Mountain, Tom Schweich 4/18/2018. .

- North Table Mountain, Zeise, Larry Steven, 1976 White, Sally, and Loraine Yeatts, 1994 Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Tom Schweich 7/13/2016. .

- Ranson/Edwards Homestead Open Space Park, Upper slopes just below the railroad tracks. Stevens parcel immediately south of the Ranson/Edwards parcel, 400 m west northwest of the Plainview Road bridge over Coal Creek, 14.5 km north northwest of the GNIS location of Golden. Tom Schweich 1316. 14 Apr 2016. ( JCOS s.n. KHD00067749 ) .

- Tin Cup Ridge, Chopped down, presumably to clear the trail. Tom Schweich 3/20/2017. .

- Windy Saddle Park, Tom Schweich 5/4/2020. . .

Pseudotsuga menziesii (Mirb.) Franco.  Douglas Fir. CalPhotos. Jepson eFlora. SEINet Taxon.

- Windy Saddle Park, Tom Schweich 5/4/2020. . .

Pseudotsuga menziesii (Mirb.) Franco var. glauca (Beissn.) Franco.  (Syn: Pseudotsuga menziesii (Mirb.) Franco var. glauca (Mayr) Franco ) Douglas Fir. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lookout Mountain, Lookout Mountain. 13N 0479612E 4398000N. Unknown 1 Jun 1913. ( KHD5797 ) .

- Mount Falcon Park, USA, Colorado, Jefferson County, in open along Parmalee trail, Mount Falcon park near indian hills. Peter G. Root 881. 29 May 1988. ( KHD26650 ) .

- North Table Mountain, Zeise, Larry Steven, 1976 .

- North Table Mountain Park, In brush on moderate northwest slope, only such tree seen. North slope of North Table Mountain, 30 m. east of and above the Mesa Top Trail (radio tower access road), 3.4 km. north of the GNIS location of Golden. Tom Schweich 1502. 13 Jul 2016. ( JCOS s.n. KHD00063565 ) .

Adoxaceae

Sambucus canadensis L.  American Black Elderberry. CalPhotos. Jepson eFlora. SEINet Taxon.

- Clear Creek, William Huestis 26 Jul 1916. ( COLO00222687 ) .

- Golden, Roadside. Roadside 58 east of Golden. J. H. Ehlers 8462. 27 Jul 1942. ( COLO00222695 ) .

Amaranthaceae

Amaranthus Pigweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain Park, Golden, Table Mountain Ranch at NW corner of North Table Mountain. Near main entrance road. 13N 0481966E 4404968N. Janet L. Wingate 1309. 18 Oct 1981. ( KHD6692 ) . .

Amaranthus albus L.  Prostrate Pigweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- South Table Mountain, Bare clay soil of mesatop. Lava capped mesa. Jefferson County, Colorado, USA. S. Table Mt., a lava capped mesa in the Denver Formation. UTM: 836003. Loraine Yeatts, with V. Richards 1088. 18 Sep 1984. ( COLO00005165 ) . .

Amaranthus arenicola I. M. Johnst.  Sandhill Pigweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain Park, Golden, Table Mountain Ranch at NW corner of North Table Mountain. Near main entrance road. 13N 0481966E 4404968N Janet L. Wingate 1188. 13 Sep 1981. ( COLO00005405 KHD6691 ) . .

Amaranthus blitoides S. Watson.  (Syn: A. graecizans L. ) Mat Amaranth. CalPhotos. Jepson eFlora. SEINet Taxon.

- Heritage Square, Open disturbed ground. Ca 2 1/2 mi S of Golden Ernest H. Brunquist 64. 23 Sep 1959. ( CS37485 ) .

- South Table Mountain, S. Table Mt. In center of hardpacked road to Castle Rock. 13N 0482800E 4400400N. Loraine Yeatts 812. 29 Aug 1983. ( COLO00005694 KHD18902 ) . .

Amaranthus powellii S. Watson.  Powell's Pigweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Heritage Square, Open disturbed dry part of creekbed Ca 2 1/2 mi S of Golden. T R70W S10. Ernest H. Brunquist 63. 23 Sep 1959. ( CS37484 ) .

- South Table Mountain, abundant & widespread, S. Table Mountain. Common along Quaker Rd. near mesa top. 13N 0484300E 4399500N. Loraine Yeatts 825. 29 Aug 1983. ( COLO00006098 KHD18903 ) . .

Froelichia gracilis (Hook.) Moq.  Slender Snakecotton. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Ca 2 1/2 mi S of Golden Ernest H. Brunquist 25. 17 Aug 1959. ( CS23911 KHD727 ) Roadside at junction of Highway 6 and Highway 58, west of Golden. 13N 0479810E 4400391N. Janet L. Wingate 1187. 12 Sep 1981. ( KHD124 ) .

Anacardiaceae

Rhus trilobata Nutt. var. trilobata.  (Syn: Rhus aromatica Aiton var. trilobata (Nutt.) A. Gray ex S. Watson ) Skunkbush Sumac. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, Tom Schweich 5/26/2020. .

- Deadman Gulch, Variety trilobata if infraspecific names are to be applied. Slightly above the watercourse locally named “Kinney Run,” between US Highway 6 and Eagle Ridge Drive, 3.2 km. south of the GNIS location of Golden Tom Schweich 2041. 2 Jun 2019. ( KHD OBI REGIS ) .

- Kinney Run, Tom Schweich 7/6/2018. .

- Magic Mountain, Tom Schweich 4/18/2018. .

- North Table Mountain, as R. trilobata Kilburn, Paul D., and Sally L. White, 1992 as R. trilobata Zeise, Larry Steven, 1976 .

- North Table Mountain Park, Lower west-facing slopes of North Table Mountain, off the North Table Loop, 500 m. north of the trailhead off CO Highway 93, 3.5 km. north of the GNIS location of Golden. Tom Schweich 1369. 24 May 2016. ( JCOS s.n. KHD00063919 UCR277973 ) Near top of small mound, also collected here: Opuntia macrorhiza and Thelesperma megapotamicum. Near the north boundary of the park, lower north slopes of North Table Mountain, in what appears to be the hummocky terrain of an ancient landslide, 6.06 km. north northeast of the GNIS location of Golden. Tom Schweich 2139. 11 Jul 2019. ( JCOS s.n. KHD ) .

- North Washington Open Space, One shrub, southwest side. Tom Schweich 8/31/2017. .

- Ranson/Edwards Homestead Open Space Park, 7/6/2019. .

- South Table Mountain, SW facing gully 13N 0482600E 4400300N. Janet L. Wingate 2375. 1 Jun 1983. ( KHD13378 ) Abundant cover plant, in fruit; Skunkbush"" S. Table Mt. W. facing slope just below mesa edge at head of minor gully. 13N 0484200E 4399200N Loraine Yeatts 699. 16 Jul 1983. ( KHD13378 KHD20698 ) .

- Tin Cup Ridge, Tom Schweich 6/30/2019. Lower east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.80 km. south southeast of the GNIS location of Golden. Tom Schweich 1861. 23 May 2018. ( CAS JCOS s.n. KHD00069142 ) . .

Toxicodendron rydbergii (Small ex Rydb.) Greene.  Western Poison Ivy. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, Tom Schweich 5/26/2020. Sparse colony in wet bottom of a narrow gulch. (In California I would have called this a ravine.) Tom Schweich 5/18/2020. .

- Clear Creek Canyon, Colorado, Jefferson County, Clear Creek Canyon. Verbatim Coordinates: 13N 0476933E 4398789N. Dick Newton 10 Apr 1976. ( KHD802 ) .

- Colorado School of Mines Survey Field, Tom Schweich 5/28/2018. .

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Tom Schweich 7/22/2016. .

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 8/27/2019. Tom Schweich 7/6/2019. Small colony near ephemeral stream. Tom Schweich 6/23/2020. .

Apiaceae

Aegopodium podagraria L.  Bishops Goutweed. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 90 cm., erect, branched, rhizomatous; Leaves, basal, petiole 150 mm., irregular to biternate, 120 mm. × 100 mm. wide, leaflet, ovate, 55 mm. × 35 mm. wide, margin serrate, cauline, reduced, sometimes opposite, ternate, leaflets, lanceolate, 53 mm. × 18 mm. wide; Inflorescence, compound umbel, 45 mm. × 75 mm. wide; Flowers, white; Ovary, glabrous, stylopodium, present; Style, #1, 1.2 mm.; Fruit, glabrous, 1.5 mm. × 1 mm. wide. Native of Eurasia, cult. in old-fashioned gardens and often escaped in ne. U.S., especially in moist, partly shaded places. Described from Coll. No. 2128, 7 Jul 2019.

- Heritage Dells, Non-varigated form. Escaping through side fence where watered, but apparently not through the back fence into unwatered open space. Not seen in Apex Gulch, City of Golden open space, 100 m. south. Backyard of 209 Berthoud Way, Golden. 5.58 km. south of the GNIS location of Golden. Tom Schweich 2128. 7 Jul 2019. ( CDA CIBO COLO JCOS s.n. KHD OBI ) . .

Aletes acaulis (Torr.) J.M. Coult. & Rose.  Stemless Indian Parsley. CalPhotos. Jepson eFlora. SEINet Taxon.

- Clear Creek Canyon, Growing on the lower canyon rock cliffs. Clear Creek side canyon. TRS: T4S R71W Sec2 Mark Duff 157. 25 Jun 1992. ( COLO00752402 ) .

- Golden, Slope: ledge, Aspect: South Rock ledge. A lava capped mesa in the Denver Formation South Table Mountain, mesa under Castle Rock. 13N 0482100E 4400400N. Loraine Yeatts 864. 30 Apr 1984. ( KHD21794 ) Rocky outcrop. 3 mi W of Golden. Ronald L. Hartman 3117. 3 Jun 1971. ( RM295563 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Collectors number is 92-66. North Table Mountain. TRS: T3S R70W S22 R.J. Rondeau, with C.A. Pague, M.A. Duff. 9266. 16 Jun 1992. ( COLO00828079 ) Edges of cliffs. Southwest rim of North Table Mountain, 1.55 km north of the GNIS location of Golden. Tom Schweich 1321. 4 May 2016. ( JCOS s.n. KHD00063815 UCR277964 ) Base of northwest-facing wall of quarry, with Hydrophyllum fendleri, Penstemon virens, Prunus virginiana, Brickellia california, and Physaria vitulifera. Top of North Table Mountain, in the main basalt quarry near the west edge of the mesa, 2.2 km. north of the GNIS location of Golden. Tom Schweich 1925. 8 Jun 2018. ( ? JCOS s.n. KHD00069136 OBI170744 ) .

- South Table Mountain, South Table Mountain field, 1 mile east of Golden. Doug Fambrough 349. 21 Jun 1961. ( VSC0009066 ) Occasional on rock ledges of S-facing cliff of mesa edge. S. Table Mt., a lava capped mesa in the Denver formation, under Castle Rock. UTM: 821004 Loraine Yeatts 869. 7 May 1984. ( COLO00007773 ) Flowers yellow; Occasional locally found, but not on S. mesa rim. Collectors number is 83-9. South Table Mountain. Aspect: SW facing slope On rocks at base of cliff rimming mesatop on SW facing slope of S Castle Rock A lava capped mesa in the Denver Formation rock. 13N 0482200E 4400300N. Peter G. Root 839. 1 Jul 1983. ( COLO00007815 KANU313743 KHD21796 ) . .

Berula erecta (Huds.) Coville.  Cut-Leaf Water Parsnip. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, growing within ditch in water Between Golden and I-70, north side of the road, CO route 58. 13 0486763E 4402917N. Stanley Smookler 16. 28 Jul 1985. ( KHD28909 ) . .

Conium maculatum L.  Common Poison Hemlock. Weed: CO DofA, List: C. CalPhotos. Jepson eFlora. SEINet Taxon.

- Clear Creek, Banks of Clear Creek, Golden. J. H. Ehlers 8391. 2 Jul 1942. ( COLO00011437 MICH1431970 ) .

- Colorado School of Mines Survey Field, High plains at the base of the Front Range, growing in dense vegetation along banks of a small creek. Colorado Noxious Weed List C. Eastern, lower section of the Survey Field, between US Highway 6 and Lookout Mountain, 2.2 km. south of the GNIS location of Golden. Tom Schweich 1436. 15 Jun 2016. ( CDA KHD00063990 UCR277995 ) .

- Golden, wet bottom of gulch In wet bottom of gulch just below road to Cabrini Shrine off U.S. 40. Also lines the road from Golden to Morrison. 13N 0480526E 4394181N. Berta Anderson 1059. 28 Jun 1979. ( KHD26583 ) George E. Osterhout 6029. 24 Jun 1920. ( RM163858 RM87369 ) 200 m. south of intersection of Hwy 6 and 19th street on west side of road. 13N 0480881E 4399372N. M. Yeatts 5. 18 Apr 1981. ( KHD29880 ) .

- Heritage Square, Partially in shade and Partially in sun. 150 yards E. of the archeological project of Peabody Museum (Harvard U.). 13N 0482115E 4396178N. T R70W S10. Ernest H. Brunquist 121. 28 Jul 1960. ( CS38196 KHD15678 ) .

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- South Table Mountain, Slope: steep, Aspect: S. Occasional in damp areas. a lava capped mountain in the Denver Formation seeping cliff S. Table Mountain, at top of S. facing seeping cliff rimming gully. 13N 0484200E 4399300N. Loraine Yeatts 642. 3 Jul 1983. ( KHD21798 ) . .

Cymopterus Raf.  Spring-Parsley. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lippincott Property, Later collected, No. 2023 Tom Schweich, with Irene Weber 4/24/2019. . .

Harbouria trachypleura (A. Gray) J.M. Coult. & Rose.  (Syn: Thaspium trachypleurum A. Gray ) Whiskbroom Parsley. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, Small opening among Rocky Mountain junipers and ponderosa pines; also collected here: Erysimum capitatum and Physaria montana. Northernmost quadrant of the parcel, north side of Deadman Gulch, in a small saddle near the top of the initial Rocky Mountain Front Range scarp, 4.14 km. south southwest of the GNIS location of Golden Tom Schweich 2306.1 26 May 2020. ( CDA REGIS ) .

- Colorado School of Mines Survey Field, Uncommon. Steep northwest facing slope above ephemeral creek from Lookout Mountain. Eastern, lower section of the Survey Field, between US Highway 6 and Lookout Mountain, 2.35 km. south of the GNIS location of Golden. Tom Schweich 1439. 15 Jun 2016. ( KHD00064005 ) .

- Golden, Ellsworth Bethel 22 Aug 1906. ( CS15090 ) Mountain slope. Near Golden: Gray Hill. J. H. Ehlers 6848. 2 Jun 1938. ( RM184550 ) Foothills near Golden. Marcus E. Jones A. M. 278. 20 Jun 1878. ( UTC10000 ) .

- Kinney Run, Tom Schweich 5/15/2020. .

- Little Scraggy Peak, Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 46.5 km. south of the GNIS location of Golden. Tom Schweich 1904. 31 May 2018. ( CAS KHD00069137 OBI170748 ) .

- North Table Mountain, White, Sally, and Loraine Yeatts, 1994 .

- Ranson/Edwards Homestead Open Space Park, On break in slope above reservoir. High plains above Rocky Flats, 15.8 km. north northwest of the GNIS location of Golden, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.4 mi. north on Plainview Road, then 620 m. north of Plainview Road. Tom Schweich 1380. 29 May 2016. ( CS JCOS s.n. KHD00063829 ) Among grasses and ponderosa pines, near top of south-facing slope. 1.6 mi. west on CO Hwy 72 from CO Hwy 93, then 2.4 mi. northerly on Plainview Road, then 40 m. or so south of the road. 16 km. north northwest of the GNIS location of Golden. Tom Schweich 1408. 10 Jun 2016. ( COLO02348357 EIU JCOS s.n. KHD00063836 ) .

- Tin Cup Ridge, Open, rocky ridge with Cercocarpus and ponderosa pine. Along the top of “Tin Cup Ridge,” the northward extension of Dinosaur Ridge into Golden, 5.5 km. south of the GNIS location of Golden Tom Schweich 1357. 21 May 2016. ( CAS JCOS s.n. KHD00063839 OBI83173 UC UCR278787 ) .

- Vidler's Gulch, South facing slope, Vidler's Gulch, Golden. Hazel M. Schmoll 720. 29 Jun 1923. ( COLO00013490 ) . .

Ligusticum porteri J.M. Coult. & Rose.  Porter's Licorice-Root. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, [Redacted} Mary E. Edwards [..]. ( CS79396 KHD30923 ) [Redacted] Stanley Smookler [..]. ( KHD28296 ) . .

Lomatium orientale J.M. Coult. & Rose.  Northern Idaho Biscuitroot. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, to 20 cm., woody taproot; Leaves, compound, pinnate, 75 mm. × 26 mm. wide, ultimate divisions, ≤3 mm., ≤1 mm. wide, villous, tips, obtuse, (with a very small white “spine”); Inflorescence, compound umbel; Involucel Bracts, glabrous; Flowers, white; Anthers, red; Ovary, glabrous, stylopodium, absent; Fruit, 5 mm. × 3.5 mm. wide, ovate, glabrous, dorsally compressed, lateral ribs winged (Described from Coll. No. 1837, 17 May 2018).

- Apex Park - Northern Parcel, Tom Schweich 4/21/2020. .

- Clear Creek Canyon, north edge of highway gravel US #40, about 1/4 mile west of junction with #6, north edge of highway. 13N 0483484E 4396854N. Ernest H. Brunquist 281. 18 May 1965. ( KHD15724 ) .

- Colorado School of Mines Survey Field, Highest Great Plains at the base of the Rocky Mountain Front Range, southeast-facing slope, above an unnamed stream in the south end of the Survey Field, 2.36 km. south of the GNIS location of Golden. Tom Schweich 1895. 28 May 2018. ( COLO02347649 CS ) .

- Heritage Square, MVNC S-U, 25-27, , Condition: fair. About 150 yards northeast of "Dig." 13N 0481852E 4396308N; Ernest H. Brunquist 80. 17 Apr 1960. ( KHD15674 ) Alpine ridge; tundra and boulder fields; full sun and wind exposure., , Condition: fair. About 150 yards northeast of the Dig. 13N 0481852E 4396308E. Ernest H. Brunquist 92. 27 May 1960. ( KHD15716 ) .

- Lippincott Property, In thick soil and forest duff on the exposed east side of a ridge. Jointly owned by City of Boulder OSMP and Jefferson County Open Space, near the northern edge of the property and the Boulder County boundary, east side of ridge, 25.6 km. north northwest of the GNIS location of Golden. Tom Schweich 2031. 26 May 2019. ( CDA CIBO JCOS s.n. ) .

- Lookout Mountain, gravelly soil Lookout Mountain. 13N 0479440E 4397715N. Unknown 30 May 1914. ( KHD8063 ) .

- Magic Mountain, Tom Schweich 4/18/2018. .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Widespread on mesa-top lava flow derived soils and colluvial soils of upper and lower slopes. Top of mesa, near southwest edge, 1.55 km north of the GNIS location of Golden. Tom Schweich 1322. 4 May 2016. ( JCOS s.n. KHD00063812 OBI83175 UCR278795 ) .

- North Washington Open Space, Tom Schweich 5/2/2017. .

- Ranson/Edwards Homestead Open Space Park, Occasional on drier or more-exposed surfaces. On a somewhat rocky alluvial terrace, north side of an unnamed creek, 1.2 miles north on Plainview Road from the intersection with Colorado State Highway 72, Coal Creek Canyon Road, and then 200 m east across the field. Tom Schweich 1077. 23 Mar 2015. ( JCOS s.n. ) Gentle east-facing grassy slopes. Stevens parcel just south of Ranson/Edwards parcel, about 180 m. northwest of the Plainview Road bridge over Coal Creek, 3.65 km west southwest of the GNIS location of Rocky Flats, Tom Schweich 1326. 5 May 2016. ( CS JCOS s.n. KHD00063813 OBI83174 UCR278788 ) Along a low ridge that is a little drier and rockier than surrounding grass land; moss growing on bare soil. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 567 m. northeast past the old homestead, about 15.9 km. north of the GNIS location of Golden. Tom Schweich 1837. 17 May 2018. ( COLO02347672 EIU ) Geographic coordinates estimated with GoogleEarth. High plains above Rocky Flats, 1.7 mi. west on CO 72 from CO 93, 1.2 mi. generally north on Plainview Road, then approx. 300 m. northeast on an old road in the direction of the original homestead. Open prairie, lightly grazed in some recent years. Tom Schweich 2075. 10 Jun 2019. ( CIBO EIU REGIS ) .

- South Table Mountain, A lava capped mesa in the Denver Formation. On mesa edge among lava boulders at top of S. facing slope. S. Table Mt. UTM: 842994 Loraine Yeatts 465. 2 May 1983. ( COLO00016089 ) a lava capped mesa in the Denver Formation; on mesa edge among lava boulders at top of S. facing slope lava capped mesa in the Denver Formation. S. Table Mountain, on mesa edge among boulders. 13N 0484200E 4399400N. Loraine Yeatts 466. 2 May 1983. ( KHD21802 ) Clay loam, level area on mesa. Collector's number is 54-3. Mesa 0.5 mi. s. of Golden, Colorado. Margaret M. Douglass 543. 8 Apr 1954. ( COLO00016352 ) .

- Tin Cup Ridge, Thin soils between layers of upturned strata. Along the top of “Tin Cup Ridge,” the northward extension of Dinosaur Ridge into Golden, 5.5 km. south of the GNIS location of Golden Tom Schweich 1356. 21 May 2016. ( CAS JCOS s.n. KHD00063817 OBI83166 UC UCR ) .

- Windy Saddle Park, Tom Schweich 5/4/2020. . .

Musineon divaricatum (Pursh) Raf.  Leafy Wildparsley. CalPhotos. Jepson eFlora. SEINet Taxon.

- Deadman Gulch, Slightly above the watercourse locally named “Kinney Run,” between US Highway 6 and Eagle Ridge Drive, 50 m. northwest of Kinney Run Trail, 3.17 km. south of the GNIS location of Golden. Tom Schweich 2042.1 2 Jun 2019. ( KHD ) .

- Lippincott Property, Heavy clay soil. Jointly owned by City of Boulder OSMP and Jefferson County Open Space, south parcel, high prairie above Rocky Flats, 21.7 km. north northwest of the GNIS location of Golden. Tom Schweich, with Irene Weber 2023. 24 Apr 2019. ( CIBO JCOS s.n. KHD ) .

- Ranson/Edwards Homestead Open Space Park, Tom Schweich, with Irene Weber 5/22/2019. .

- South Table Mountain, Weed in disturbed area at edge of house lot. Locally common., , Condition: fair. a lava capped mesa in the Denver Formation; on east facing roadcut a lava capped mesa in the Denver Formation. South Table Mountain, along Quaker Road on east side of roadcut. 13N 0484332E 4399032N Loraine Yeatts 496. 16 May 1983. ( KHD21800 ) . .

Osmorhiza depauperata Phil.  Blunt-Fruit Sweet-Cicely. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lippincott Property, Jointly owned by City of Boulder OSMP and Jefferson County Open Space, south bank of Bull Gulch, 23.0 km. north northwest of the GNIS location of Golden. Tom Schweich 2069.1 6 Jun 2019. ( CIBO JCOS s.n. KHD ) .

Apocynaceae

Apocynum ×floribundum Greene.  Dogbane. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 35 cm.; Leaves, cauline, opposite, spreading horizontal, petiole 2 mm. + blade 50 mm. × 24 mm. wide, ovate, margin revolute; Sepals, 2.5 mm.; Flowers, bell-shaped, 6 mm. × 5 mm. wide, >2× calyx; Petals, fused at base, tube  mm. + lobes 2 mm., pink, drying purple, lobes erect to spreading, none reflexed; Stamens, 5. Filaments, distinct; More like A. androsaemifolium than A. cannabinum, but it seems to best fit the description of the hybrid A. ×floribundum. (Described from Coll. No. 1442, 22 June 2016.)

- Little Scraggy Peak, Openings in ponderosa pine, also seen/collected here; Achillea millefolium, Sedum lanceolatum, Oxytropis lambertii, Verbascum thapsus, and Elymus elymoides. Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, fairly close to Little Scraggy trailhead, about 4 mi. south of town of Buffalo Creek by Cty Rd 126, 60.3 km. south of the GNIS location of Golden. Tom Schweich 2180. 23 Jul 2019. ( KHD OBI REGIS UCR ) .

- North Table Mountain Park, Western side of North Table Mountain, in roadside ditch along road to City of Golden water tank, 2.8 km. north of the GNIS location of Golden. Tom Schweich, with Greg McKittrick 1442. 22 Jun 2016. ( JCOS s.n. KHD00063840 OBI83328 UCR278005 ) .

- Ranson/Edwards Homestead Open Space Park, In dense vegetation at edge of old road. Flood plain of Coal Creek, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. generally north on Plainview Road, then 340 m. generally east on an old road leading to Coal Creek; 14.7 km. north northwest of the GNIS location of Golden. Tom Schweich 1466. 27 Jun 2016. ( COLO02348878 CS JCOS s.n. KHD00063977 ) Along old road in the direction of the original homestead. High plains above Rocky Flats, 1.7 miles west on CO Highway 72 from CO Highway 93, 1.3 miles north on Plainview Road, then 20 meters east into open prairie. Tom Schweich 1678. 28 Jun 2017. ( CDA EIU JCOS s.n. KHD00065483 ) High plains above Rocky Flats, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.3 mi. generally north on Plainview Road, then 50 m. northeast on an old ranch road, 20.0 km. north northwest of the GNIS location of Golden. Tom Schweich 2378. 23 Jun 2020. ( CAS COLO CS UC ) . .

Apocynum androsaemifolium L.  Bitter Dogbane. CalPhotos. Jepson eFlora. SEINet Taxon.

- Plainview, Location as “Plainsview.” Ellsworth Bethel Jun 1905. ( CS16335 ) . .

Apocynum cannabinum L.  Indian Hemp. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, George E. Osterhout 6030. 24 Jun 1920. ( RM16264 ) .

- North Table Mountain, Zeise, Larry Steven, 1976 .

- South Table Mountain, west wet gully S. Table Mountain, Just above and at head of wettest part of minor gully on W. facing slope below mesa edge. 13N 0483933E 4399485N. Loraine Yeatts 703. 16 Jul 1983. ( COLO00022384 KHD18904 ) .

Araliaceae

Aralia nudicaulis L.  Wild Sarsaparilla. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lookout Mountain, Lookout Mountain William Huestis 2 Aug 1916. ( COLO00022525 ) .

- Vidler's Gulch, Shady, damp place between Populus tremuloides, Betula, Alnus. Vidler's Gulch, Golden. Hazel M. Schmoll 721. 29 Jun 1923. ( COLO00021733 ) .

Asclepiadaceae

Asclepias incarnata L.  Swamp Milkweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Clear Creek, Verbatim Coordinates: 13N 0483324E 4401887N. USA, Colorado, Jefferson County, Clear Creek, near Lewis Station on Trarway (sic) line. Unknown 8698. 3 Aug 1913. ( KHD8698 ) . .

Asclepias pumila (A. Gray) Vail.  Plains Milkweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, Zeise, Larry Steven, 1976 .

- North Table Mountain Park, Tom Schweich 8/18/2016. Growing in low grasses and forbs. Lower north slopes of North Table Mountain, 0.79 km southeast of the Mesa Spur Trailhead in 58th Avenue, 4.65 km. north northeast of the GNIS location of Golden. Tom Schweich 1508. 22 Jul 2016. ( EIU JCOS s.n. KHD00063944 UC ) .

- South Table Mountain, Slop: open, Aspect: West W. facing open slope above head of drainage S. Table Mountain, above head of drainage. Loraine Yeatts 579. 2 Aug 1983. ( COLO00023754 KHD18905 ) [ This collection number, 579, is duplicated by a collection Scutellaria brittonii made on 16 Jun 1983, and seems a little odd given the date of the collection. I think it's more likely that this is collection #759. ] Habitat: a lava capped mesa in the Denver Formation; flat meadow in disturbed roadbed; with Chryosthamnus nauseosus USA, Colorado, Jefferson County, S. Table Mt., flat meadow S. of hill 6020 in disturbed roadbed Loraine Yeatts 1340. 25 Aug 1986. ( KHD24156 ) . .

Asclepias speciosa Torr.  Showy Milkweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Colorado School of Mines Survey Field, In a ditch adjacent to an old dirt road, near the center of the Survey Field, 2.2 km south southeast of the GNIS location of Golden. Tom Schweich 1204. 12 Jul 2015. ( KHD00062142 ) .

- Golden, Between bicycle trail and the Church Ditch. Seed pod covered with tubercles. Tom Schweich 8/19/2014. .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Zeise, Larry Steven, 1976 .

- North Washington Open Space, Determination tentative. Tom Schweich 3/27/2017. .

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 7/26/2015. .

- South Table Mountain, In swampy seeping area. S. Table Mt. Below gentle S. facing slope at edge of gully. UTM: 839994 Loraine Yeatts 707. 16 Jul 1983. ( COLO 00024059 KHD00001784 ) Habitat: swampy, seeping area USA, Colorado, Jefferson County, S. Table Mountain, Head of 1st drainage W. of Quaker Rd. Loraine Yeatts 835. 9 Sep 1983. ( KHD18906 ) .

- Tin Cup Ridge, Mixed grasses and forbs. Collected with Achillea millefolium, Erigeron tracyi, Glycyrrhiza lepidota, and Medicago lupulina. East base of the hogback locally called Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 6.4 km. south southeast of the GNIS location of Golden. Tom Schweich 2101. 30 Jun 2019. ( JCOS s.n. KHD ) . .

Asclepias stenophylla A. Gray.  Narrow-leaved Milkweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Foothills grassland. High plains above Rocky Flats, southwestern corner of the park, west of Plainview Road, along the southern fence line, and continuing to the north to an ephemeral steam. Irene Weber, with Anthony Massaro and Tanner Marshall 8 Jul 2020. ( JCOS s.n. ) Tom Schweich 7/12/2020. Tom Schweich 7/12/2020. Flagged with green flag. Tom Schweich 7/12/2020. Tom Schweich 7/12/2020. Tom Schweich 7/12/2020. Flag: green. Tom Schweich 7/12/2020. Flagged (?) Tom Schweich 7/12/2020. Flagged (?) Tom Schweich 7/12/2020. Tom Schweich 7/12/2020. Tom Schweich 7/12/2020. Tom Schweich 7/12/2020. Also here: Poa compressa, Artemisia ludoviciana, Phleum pratense, Rosa arkansana, Apocynum sp. Tom Schweich 7/12/2020. Flag: green. Tom Schweich 7/12/2020. Tom Schweich 7/12/2020. Tom Schweich 7/12/2020. Flagged with green flag. Tom Schweich 7/12/2020. Tom Schweich 7/12/2020. Tom Schweich 7/12/2020. Tom Schweich 7/12/2020. Tom Schweich 7/12/2020. Tom Schweich 7/12/2020. Tom Schweich 7/12/2020. First recognized at Ranson/Edwards by Irene Weber. CNHP rare plant rank S2, global rank G4G5. High plains above Rocky Flats, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. generally north on Plainview Road, then 550-600 m. west to the southwest corner of the parcel, 19.4 km. north northwest of the GNIS location of Golden. Tom Schweich 2379. 12 Jul 2020. ( KHD ) . .

Asclepias viridiflora Raf.  Green Comet Milkweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, Tom Schweich 6/10/2020. .

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Several plants trailside, northeast North Table Mountain. Tom Schweich 7/29/2016. .

- Ranson/Edwards Homestead Open Space Park, Observed on CoNPS field trip, coordinates approximate. Tom Schweich 7/8/2017. .

- South Table Mountain, On S. facing slope below mesa edge in clay soil; sparsely vegetated old burn site. Jefferson County, Colorado, USA. South Table Mountain. UTM: 842992 Loraine Yeatts 704. 16 Jul 1983. ( BRY0164072 COLO00025791 KHD1844 ) .

Asteraceae

Composite. CalPhotos. Jepson eFlora. SEINet Taxon.

- Little Scraggy Peak, Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 2.04 km. southwest of the Little Scraggy trailhead, 61.2 km. south of the GNIS location of Golden. Tom Schweich 2242. 16 Sep 2019. ( Golden ) . .

Achillea millefolium L.  (Syn: A. lanulosa Nutt. , A. m. L. var. alpicola (Rydb.) Garrett , A. m. L. var. lanulosa (Nutt.) Piper , A. m. L. var. occidentalis DC. ) Common Yarrow. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb to 50 cm.;; Leaves alternate, tendrils absent, finely dissected, aromatic when fresh; Inflorescence, heads enclosed by an involucre, in flat-topped clusters; Phyllaries in 2+ series; Receptacles bearing scale-like bracts (paleate); Perianth in 2 or more whorls, parts in 5s; Phyllaries in 2+ series, not all subtending ray flowers; Flowers open, bisexual, two kinds, some with strap-shaped corollas; Petals fused into a tube; Ray flowers, white, lobe ovate; Disc flowers, white; Stamens = in number to corolla lobes; Ovary inferior. Pistils, 1 per flower (Described from Coll. No. 482, 30 Nov 2011, and Coll. No. 1023, 24 Jul 2013).

- Colorado School of Mines Survey Field, Mixed shrubs and grasses on lower slopes of Lookout Mountain. High plains at the base of the Rocky Mountain Front Range, 2.4 km. south southwest of the GNIS location of Golden Tom Schweich 1485. 6 Jul 2016. ( COLO02347656 CS KHD00063993 OBI83306 ) .

- Heritage Square, open grassy field; growing with Thermopsis sp., Descurania sp., Rosa sp., Lactuca scariola, Artemesia frigida, medium-high grasses, etc.; in dark, rich soil; well-drained, Thermopsis sp., Descurainia sp., Rosa sp., Lactuca scariola, Artemisia frigida, med Collector"s collection number is “PM-102.” “PM” probably stands for “Peabody Museum.” About 50 yards west by southwest of the archeological excavation of Peabody Museum (Harvard). 13N 0481927E 4396200N. Ernest H. Brunquist 102. 8 Jul 1960. ( CS38369 KHD5649 ) . [ CS38369 determined as var. occidentalis now treated as a synonym for A. millifolium. ]

- Lippincott Property, Edge of open ponderosa pine woodland at break in slope. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, narrows of the parcel between central and southeast portions, 22 km. north northwest of the GNIS location of Golden. Tom Schweich 2083. 17 Jun 2019. ( CIBO JCOS s.n. KHD REGIS ) .

- Little Scraggy Peak, Openings in ponderosa pine, also seen/collected here; Apocynum ×floribundum, Sedum lanceolatum, Oxytropis lambertii, Verbascum thapsus, and Elymus elymoides. Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, fairly close to Little Scraggy trailhead, about 4 mi. south of town of Buffalo Creek by Cty Rd 126, 60.3 km. south of the GNIS location of Golden. Tom Schweich 2181. 23 Jul 2019. ( KHD OBI REGIS UCR ) .

- Lookout Mountain, SE-facing slope, sandy soil. Lariat Loop Rd., 1 mi. NW of I-70, 1/4 mi. SW of Golden Reservoir, SW of Golden. T4S R70W S5. J Hutchison 18. 1 Sep 1996. ( CS82047 ) .

- North Table Mountain, as A. lanulosa Kilburn, Paul D., and Sally L. White, 1992 as A. lanulosa Zeise, Larry Steven, 1976 .

- North Table Mountain Park, Top of North Table Mountain, base of north-facing rocky slope (fault scarp?) above pond, 3.3 km. north northeast of the GNIS location of Golden. Tom Schweich 1494. 13 Jul 2016. ( CS JCOS s.n. KHD00063465 ) .

- Ranson/Edwards Homestead Open Space Park, Banks of intermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 175 m. west of Plainview Road. Tom Schweich 1251. 26 Jul 2015. ( JCOS s.n. KHD00062047 UC UCR267464 ) .

- South Table Mountain, a lava capped mesa in the Denver Formation; along trail on W. facing slope lava-capped mesa in the Denver Formation S. Table Mt. along trail on W. facing slope below Castle Rock. 13N 0482100E 4400100N. Loraine Yeatts 933. 25 Jun 1984. ( KHD20610 ) .

- Tin Cup Ridge, Mixed grasses and forbs. Collected with Erigeron tracyi, Heterotheca villosa, Medicago lupulina, and Poa compressa. East base of the hogback locally called Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 6.4 km. south southeast of the GNIS location of Golden. Tom Schweich 2098. 30 Jun 2019. ( CDA COLO JCOS s.n. KHD OBI ) .

- Windy Saddle Park, Tom Schweich 5/4/2020. . .

Acroptilon repens (L.) DC.  Russian Knapweed. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain Park, Colony growing in open area near horse corals. Table Mountain Ranch, Golden, at NW base of Table Mountain. 13 0481744E 4405299N. Janet L. Wingate 8876. 4 Aug 2006. ( COLO00883884 GREE9066 KHD13845 KHD56478 ) . .

Agoseris glauca (Pursh) Raf.  (Syn: Troximon glaucum Pursh ) Pale Goat-Chicory. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, United States, Colorado, Jefferson County, Golden, off Highway 6 Sherman Lambert 1124. 23 May 1979. ( UTEP14965 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 . .

Agoseris parviflora (Nutt.) D. Dietr.  (Syn: A. glauca (Pursh) Raf. var. laciniata (D. C. Eaton) Smiley , Troximon parviflorum Nutt. ) Steppe Goat-Chicory. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 20 cm.; Leaves, basal, to 180 mm. × 6 mm. wide, not prickly, margins, generally straight (not wavy), 0- to 6-toothed, sparsely ciliate or hairy; Inflorescence, single heads on scape to 15 cm.; Phyllaries, in 2+ graduated series, 10-13-16 mm., generally green, mid-vein dark purple, margin scarious, outer phyllaries, mid-vein and margin ciliate; Ray flowers, corolla, 20-22 mm., yellow (drying more purple than pink), lobes 5; Disc flowers 0; Pappus, simple capillary bristles; Achene, surface smooth, beak unknown (immature). (Described from Coll. No. 1101, 3 May 2015)

- Apex Park - Northern Parcel, Also seen or collected here: Juniperus scopulorum, Oenothera suffrutescens, Linaria dalmatica, and Cynoglossum officinale. Northernmost quadrant of the parcel, north side of Deadman Gulch, right at the base of the Front Range scarp, 4.06 km. south of the GNIS location of Golden. Tom Schweich 2295. 26 May 2020. ( JCOS s.n. KHD OBI UCR ) .

- Colorado School of Mines Survey Field, USA, Colorado, Jefferson, Base of Lookout Mountain, Golden J. H. Ehlers 6906. 4 Jun 1938. ( UTC62024 ) .

- Golden, Dry hills. Golden. Ellsworth Bethel, with H. M. Schmoll and I. W. Clokey 4415. 9 Jun 1921. ( COLO29801 IND120683 NY1877182 RM90088 ) [ Originally ID as A. laciniata (Nutt.) Greene. Annotations: Agoseris glauca var. laciniata (Eat.) Smiley, det. Q. Jones 1953. / Agoseris glauca (Pursh) Raf. var laciniata (Eaton) Smiley, det. W. A. Weber 1993. , IND-0120683 determined as Agoseris grandiflora Kuntze. ] On clay banks. West of State School of Mines. Golden. Ellsworth Bethel, with I. W. Clokey and H. M. Schmoll 227. 19 Jun 1921. ( COLO00029843 COLO00029850 ) .

- Lookout Mountain, On slope leading to Lookout Mountain. 13N 0480756E 4398143N. Unknown 1 Jun 1913. ( KHD6374 ) .

- Mount Galbraith Park, Small saddle on ridge, 40 m north of Nightbird Gulch Trail. 2.3 km northwest of the GNIS location of Golden. Tom Schweich 1101. 3 May 2015. ( JCOS s.n. KHD56936 ) .

- South Table Mountain, Common at base of S. facing slope below mesa edge. S. Table Mt. UTM: 842996. Loraine Yeatts 535. 1 Jun 1983. ( COLO00029868 KHD19483 ) . [ Miscellaneous: Originally ID as A. glauca (Pursh) Raf. Annotations: Agoseris glauca (Pursh) Raf. var laciniata (Eaton) Smiley, det. W. A. Weber 1993. , Remains determined A. glauca (Pursh) Raf. ] .

Ambrosia artemisiifolia L.  (Syn: A. artemisiifolia L. var. elatior (L.) Descourt. ) Annual Ragweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, Zeise, Larry Steven, 1976 .

- South Table Mountain, A lava capped mesa in the Denver formation; ephemeral pond; in damp mud of last area of pond bed to dry; associates include Rorippa sinuata, Xanthium strumarium, Thlaspi arvense, Polgonum erectum ssp. Achoreum, Eleocharis acicularis, Xanthium strumarium, Sunny meadow. South Table Mountain; ephemeral pond on flats above south rim, W of Quaker Rd. 13 0483540E 4399950N. Loraine Yeatts 4207. 17 Oct 1998. ( KHD35614 ) . .

Ambrosia psilostachya DC.  Western Ragweed. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 40 cm., woody at base; Leaves opposite below, alternate above, 50 mm. × 22 mm., ovate, pinnately divided; Inflorescence indeterminate, appearing raceme-like, 2 kinds of flowers, pistillate heads many, distal, carpellate heads few, clustered in distal leafy axils; Phyllaries fused into a cup; Receptacle not chaffy; Pappus absent (Described from Coll. No. 1068, 8 Oct 2014).

- Heritage Square, Near Golden, east of Peabody Museum Dig. 13N 0481541E 4396050N. Ernest H. Brunquist 62. 23 Sep 1959. ( CS37483 KHD29957 ) Aspect: S medium-high grass (see PM-24) on a gentle, south-facing slope, medium-high grass (PM-24) very common along Quaker Rd., 100 yards east of archeological project of Peabody Museum (Harvard Univ.) 13N 0482095E 4396063N Ernest H. Brunquist 125. 2 Aug 1960. ( CS38201 KHD10301 ) .

- Kinney Run, Tom Schweich 7/6/2018. .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, South slopes of North Table Mountain, just off the Golden Cliffs Trail, and just a little below the basalt cliffs, 1.5 km north northeast of the GNIS location of Golden. Tom Schweich 1062. 29 Aug 2014. ( CAS UC2045777 ) Rocky slope with little soil development near rim of mesa. Near the south rim of North Table Mountain, accessed by way of the Golden Cliffs Trail, 1.5 km north northwest of the GNIS location of Golden. Tom Schweich 1068. 8 Oct 2014. ( JCOS s.n. OBI82138 UCR266095 ) .

- North Washington Open Space, Northeast sector, just west of the mowed area, among smooth brome. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1748. 31 Aug 2017. ( EIU KHD00065354 ) .

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 8/28/2015. High plains above Rocky Flats, 1.7 mi. west on Colorado Highway 72 from Colorado Highway 93, 1.6 mi. north on Plainview Road, then 35 meters southwest on the slope above the road. Tom Schweich 1763. 1 Sep 2017. ( CDA JCOS s.n. KHD00065167 ) .

- South Table Mountain, South table mountain, Common at edge of quaker road. 13N 0484233E 4399170N. Loraine Yeatts 768. 7 Aug 1983. ( COLO00031096 KHD19334 ) West side of South Table Mountain, along south loop of Lubahn Trail, 1.17 km east southeast of the GNIS location of Golden. Tom Schweich 1069. 16 Oct 2014. ( OBI82121 ) mesatop flats lava capped mesa in the Denver Formation S. Table Mt., along E-W road N of Quaker Rd. gate. 13N 0484291E 4399486N. Velma Richards 1383. 18 Sep 1984. ( KHD20928 ) . .

Ambrosia tomentosa Nutt.  Ragweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, Zeise, Larry Steven, 1976 . .

Ambrosia trifida L.  (Syn: A. trifida L. var. trifida ) Giant Ragweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Heritage Square, Confirmed as Delphinium nelsonii (Delphinium nuttallianum) by William Jennings and Loraine Yeatts (17 Nov 1998). [Huh? -- Ed.] 13N 0481833E 4396313N. Ernest H. Brunquist 13. 16 Aug 1959. ( CS23949 KHD24460 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- South Table Mountain, Aspect: N At base of rocky N. facing slope. (A lava capped mesa in the denver formation) lava capped mesa in the Denver Formation rocky Locally abundant, , Condition: fair S. Table Mountain, head of gully overlooking Rolling Hills Country Club. 13N 0484107E 4400381N. Loraine Yeatts 1084. 18 Sep 1984. ( COLO00031633 KHD20834 ) . .

Anaphalis margaritacea (L.) Bentham & Hooker.  Western Pearly Everlasting. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, Mixed foothills shrubland, just below the ponderosa pines, also collected nearby: Claytonia rosea, Ceanothus fendleri, and Eriogonum umbellatum var ramulosum. Near top of initial Rocky Mountain Front Range scarp, on a ridge overlooking an unnamed gulch to the north, about center of Apex Park - North, 4.84 km. south of the GNIS location of Golden Tom Schweich 2388. 17 Jul 2020. ( JCOS s.n. ) .

- North Table Mountain Park, North Table Mountain. Mark Duff 178. 16 Jun 1992. ( COLO00032193 ) . .

Antennaria parvifolia Nutt.  Small-Leaf Pussytoes. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 10 cm., stoloniferous; Stem, tomentose; Leaves, basal and cauline, basal, petiole, gradually expanding into blade, blade, 16 mm. × 6.7 mm. wide, oblanceolate, entire, glandular, tomentose, tips, pointed, cauline, 10 mm. × 2 mm. wide, linear; Inflorescence, heads enclosed by an involucre, #3 per stem, not showy; Involucre, 7 mm. × 4.5 mm. wide, cylindric; Phyllaries, 5+ series, 4 mm. × 2 mm. wide to 8 mm. × 1 mm. wide, green proximally to white (pinkish) distally, tomentose, margins, flat, scarious, tips, rounded; Receptacle, epaleate; Flowers, of 1 kind; Disk flowers, many, 6.5 mm., white; Pappus, many, well-developed, bristles, 8 mm., ±equal; Cypsela, 0.8 mm. × 0.3 mm. wide, brown, glabrous. (Described from Coll. No. 1909, 31 May 2018.)

- Apex Park - Northern Parcel, Mixed grass and foothill shrubland, near a thicket of Prunus americana and Rhus trilobata; Senecio integerrimus and Cynoglossum officinale also here. Along the eastern edge of the Apex Park - North parcel, open, north-facing aspect, 4.73 km. south of the GNIS location of Golden. Tom Schweich 2282. 18 May 2020. ( CS JCOS s.n. KHD REGIS ) .

- Colorado School of Mines Survey Field, Highest Great Plains at the Rocky Mountain Front Range, southeast portion of Survey Field, on a terrace above a small unnamed stream tributary to Deadman Gulch (Kinney Run), 2.9 km. south of the GNIS location of Golden Tom Schweich 2049. 2 Jun 2019. ( CDA COLO KHD UC ) .

- Little Scraggy Peak, Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 1.05 km. southwest of the intersection of County Roads 126 and 550, 46.5 km. south of the GNIS location of Golden. Tom Schweich 1909. 31 May 2018. ( CAS KHD00069228 OBI ) .

- Lookout Mountain, Above Golden. Mrs. Ella Bailar 1905. ( COLO00034850 ) .

- Mount Falcon Park, East-facing, grassy slope of small unnamed hill, 530 m north northwest of Mt. Falcon, approximately 13.5 km south of Golden. Tom Schweich 1128. 1 Jun 2015. ( JCOS s.n. KHD56951 UCR265986 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- South Table Mountain, Slop: gentle, Aspect: N On gentle N facing slope at edge of shrubt thicket of Mt Mahogany and ninebark. Only a few plants and only place seen on mesa, mountain mahogany and ninebark. S. Table Mt. A lava capped mesa in the Denver formation. 13N 0484008E 4400106N. Loraine Yeatts 1197. 19 May 1985. ( COLO00035006 KHD24460 ) . .

Antennaria rosea Greene.  Rosy Pussytoes. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 9 cm., stoloniferous 4-5 cm., forming loose mats in wet muddy soil, all sixteen plants collected pistillate (gynoecious?); Leaves, simple, white tomentose both sides, basal, 35 mm. × 9 mm wide, oblanceolate, cauline, 11-13 mm., linear; Inflorescence, >> basal leaves; Involucre, 5.5-7.0 mm.; Bracts (phyllaries), 5.0-6-5 mm. × 1.1-0.7 mm. wide, green at base, purplish band in middle, tips, white, scarious. (Described from Coll. No. 1083, 25 April 2015).

- Lookout Mountain, On dry slope of granite and schist in open ponderosa pine forest. Transferred from USGS Herbarium, Denver, CO (2005). Lariat Trail, Lookout Mountain. Hansford T. Shacklette 6670. 19 May 1962. ( COLO00857474 COLO13866624 ) .

- North Table Mountain, Zeise, Larry Steven, 1976 .

- Ranson/Edwards Homestead Open Space Park, Growing in patches among openings in a grassy, formerly burned open ponderosa pine woodland. 2.1 miles on Plainview Road north of Colorado State Highway 72, then 115 m west. Tom Schweich, with Matt Schweich 1083. 25 Apr 2015. ( JCOS s.n. KHD56958 UC2045771 ) . .

Arctium minus Bernh.  Lesser Burdock. Weed: CO DofA, List: C. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, Tom Schweich 6/10/2020. .

- Deadman Gulch, Also seen in several other places along Deadman Gulch. Colorado Noxious Weed List C. Along Deadman Gulch (Kinney Run), between US Highway 6 and Eagle Ridge Drive, on a bank of the creek, 3.24 km. south of the GNIS location of Golden. Tom Schweich 2425. 17 Aug 2020. ( CDA COLO CS KHD ) .

- Heritage Square, south bank of creek in partial shade, on rocks. S bank of Apex Ck about 2 1/2 mi S of Golden. T R70W S10. Ernest H. Brunquist 73. 26 Sep 1959. ( CS23957 KHD6371 ) .

- Ranson/Edwards Homestead Open Space Park, Collected with Cynoglossum officinale. Vegetative parts only, collections with flower or fruit typically made in August through October. Colorado Noxious Weed List C. High plains above Rocky Flats, west 1.7 mi. on CO Hwy 72 from CO Hwy 93, generally north 1.0 mi. on Plainview Road, then 365 m. east into a thicket, primarily of Prunus virginiana, 19.6 km. north northeast of the GNIS location of Golden. Tom Schweich 2124.1 6 Jul 2019. ( JCOS s.n. KHD ) . .

Arnica cordifolia Hook.  Heart-Leaf Leopardbane. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lookout Mountain, On moist soil bank in ponderosa pine-douglas fir ravine. Ralph Cannon ranch, Lookout Mountain. Hansford T. Shacklette 5934. 4 Jul 1959. ( COLO00857516 ) On rocky slope in dense ponderosa pine forest. Transferred from USGS Herbarium, Denver, CO (2005). Lariat Trail, Lookout Mountain. Hansford T. Shacklette 6671. 19 May 1962. ( COLO00857524 COLO00857532 ) . .

Arnica fulgens Pursh.  Shining Leopardbane. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb of wetlands, moist, or somehow equible areas, to 35 cm., glandular hairy throughout; Leaves, mostly basal and few cauline, basal, axils with 5 mm. brown wavy hair, petiole 50-70 mm. + blade 60-100 mm. × 12-30 mm. wide, 3.3-5 × longer than wide, lanceolate, tip obtuse, cauline, opposite, sessile, ±2 pair, much reduced; Inflorescence, showy, single heads on peduncle to 80 mm., flowers of two kinds; Involucre, 13-15 mm. × 22-30 mm. wide; Phyllaries, 2 ±equal series, 11-14 mm.× 3-3.5 mm. wide, margins, flat, tips, obtuse green with dark tips glandular-hairy abaxially; Receptacle epaleate; Rays, #12, fertile, tube 3-5 mm. + blade 16-19 mm. × 7-7.5 mm. wide = 19-24 mm., corolla yellow; Disc flowers, tube 7-7.5 mm. + lobes ≤1 mm. = 8-8.5 mm.; Pappus, bristles, 9 mm., white, barbelate; Anther, yellow; Achene, 5 mm., short hairy. Described from Coll. Nos. 1119, 1371, and 1871. Subtribe Arnicinae is a sister subtribe to Madiinae (tarweeds) and Hulseinae, which contains both Hulsea and Eatonella, both common in the Mono Lake basin. Described by Pursh in Fl. Am. Sept. 2: 527 “On the banks of the Missouri,” but this is not a Lewis & Clark collection. Perhaps it is a Nuttall collection from 1810. Holotype: BM?, Isotype: PH.

- Golden, Cobble soil. Flat exposure. Golden. F. A. Branson 4 Jun 1958. ( COLO00857540 ) .

- Lippincott Property, Open prairie in small saddle. Jointly owned by City of Boulder OSMP and Jefferson County Open Space, south of Bull Gulch approximate centroid of parcel, 22.4 km. north northwest of the GNIS location of Golden. Tom Schweich 2038. 26 May 2019. ( CIBO JCOS s.n. KHD REGIS ) With mixed grasses and forbs in a gently sloped, open ponderosa pine woodland. Narrows of the parcel between central and southeast portions, 22 km. north northwest of the GNIS location of Golden. Tom Schweich 2080. 17 Jun 2019. ( CAS CDA CIBO COLO CS OBI UC UCR ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- Ranson/Edwards Homestead Open Space Park, Very wet, running water among grasses and sedges. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 110 m. east of Plainview Road. Tom Schweich 1119. 28 May 2015. ( JCOS s.n. KHD56970 UCR265985 ) Moist east-facing slope with deep grass. High plains above Rocky Flats, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, then 1.4 mi. north on Plainview Road. 15.8 km. north northwest of the GNIS location of Golden. Tom Schweich 1371. 29 May 2016. ( CAS COLO02348472 CS EIU JCOS s.n. KHD00063982 OBI83169 ) .

- Tin Cup Ridge, Amid trees and shrubs, east exposure. Near the top of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden,4.57 km. south southeast of the GNIS location of Golden. Tom Schweich 1871. 23 May 2018. ( CAS CDA JCOS s.n. KHD00069227 UC ) . .

Artemisia campestris L.  Field Sagewort. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 60 cm., longer lived than biennial; Stem, 4± per caudex, reddish; Leaves, basal mostly withered, cauline, 8 mm. × 0.6 mm. wide, narrowly oblanceolate, tomentose; Inflorescence, 130 mm. × 20 mm. wide; Heads, many, 2 mm. × 2 mm. wide; Phyllaries, 2+ series, 1.5 mm. × 1 mm. wide, green to scarious; Receptacle, naked. Described fromColl. No. 1767, 1 Sep 2017. Note: It is important to note presence or absence of a basal rosette when collecting.

- Apex Gulch, Growing unshaded in dry portion of creek, in small clumps. Apex creek, within 1/4 mile of east end of canyon of creek. (immediately west of magic Mt. Amusement park.) 13N 0482132E 4396180N. Ernest H. Brunquist 75. 26 Sep 1959. ( CS23959 KHD7008 ) .

- Golden, United States of America, Colorado, Jefferson Co., Golden N. L. Britton 8 Oct 1882. ( NY1893118 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- Ranson/Edwards Homestead Open Space Park, Rocky alluvial ridge. Somewhat ambiguous as to variety, but most like var. pacifica if infraspecific names are to be applied. High plains above Rocky Flats, 1.7 mi. west on Colorado Highway 72 from Colorado Highway 93, 1.6 mi. north on Plainview Road, then 250 meters southwest on the slope above the road. Tom Schweich 1767. 1 Sep 2017. ( CAS JCOS s.n. KHD00065169 UCR ) . .

Artemisia campestris L. ssp. pacifica (Nutt.) Peck.  Field Sagewort. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 60 cm., longer lived than biennial; Stem, 4± per caudex, reddish; Leaves, basal mostly withered, cauline, 8 mm. × 0.6 mm. wide, narrowly oblanceolate, tomentose; Inflorescence, 130 mm. × 20 mm. wide; Heads, many, 2 mm. × 2 mm. wide; Phyllaries, 2+ series, 1.5 mm. × 1 mm. wide, green to scarious; Receptacle, naked. Described fromColl. No. 1767, 1 Sep 2017. Note: It is important to note presence or absence of a basal rosette when collecting.

- Ranson/Edwards Homestead Open Space Park, Fairly dry, exposed prairie on small ridge between watercourses. Also observed/collected nearby: Toxicodendron rydbergii and Solidago nana. Same as Coll. No. 2207. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.1 mi. north on Plainview Road, then 500 m. west on a small ridge, 19.4 km. north northwest of the GNIS location of Golden. Tom Schweich 2206. 27 Aug 2019. ( JCOS s.n. KHD ) Fairly dry, exposed prairie on small ridge between watercourses. Also observed/collected nearby: Toxicodendron rydbergii and Solidago nana. Same as Coll. No. 2206. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.1 mi. north on Plainview Road, then 620 m. west on a small ridge, 19.4 km. north northwest of the GNIS location of Golden. Tom Schweich 2207. 27 Aug 2019. ( COLO OBI REGIS ) . .

Artemisia dracunculus L.  (Syn: Oligosporus dracunculus (L.) Poljakov ssp. glaucis (Pall. ex Willd.) A. Löve & D. Löve ) Tarragon, Dragon Wort. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, Mixed foothills shrubland, with a few Rocky Mountain junipers, ponderosa pines are a little higher, also collected here: Collinsia parviflora and Andropogon gerardii. Near the top of the initial Rocky Mountain Front Range scarp, southern half of the restricted area, 4.93 km. south of the GNIS location of Golden. Tom Schweich 2386. 17 Jul 2020. ( CDA COLO CS REGIS ) Also seen or collected here: Eriogonum effusum, Ericameria nauseosa var. graveolens, Senecio spartioides (in bud, no flowers), Solidago missouriensis, and Xanthisma spinulosum. East-central corner of park where multiple unnamed gulches join before flowing through Stonebridge HOA, small ridge between gulches, 4.47 km. south of the GNIS location of Golden. Tom Schweich 2431.2 19 Aug 2020. ( JCOS s.n. KHD ) .

- North Table Mountain, Zeise, Larry Steven, 1976 Uppermost southwest slopes of North Table Mountain, just below the basalt flow capping the mesa, 1.7 km. north of the GNIS location of Golden. Tom Schweich 1554. 1 Sep 2016. ( EIU JCOS s.n. KHD00063997 OBI83374 UC ) .

- North Washington Open Space, Eastern slope adjacent to social trail over the top of the hill. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1754. 31 Aug 2017. ( KHD00065159 UCR289253 ) .

- South Table Mountain, A lava capped mesa in the Denver formation. Occasional with mixed vegetation including Chrysothamnus nauseosus, C. nauseosus ssp. graveolens, Asclepias pumilis, Adenolinum lewisii. Front Range, South Table Mt, Meadow W of Quaker Road and S of Hill 60220. 13N 0483972E 4398546N. Loraine Yeatts 2224. 26 Sep 1989. ( COLO00112136 KHD27209 ) . .

Artemisia filifolia Torr.  (Syn: Oligosporus filifolius (Torrey) Poljakov ) CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, Zeise, Larry Steven, 1976 . .

Artemisia frigida Willd.  Prairie Sagewort. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 30 cm., woody at base; Stems many; Leaves alternate, 9 mm., pinnately dissected into 7 parts, silvery hairy; Inflorescence raceme-like, indeterminate, heads 1-3 in axils; Heads have only disk flowers, all alike; Involucre of hairy phyllaries; Phyllaries in 2 series, hairy, not gummy or with tips recurved; Receptacle hairy, not chaffy or bristly; Flowers fertile; Pappus absent; (Described from Coll. No. 1067, 8 Oct 2014).

- Apex Gulch, infrequent along gravelly and rocky trail path Apex trail (N of Heritage Square) 20 ft. W of concrete walkway. T4S R70W S9. E Rangel 17. 21 Sep 2002. ( CS84042 ) .

- Golden, common on mtn slopes near Denver, especially near Golden. Time of pollination -- July-September; hay fever reaction--positive, Donor: JJWaring Collection. Golden, mountain slopes, especially near Golden. 13 0480565E 4400448N. Maxy Pope 19 Jul 1924. ( KHD6985 ) United States of America, Colorado, Jefferson Co., Golden N. L. Britton 8 Oct 1882. ( NY1894491 ) .

- Heritage Square, open ground ca 2 1/2 mi S of Golden. T R70W S10. Ernest H. Brunquist 53. 10 Sep 1959. ( CS37477 ) .

- Magic Mountain, Tom Schweich 4/18/2018. .

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Rocky slope with little soil development near rim of mesa, growing with Brickellia. Near the south rim of North Table Mountain, accessed by way of the Golden Cliffs Trail, 1.5 km north northeast of the GNIS location of Golden. Tom Schweich 1067. 9 Oct 2014. ( CAS UC2045775 UCR266094 ) .

- North Washington Open Space, Tom Schweich 5/2/2017. .

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 8/28/2015. .

- South Table Mountain, Extremely common on S facing slope below mesa edge in lava clay soil. South Table Mountain. 13N 0484199E 4399201N. Loraine Yeatts 675. 11 Jul 1983. ( BRY215667 COLO00043281 KHD19335 ) . .

Artemisia ludoviciana Nutt.  Silver Wormwood. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Gulch, Growing on the bank and close to the creek. Growing on the bank and close to Apex Creek, within the first 1/4 mile of the east end of the canyon of the Creek; and within 1/2 mile of the archeological project of Peabody Museum, and west by southwest of it. 13N 0481593E 4395771N; TRS: T4S R70W sec 10 Ernest H. Brunquist 76. 26 Sep 1959. ( KHD40659 KHD7002 ) .

- Golden, United States of America, Colorado, Golden N. L. Britton 8 Oct 1882. ( NY158512 ) .

- Golden Reservoir, SE-facing slope, sandy soil. Lariat Loop Rd., 1 mi. NW of I-70, 1/4 mi. SW of Golden Reservoir, SW of Golden. T4S R70W S5. J Hutchison 19. 1 Sep 1996. ( CS82046 ) .

- Heritage Square, near the base of east-facing hillside; unshaded about 3/4ths mi. west and a little south of the archeological site of Peabody Museum. 13N 0481541E 4396050N. Ernest H. Brunquist 30. 20 Aug 1959. ( CS23916 KHD6998 ) .

- Magic Mountain, Tom Schweich 4/18/2018. .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Zeise, Larry Steven, 1976 .

- North Washington Open Space, Tom Schweich 3/27/2017. Var. ludoviciana if infraspecific names are to be applied. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1753. 31 Aug 2017. ( CS KHD00065158 ) .

- Ranson/Edwards Homestead Open Space Park, In a grassy low spot away from established drainage. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, then 535 m. west of Plainview Road. Tom Schweich 1281. 28 Aug 2015. ( CAS EIU JCOS s.n. KHD00062048 OBI83256 UC UCR267478 ) .

- South Table Mountain, In occasional patches along hardpacked clay road South Table Mountain, along road to castle rock. 13N 0482899E 4400495N. Loraine Yeatts 811. 20 Aug 1983. ( COLO00045195 KHD19336 ) . .

Bahia dissecta (A. Gray) Britton.  (Syn: Amauriopsis dissecta (A. Gray) Rydberg ) Raglead Bahia. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Wet, gravelly areas. Golden: US Hwy 6 at crossing of Clear Creek. Ronald C. Wittmann, with Judy Wittman 1881. 13 Sep 1981. ( COLO00049536 RM358663 ) . .

Balsamorhiza sagittata (Pursh) Nutt.  Arrow-Leaf Balsamroot. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 50 cm.; Leaves, mostly basal, 20 cm. × 12 cm, widely triangular, base sagittate, tomentose, cauline much reduced; Inflorescence, solitary heads on 40 cm. scape, radiate, composed of 2 kinds of flowers, some strap-shaped; Phyllaries, in 2+ series, not all subtending ray flowers, eglandular, outer lance-linear, 18 mm. × 4 mm. wide, veins, 5, prominent, base to full length tomentose abaxially, adaxially distally, inner obovate, 11 mm. × 4 mm. wide, distal abaxial tomentose and ciliate; Receptacle, paleate; Paleae, 11 mm × 3 mm. wide, ciliate, and distal abaxial tomentose, palea covers all abaxial side of disc flower ovary, and is barely folded around one edge, not fully enclosing ovary; Pappus 0; Ray flower, fertile, stamens present but degenerate (?) and not functional (?), corolla, tube 2 mm. + blade 27-32 mm. × 11-12 mm. wide, yellow; Disc flowers, bisexual, corolla, 6 mm., yellow; Achene, 9 mm., compressed radially. Described from Coll. No. 956, 22 May 2013 (Mono County, CA) and Coll. No. 1109, 14 May 2015 (Jefferson County, CO).

- Tin Cup Ridge, Tom Schweich 6/30/2019. East across US Highway 40 from the Peabody Museum dig at Magic Mountain, which was extensively collected by E. H. Brunquist (1959). In grasses and shrubs high on the east side of Tin Cup Ridge, a northward extension of Dakota Ridge into Golden, 4.9 km south southeast of the GNIS location of Golden. Tom Schweich 1109. 14 May 2015. ( CAS KHD56904 OBI82132 UC UCR266092 ) Usually described as a western slope plant. Perhaps planted here. Regardless, it is naturalized and spreading, if not native. Lower slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, a hogback at the base of the Rocky Mountain Front Range, 6.63 km. south of the GNIS location of Golden. Tom Schweich 2252. 30 Apr 2020. ( CDA COLO CS JCOS s.n. REGIS ) . .

Bidens frondosa L.  Devil's Beggartick. CalPhotos. Jepson eFlora. SEINet Taxon.

Herbs, 18-28 cm.; Leaves, basal, unknown, cauline, opposite, 50 mm. × 40 mm. wide, pinnately compound, leaflets, #3, 25 mm. × 12 mm. wide, margin, serrate; Inflorescence, head enclosed in an involucre, 5-6 mm. wide; Phyllaries, outer, #5, 12 mm. × 2 mm. wide, green, inner, many, 5.5 mm. × 2.5 mm. wide, brown, margin, scarious (similar to the paleae); Receptacle, paleate; Paleae, 5 mm. × 1.7 mm. wide, margin, scarious; Corolla, 1.5 mm., orange-yellow; Pappus, #2, barbed awns, 1.5 mm.; Achene, 2-5-2.8 mm. × 1.5 mm. wide, very flat, hairy (Described from Coll. No. 2202, 27 August 2019).

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 19.4 km. north northwest of the GNIS location of Golden, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. north on Plainview Road, then 290 m. west to a small reservoir. Tom Schweich 2202. 27 Aug 2019. ( JCOS s.n. KHD OBI ) Edge of an ephemeral stream, with Heliomeris multiflora, Lsyimachia ciliata, Mentha arvensis, and Lycopus americanus. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.1 mi. north on Plainview Road, then 725 m. west to an ephemeral stream, 19.7 km. north northwest of the GNIS location of Golden. Tom Schweich 2210.1 27 Aug 2019. ( CAS UCR ) . .

Brickellia Elliott.  Brickel Bush. CalPhotos. Jepson eFlora. SEINet Taxon.

- Magic Mountain, Tom Schweich 4/18/2018. . .

Brickellia californica (Torrey & A. Gray) A. Gray.  California Brickelbush. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Tom Schweich 7/30/2015. Growing in cracks of cliffs and talus just below cliffs. Tom Schweich 10/12/2015. Near top of south side of North Table Mountain, at the base of the lower set of basalt cliffs, 220 m. north of the Golden Cliffs trailhead, 1.5 km. north northeast of the GNIS location of Golden. Tom Schweich 1546. 1 Sep 2016. ( COLO02348654 EIU JCOS s.n. KHD00063965 OBI83343 UC ) .

- South Table Mountain, in pit of disturbed area of lava gravel; little other vegetation. USA, Colorado, Jefferson County, S. Table Mt. 13N 0484200E 4499700N Loraine Yeatts 832. 9 Sep 1983. ( COLO00051870 KHD19329 ) Top of Castle Rock. Tom Schweich 10/19/2019. . .

Brickellia eupatorioides (L.) Shinners.  False Boneset. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 40 cm.; Leaves, alternate, short-petioled (2 mm.), 48 mm. × 7 mm. wide, lanceolate, tip obtuse, margin entire, glandular-punctate, sparsely strigose; Inflorescence, corymbiform, heads in groups of 4-5; Involucre, 8.5 mm. × 6 mm. wide; Phyllaries, 3+ series, graduated, 2-8.5 mm. × 0.5 mm. wide, prominently veined “longitudinally striate,” margin scarious, tip acuminate to spinulose; Receptacle, epaleate; Disk flowers, #19, corolla, 7 mm., yellow; Pappus, plumose bristles, 6 mm.; Cypsela, many ribs (maybe 10). (Described from Coll. No. 1553, 1 Sep 2016.)

- Golden, Dry rolling plains. J. H. Ehlers 8347. 25 Sep 1941. ( COLO 00052324 ) Plains east of Golden. J. H. Ehlers 8540. 23 Sep 1942. ( COLO00053371 ) .

- North Table Mountain, as B. rosmarinifolius (sic) Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Common in bed of ephemeral stream, in an upper portion of a watercourse draining southeast to Clear Creek through an unamed canyon. Many Eriogonum alatum at this location. Top of North Table Mountain, adjacent to the North Table Loop, 285 m. north of the USBR monument designated “North Table,” 1.8 km. north of the GNIS location of Golden. Tom Schweich 1553. 1 Sep 2016. ( JCOS s.n. KHD00063999 ) .

- North Washington Open Space, On a bank that was formerly cut, unknown whether it was intentionally regevetated or not. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1758. 31 Aug 2017. ( CAS KHD00065163 UCR ) .

- South Table Mountain, South Table Mountain near Golden. 13N 0483016E 4400491N. Berta Anderson, with Loraine Yeatts 1946. 25 Sep 1984. ( KHD24159 ) Sloping E facing roadcut. S Table Mt. Loraine Yeatts 817. 29 Aug 1983. ( CS79096 KHD7805 ) A lava capped mesa in the Denver Formation; growing with Kuhnia rosmarinifolia which is much more common. USA, Colorado, Jefferson County, S. Table Mt.; at edge of mesatop rd. N. of Quaker Rd. gate . Loraine Yeatts 1095. 18 Sep 1984. ( COLO00052209 KHD20720 ) South Table Mesa near Golden. 13N 0483016E 4400491N. Loraine Yeatts, with Berta Anderson? 1945. 24 Sep 1984. ( KHD24158 ) . .

Brickellia grandiflora (Hook.) Nutt.  Tasselflower Brickellbush. CalPhotos. Jepson eFlora. SEINet Taxon.

- Heritage Square, In partial shade and very rocky soil. South Bank of Apex Creek, W by SW of archeological project of peabody musuem, (Harvard U) and W of Magic Mtn Amusement park. 13N 0481717E 4395926N. Ernest H. Brunquist, with Dolores Newton 130. 4 Aug 1960. ( CS37820 KHD9681 ) . .

Carduus nutans L.  (Syn: Carduus nutans L. ssp. macrolepis (Peterman) Kazmi ) Nodding Plumeless Thistle. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, to 55 cm., tap-rooted, branched at base; Leaves, basal, withered at flowering, cauline, alternate, decurrent 40 mm. + blade 75 mm. × 25 mm. wide, pinnately lobed, margins spiny; Inflorescence, single heads on spiny tomentose peduncles 2.5-15 cm.; Phyllaries, many graduated series, 9-20 mm. × 1-3 mm. wide, thick at base, mostly green, purplish at margins, mid-vein prominent, tip spiny; Receptacle, alveolate (honeycombed), flat, bristly; Disk flowers, 25 mm., color purple; Pappus, capillary bristles, 18 mm. (Described from Coll. No. 1517, 24 July 2016.)

- Kinney Run, West slope of the hogback on the east side of Kinney Run, between the Cambria Lime Kiln and Tripp Ranch, 3.22 km. south southeast of the GNIS location of Golden. Tom Schweich 1968. 6 Jul 2018. ( COLO02348563 KHD00069210 OBI170768 UC ) .

- Lippincott Property, One rosette seen. Tom Schweich, with Irene Weber 4/24/2019. .

- North Table Mountain, as ssp. macrolepis Kilburn, Paul D., and Sally L. White, 1992 .

- North Washington Open Space, Determination tentative. Tom Schweich 3/27/2017. Colorado Noxious Weed List B. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue. Southwestern slope, probably in the revegetated zone. Tom Schweich 1711. 14 Jul 2017. ( KHD00065333 UCR ) .

- Ranson/Edwards Homestead Open Space Park, Northwest-facing slope above ephemeral stream. Introduced. Colorado Noxious Weed List B. Northern part of open space, 1.6 mi. west on CO Highway 72 from CO Highway 93, north 1.9 mi. on Plainview Road, then 560 m. downhill to northeast; 16.3 km. north northwest of the GNIS location of Golden. Tom Schweich 1517. 24 Jul 2016. ( EIU JCOS s.n. KHD00063455 OBI83332 ) .

- South Table Mountain, S. Table Mountain, locally abundant at base of seeping lava cliff. 13N 0483373E 4399567N. Loraine Yeatts 645. 3 Jul 1983. ( COLO00053728 KHD19330 ) .

- Tin Cup Ridge, Tom Schweich 6/30/2019. . .

Carthamus lanatus L.  Wooly Distaff Thistle. Weed: CO DofA, List: Watch. CalPhotos. Jepson eFlora. SEINet Taxon.

- South Table Mountain, occasional on dry hillside w/ Snakeweed, Bush Sunflower and Artemesia ludoviciana. Suth Table Mtn on unmarked, unnamed trail accessed from 19th St in City of Golden to base of mtn. Collection site located about 100 yds from tralhead. NAD27. 13 0482145E 4399989N. Stanley Smookler 504. 4 Aug 2009. ( KHD46919 ) . .

Centaurea diffusa Lam.  (Syn: Acosta diffusa (Lam.) Soja' k ) White Knapweed. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.

Biennial/Perennial herb, to 50 cm.; Leaves, cauline, alternate, 30 mm. × 12 mm. wide, pinnately lobed, much reduced and entire above, spine-tipped, margins not spiny; Inflorescence, heads borne singly, flowers of one kind; Involucre, 10 mm.; Phyllaries, 4+ series, graduated, 3.5-10.0 mm., all spine tipped, outer and middle with marginal fringe spines; Receptacle, flat, epaleate, bristly; Disk flowers, inner bisexual, Corolla, tube 7.5 mm. + lobes 3 mm., white; Pappus, 0, or very thin ring of scales. Described from Coll. No. 1233, 20 Jul 2015.

- Magic Mountain, Tom Schweich 4/18/2018. .

- North Table Mountain Park, Colorado Noxious Weed List B species. Northern portion of North Table Mountain, 205 m east of radio tower, 3.3 km north northeast of the GNIS location of Golden. Tom Schweich 1233. 20 Jul 2015. ( CDA JCOS s.n. KHD 00062051 UC UCR267458 ) .

- North Washington Open Space, Tom Schweich 5/2/2017. .

- Ranson/Edwards Homestead Open Space Park, Large patch, determination tentative. Tom Schweich 7/26/2015. .

- South Table Mountain, On N. side of road with Phlox hoodii, P. longifolia, Castilleja chromosa, Alyssum desertorum, Cympoteris bulbosus, C, purpurescens, Lomatium grayi, Atriplex confertifolia, Trifolium gymnocarpum, Seriphidium vaseyanum, scattered Juniperus osteosperma S. Table Mt.; on mesatop near old road. 13N 0484100E 4399700N. Loraine Yeatts 801. 20 Aug 1983. ( COLO 00026658 KHD19331 ) . [ Both KHD vouchers of this collection carry the same herbarium ascension number. ] .

Centaurea stoebe L.  (Syn: Acosta maculosa (L.) Holub , Centaurea maculosa Lam. , Centaurea stoebe L. ssp. australis (Pancic ex A.Kern.) Greuter , Centaurea stoebe L. ssp. micranthos (Gugler) Hayek ) Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.

- Mount Vernon Canyon, Roadbank. from roadbank of I-70 near Exit 58. 13N 0480398E 4394141N. Berta Anderson 961. 18 Aug 1977. ( KHD23730A KHD23730B KHD23730C ) . [ 2.5 ft. tall, many branched--8 ex caudex; receptacle hairy, involucre trubinate, only 5mm. wide 1 cm. high--achenes unflattened and fastened at end--two rows phyllaries, inner long, equal, with chartaceous edges; outer imbricated & fringed; big, woody ta ] .

Cichorium intybus L.  Chicory. Weed: CO DofA, List: C. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, Zeise, Larry Steven, 1976 . .

Cichorium intybus L.  Common Chicory. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 70 m. west of Plainview Road. Tom Schweich 1223. 16 Jul 2015. ( JCOS s.n. KHD00062054 UC ) . .

Cirsium arvense (L.) Scop.  (Syn: Breea arvensis (L.) Lessing ) Canada Thistle. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, to 70 cm., tap-rooted; Leaves, cauline, alternate, sessile but not obviously decurrent, 85 mm. × 20 mm. wide, margin sinuate, spiny, adaxial thinly tomentose, abaxial tomentose; Inflorescence, panicle(?); Heads, many, 30±, 15 mm. × 8 mm. dia., disk flowers only, dioecious, staminate heads, pappus < corolla, pistillate heads, pappus > corolla; Phyllaries, many (6-7) series, outer 3 mm. × 1.5 mm. wide, inner 15 mm. × 1 mm. wide, dark dorsal ridge, tips, spinulose, reflexed; Receptacle, soft bristles, 10 mm.; Pappus, plumose bristles (Described from Coll. No. 1512, 24 July 2016).

- Colorado School of Mines Survey Field, Northern portion of the Survey Field, 2.1 km south southwest of the GNIS location of Golden. Tom Schweich 1200. 12 Jul 2015. ( CS KHD00062053 UC ) .

- Deadman Gulch, South side of gulch, growing in woody shrubs. Also collected here: Epilobium hirsutum, Solanum dulcamara, and Dactylis glomerata. Near the junction of Deadman Gulch and Kinney Run, 2.28 km. south of the GNIS location of Golden Tom Schweich 2407. 31 Jul 2020. ( COLO OBI REGIS ) .

- North Washington Open Space, East end of parcel amid a dense infestation of smooth brome. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1701. 14 Jul 2017. ( KHD00065460 UCR ) .

- Ranson/Edwards Homestead Open Space Park, Small colony, approx. 4 m. dia. Tom Schweich 6/23/2020. Small colony, approx. 3 m. dia. Tom Schweich 6/23/2020. Mixed grasses and forbs, just below the ponderosa pine zone. Lightly grazed in 2016. Colorado Noxious Weed List B. Northern part of open space, 1.6 mi. west on CO Highway 72 from CO Highway 93, north 1.9 mi. on Plainview Road, then 80 m. northwest; 16.3 km. north northwest of the GNIS location of Golden. Tom Schweich 1512. 24 Jul 2016. ( CDA EIU JCOS s.n. KHD00063469 ) High plains above Rocky Flats, 1.7 miles west on CO Highway 72 from CO Highway 93, 1.4 miles north on Plainview Road, then 450 meters east northeast to the original homestead location. Tom Schweich 1685. 28 Jun 2017. ( JCOS s.n. KHD00065409 ) .

- South Table Mountain, in boggy seepage area at head of gentle gully. S. Table Mt. 13N 0484100E 4399300N. Loraine Yeatts 708. 16 Jul 1983. ( COLO00051771 KHD19333 ) . .

Cirsium ochrocentrum A. Gray.  Yellowspine Thistle. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Golden. Railroad track. Edmund R. Cross 20 Jul 1913. ( RM313305 ) . .

Cirsium undulatum (Nutt.) Spreng.  Wavy Leaved Thistle. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial thistle, to 30 cm., stout tap root; Stem, leafy, 20 cm.; Leaves, basal and cauline, basal, petiole 25 mm. + blade 180 mm. × 55 mm. wide, oblanceolate, pinnately lobed more than half-way to mid-rib, cauline, reduced above, decurrent 5 mm., 45 mm. × 14 mm. wide, lanceolate, surface, adaxial, thinly tomentose, abaxial, tomentose, margins, spiny; Head, 35 mm. × 40 mm. wide, indented around top of peduncle; Phyllaries, many (7?) series, 13 mm. × 3.5 mm. wide, + robust spine 5-6 mm., body dark dorsal ridge, outer and middle reflexed; Flowers, 1 kind; Disk flowers, 25-36 mm., corolla pink-purple; Pappus, plumose bristles; Cypsela, 5 mm., apical collar unremarkable. (Described from Coll. No. 1460, 27 June 2016).

- Colorado School of Mines Survey Field, Northeast-facing gentle slope in foothills grassland, also collected or seen nearby: Opuntia macrorhiza, Hymenopappus filifolius, Aegilops cylindrica, and Poa bulbosa. The common native thistle in Jefferson County, Colorado. Southern part of the Survey Field, high plains at the base of the Rocky Mountain Front Range, 3.15 km. south of the GNIS location of Golden. Tom Schweich 2370. 20 Jun 2020. ( KHD OBI UCR ) .

- Golden, Railroad track. Edmund R. Cross 20 Jul 1913. ( RM313306 ) .

- Heritage Square, unshaded in medium tall grass, on a gentle, south-facing slope; rocky, well-drained soil. about 125 yds east of the archeological project of the Peabody Museum (Harvard Univ.) 13N 0481541E 4396050N. Ernest H. Brunquist 123. 28 Jul 1960. ( CS38722 KHD498 ) . [ CS38722 is determined C. ochrocentrum ]

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- North Washington Open Space, in mowed area Tom Schweich 5/2/2017. .

- Ranson/Edwards Homestead Open Space Park, Mixed grasses and forbs on a dry alluvial terrace. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.3 mi. north on Plainview Road, then 195 m. east along the north side of an ephemeral stream; 15.2 km. north northwest of the GNIS location of Golden. Tom Schweich 1460. 27 Jun 2016. ( EIU JCOS s.n. KHD00063456 ) Scattered on a terrace above ephemeral stream. High plains above Rocky Flats, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.2 mi. generally north on Plainview Road, then 450 m. east along the north side of an ephemeral stream, 19.9 km. north northwest of the GNIS location of Golden. Tom Schweich 2377. 23 Jun 2020. ( CAS CDA COLO UC ) .

- South Table Mountain, S. facing mesa top slope. S. Table Mt.; near summit of S. facing mesatop slope Loraine Yeatts 646. 3 Jul 1983. ( KHD19320 KHD19321 ) . .

Conyza canadensis (L.) Cronquist.  (Syn: Erigeron canadensis (L.) Cronquist ) Canadian Horseweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, disturbed ground Golden, 800 9th St. 13N 0481011E 4399988N (UTM designated just outside RMNP boundary & within Roosevelt National Forest). Jim Ratzloff 21 Jul 1976. ( KHD9883 ) .

- Heritage Square, open ground ca 2 1/2 mi S of Golden. T R70W S10. Ernest H. Brunquist 8. 14 Aug 1959. ( CS23863 ) growing unshaded in undisturbed ground. about 75 yds. east of the archeological project of Peabody Museum (Harvard Univ.) 13N 0481541E 4396050N. Ernest H. Brunquist 120. 28 Jul 1960. ( KHD487 KHD742 ) .

- South Table Mountain, along road to quarry near mesatop S. Table Mt. 13N 0484260RE 4399600N; Loraine Yeatts 775. 9 Aug 1983. ( COLO00062232 KHD19158 ) . .

Coreopsis tinctoria Nutt.  Golden Tickseed. CalPhotos. Jepson eFlora. SEINet Taxon.

- South Table Mountain, lava capped mesa in Denver Formation. Roadside at Quaker Rd. gate, S Table Mt. 13N 0482564E 4400611N. Loraine Yeatts 944. 4 Jul 1984. ( CS79394 KHD20384 ) In dried clayey mud of small depression bounded by mesatop grassland; w/ Critesion jubatum, Alyssum parviflorum, Artemisia ludoviciana, Anisantha tectorum ...; a few plants locally & occasional in similar habitats. Middle lava flow of Tertiary Table Mt. shoshonite, in Denver Formation. South Table Mt., NREL property on S. side of mesatop. middle lava flow of Tertiary Table Mt. shoshonite, in Denver Formation. UTM: 12N0484762E 4899105N Loraine Yeatts, with Maureen O'Shea-Stone 4605. 25 Jun 2001. ( COLO00568923 ) . .

Crepis L.  Hawksbeard. CalPhotos. Jepson eFlora. SEINet Taxon.

- Little Scraggy Peak, Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 2.04 km. southwest of the Little Scraggy trailhead, 61.2 km. south of the GNIS location of Golden. Tom Schweich 2243. 16 Sep 2019. ( Golden ) . .

Crepis atribarba A. Heller.  CalPhotos. Jepson eFlora. SEINet Taxon.

- Mount Falcon Park, Edge of bike and hiking trail bounded by Cercocarpus montanus shrub community; in hardpacked gritty soil with Adenolinum lewisii and grasses Precambrian shist and gneiss. Ca 40 plants locally, but only place seen along trail USA, Colorado, Jefferson County, Mt. Falcon Open Space Park S of Morrison. Loraine Yeatts 5487. 2 Jun 2007. ( KHD43617 ) . .

Crepis occidentalis Nutt.  (Syn: Psilochenia occidentalis (Nutt.) Nutt. ) Largeflower Hawksbeard. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, herb, to 25 cm., taprooted; Stem, green, tomentose, glandular, no bristles; Leaves, basal and cauline, alternate, petiole 20 mm. + blade 56 mm. × 17 mm. wide, reduced distally, pinnately lobed nearly to mid-rib, segments deltoid, tomentose, glandular; Inflorescence, heads #3 per stem, showy, >leaves; Peduncles, 23 mm.; Involucre, 12 mm. × 12 mm. wide, cyindric, tomentose; Phyllaries, 2 graduated series, 3.5 mm. &tmes; 2 mm. wide, deltoid, 12.5 mm. × 3 mm. wide, lanceolate, ±flat, tomentose, gland-tipped black bristles evenly distributed; Receptacle, epaleate; Ray flowers (ligules), many, tube 6 mm. + blade 12.5 mm. × 2.4 mm. wide, yellow; Pappus, 9 mm. well-developed, bristles, ±equal, smooth; Fruit, 2 mm. × 1.3 mm. wide, brown, glabrous. (Described from Coll. No. 1894, 28 May 2018).

- Colorado School of Mines Survey Field, Chicorieae, phyllaries grayish, glandular. Subspecies costata if infraspecific names are to be applied. Highest Great Plains at the base of the Rocky Mountain Front Range, southeast-facing slope, above an unnamed stream in the south end of the Survey Field, 2.36 km. south of the GNIS location of Golden. Tom Schweich 1894. 28 May 2018. ( KHD00069231 OBI147777 ) .

- Golden, Dry hills. Ellsworth Bethel, with I. W. Clokey 4413. 9 Jun 1921. ( COLO00122291 RM90092 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- South Table Mountain, On steep bank along road. Intermountain park; sagebrush and open lodgepole pine forest. S. Table Mt. along Quaker Rd. just past Golden Hills Rd. 13N 0484200E 4398800N. Loraine Yeatts 576. 16 Jun 1983. ( COLO00122267 KHD19321 ) . .

Cyclachaena xanthiifolia (Nutt.) Fresen.  (Syn: Iva xanthiifolia Nutt. ) Carelessweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Deadman Gulch, Also seen around the edge of the pond and along the Kinney Run Trail nearly to Eagle Ridge Drive. The pond and dam were reconstructed in late 2016 so these would have established here since then. Along Deadman Gulch (Kinney Run), between US Highway 6 and Eagle Ridge Drive, collected at the edge of the concrete of the retention pond dam, 3.18 km. south of the GNIS location of Golden. Tom Schweich 2423. 17 Aug 2020. ( COLO KHD OBI ) .

- Golden, Garden weed. Golden Tom Fennell 19 Aug 1975. ( COLO00857946 ) .

- Heritage Square, Open ground. 2.5 mi S of Golden. T R70W S10. H. Harrington 43. 24 Aug 1959. ( CS23860 ) .

- South Table Mountain, South Table Mountain; on both sides of Quaker Rd. above Golden Hills Rd. 13N 0484300E 4399100N. Loraine Yeatts 815. 29 Aug 1983. ( COLO00062828 KHD19407 ) . .

Dieteria bigelovii (A. Gray) D. R. Morgan & R. L. Hartman.  (Syn: Machaeranthera b. (A. Gray) Greene ) Bigelow's Tansy Aster. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 60 cm.; Stem erect, stipitate-glandular, more dense above; Leaves, basal, unknown, cauline, alternate, sessile, 50 mm. × 4-5 mm. wide, reduced above, lance-linear, spinulose toothed; Inflorescence, panicle, heads borne singly on pedicels 10-20 mm.; Involucre, 8 mm. × 12 mm. wide; Phyllaries, 5+ series, imbricate, chartaceous below, green and stipitate-glandular above, tips, acuminate, reflexed; Receptacle, epaleate; Flowers of 2 kinds; Rays, fertile, corolla, tube 4.5 mm. + laminae 10 mm. × 1.5 mm. wide, spatulate, blue; Disk flowers, corolla, 6 mm., yellow; Pappus, capillary bristles, 6 mm.; Cypsela, 3 mm., hairy. Described from Coll. No. 1299, 23 Sep 2015.

- Apex Gulch, Dry creek bed. Bed of Apex Creek, about 1 mile west by southwest of the archeological project of the Peabody Museum. 13N 0480091E 4395882N. Ernest H. Brunquist, with Dolores Newton 133. 4 Aug 1960. ( KHD8167 ) .

- Golden, Highplains, Golden, Jefferson Co. Lois S. Ehlers, with J. H. Ehlers 778. 16 Sep 1922. ( EMC2276 ) . [ Determined Machaeranthera varians Greene. ]

- Little Scraggy Peak, Variety bigelovii if infraspecific names are to be applied. Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation. Same as Coll. No. 2239. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 1.47 km. southwest of the Little Scraggy trailhead, 60 km. south of the GNIS location of Golden. Tom Schweich 2234. 16 Sep 2019. ( OBI ) Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation. Same as Coll. No. 2234. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 2.04 km. southwest of the Little Scraggy trailhead, 61.2 km. south of the GNIS location of Golden. Tom Schweich 2239. 16 Sep 2019. ( CAS CDA KHD UCR ) .

- Ranson/Edwards Homestead Open Space Park, Resprouting laterally after having been eaten. Bank below Plainview Road, 1.7 mi. west on CO Highway 72 Coal Creek Canyon Road from CO Highway 93, 1.8 mi. north on Plainview Road; 16.0 km. north northwest of the GNIS location of Golden. Tom Schweich 1565. 28 Sep 2016. ( JCOS s.n. KHD00066686 ) .

- South Table Mountain, South Table Mountain; Along road to Castle Rock on mesa top. 13N 0482700E 4400400N. Loraine Yeatts 844. 13 Sep 1983. ( BRY264970 COLO00106120 KHD19402 ) . [ BRYV264970 is annotated "Machaeranthera canescens var. glabra, > var canescens, B. L. Turner 1986." ]

- Tin Cup Ridge, Among rocks along the top of Tin Cup Ridge, the northern extension of Dakota Ridge into Golden, 4.7 km south southeast of the GNIS location of Golden. Tom Schweich 1299. 23 Sep 2015. ( JCOS s.n. KHD00061539 UC UCR267492 ) . .

Dieteria canescens (Pursh) Nutt.  (Syn: Machaeranthera c. (Pursh) A. Gray ) Hoary Tansyaster. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Golden. 13N 0481266E 4400112N. Ellsworth Bethel 365. 14 Oct 1916. ( KHD10014 ) United States, Colorado, Jefferson County, Golden, off Highway 6. Sherman Lambert 73. 24 Jun 1978. ( UTEP13411 UTEP13412 UTEP13413 ) United States, Colorado, Jefferson, Golden W. W. Calkins ? 874. 20 Sep 1878. ( BDI ) . .

Dyssodia papposa (Vent.) Hitchc.  Fetid Marigold. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, to 15 cm., tap-rooted, most surfaces with scattered 0.4 mm. elliptical brown oil glands; Leaves, cauline, 28 mm. × 12 mm. wide, reduced above, pinnafitid, ±sessile; Heads, borne singly on leafy stems; Phyllaries, 2+ graduated series, 3 mm. × 1 mm. wide, lanceolate, to 6 mm. × 2.7 mm. wide, elliptic, 5-9 brown oil glands; Receptacle, epaleate; Flowers, 1 kind; Disk flowers, 2.8 mm., yellow; Pappus, scales, dissected to appear to be bristles, 3 mm.; Cypsela, 4 mm., black. (Described from Coll. No. 1540, 18 August 2016.)

- North Table Mountain Park, On edge of private horse pasture. Lower north slopes of North Table Mountain, on North Table Loop trail, at the fenceline of the Williams parcel, 0.88 km. southeast of the Mesa Spur trailhead on W. 58th Avenue, 4.7 km. north northeast of the GNIS location of Golden. Tom Schweich 1540. 16 Aug 2016. ( KHD00065750 ) .

- South Table Mountain, along road Collection by Environmental Science & Engineering, Englewood, Colorado, S. Table Mountain, along road near S rim of mountain. 13N 0483567E 4400080N. Janet L. Wingate 2735. 30 Aug 1983. ( KHD22199 ) overgrown road up gentle south facing slope. South Table Mountain; in center of overgrown road up gentle south facing slope near mesa top. 13N 0484100E 4399700N. Loraine Yeatts 819. 29 Aug 1983. ( COLO00063586 KHD19322 ) . .

Ericameria nauseosa (Pall. ex Pursh) G. I. Nesom & G. I. Baird.  (Syn: Chrysocoma nauseosa Pall. Ex Pursh , Chrysothamnus nauseosus (Pall.ex Pursh) Britton ) Rubber Rabbitbush. CalPhotos. Jepson eFlora. SEINet Taxon.

- Clear Creek Canyon, Roadside embankment; dry, sandy soil. Donor: Herbarium, University of Colorado, Denver Center. Intersection of Hwy. 58 and Hwy.6, Golden. 13N 0479597E 4400445N. Dave Wager 21. 23 Sep 1977. ( KHD40952 ) .

- Golden, North face of roadside embankment. Donor: Herbarium, University of Colorado, Denver Center. Hwy 58 west of intersection with Hwy 6. 13N 0479210E 4399704N. Gary Secora 14. 20 Sep 1977. ( KHD40954 ) Roadside growing along roadside at junction of Highway 6 and Highway 58 west of Golden. 13N 0479795E 4400376N. Janet L. Wingate 1186. 12 Sep 1981. ( KHD170 ) .

- North Table Mountain, as Chrysothamnus n. Kilburn, Paul D., and Sally L. White, 1992 as Chrysothamnus n. Zeise, Larry Steven, 1976 . .

Ericameria nauseosa (Pall. ex Pursh) G.L.Nesom & G.I.Baird var. graveolens (Nutt.) Reveal & Schuyler.  (Syn: Chrysocoma dracunculoides Pursh [misapplied] , Chrysocoma graveolens Nutt. , Chrysothamnus graveolens (Nutt.) Greene , Chrysothamnus nauseosus (Pall.) Britton ssp. graveolens (Nutt.) Piper , E. n. (Pall. ex Pursh) G.L.Nesom & G.I.Baird var. glabrata (Gray) G.L. Nesom & Baird ) CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial shrub, woody at base, to 1 m., sprawling to erect; Stem covered with felt-like tomentum (long hairs infiltrated with resin, must scrape with knife to expose); Leaves, alternate, lance-linear, 70 mm. × 3 mm., not twisted in the manner of some related species, upper surface tomentose, margin entire; Heads discoid (with only disk flowers), cymose at ends of branches, narrowly tubular; Involucre 8 mm., not spiny; Phyllaries in 3 vertical ranks, outer << inner, keeled, some with few short hairs; Receptacles not chaffy, but have some short (<0.5 mm.) appendages between flowers; Flowers #5; Corolla tube (i.e., petals united at base) 7.5 mm. + lobes #5, 1 mm., glabrous throughout; Ovary inferior; Pappus of bristles, 6-7 mm., white; Stamens 5; Anthers connate (united), 2 mm., acute at base; Style 11 mm., branches half-round in cross-section, stigmatic 1 mm. + appendage 2 mm., glabrous inside, uniformly short hairy on outside, tips rounded; cypselae, all similar in shape, 5 mm., short hairy. Not known from California. In Ackerfield (2012), Asteraceae, Key 2, 15a-b, a question of how tomentose the stems and leaves are made keying tricky. Described from Collection No. 1063, 17 September 2014.

- Apex Park - Northern Parcel, Tom Schweich 5/26/2020. Mixed foothills shrubland and grassland, also seen or collected here: Artemisia dracunculus, Senecio spartioides (in bud, no flowers), Solidago missouriensis, and Xanthisma spinulosum. East-central corner of park where multiple unnamed gulches join before flowing through Stonebridge HOA, small ridge between gulches, 4.47 km. south of the GNIS location of Golden. Tom Schweich 2431. 19 Aug 2020. ( CS JCOS s.n. KHD OBI ) .

- Golden, Roadside. Junction of Colorado highway 93 and road to Golden Gate Park. Barry C. Johnston, with W.A. Weber 1890. 26 Sep 1978. ( COLO00056119 MO3312383 ) Illinois Street at alley between 4th and 5th Streets, 1 km northwest of the GNIS location of Golden. Tom Schweich 1063. 17 Sep 2014. ( CAS UC2045981 ) In a waste place at the intersection of 4th and Illinois Streets, below the Mitchell School playground, 1 km northwest of the GNIS location of Golden. Tom Schweich 1064. 17 Sep 2014. ( UCR266868 ) .

- Heritage Square, open ground. ca 2 1/2 mi S of Golden. T R70W S10. Ernest H. Brunquist 69. 26 Sep 1959. ( CS37486 ) .

- Kinney Run, Tom Schweich 7/6/2018. .

- Magic Mountain, Tom Schweich 4/18/2018. .

- North Washington Open Space, Tom Schweich 3/27/2017. Collected nearby: Lomatium orientale, Mertensia lanceolata, Colutea arboescens, Psoralidium tenuiflorum, and Viola nuttallii. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 2.31 km. north northwest of the GNIS location of Golden (on 12th Street near the Buffalo Rose Saloon). Tom Schweich 2229. 12 Sep 2019. ( CDA COLO EIU KHD OBI REGIS UCR ) .

- South Table Mountain, roadside. uncommon, S. Table Mt.; along Quaker Rd. 13N 0484300E 4399200N. Loraine Yeatts 843. 13 Sep 1983. ( COLO00056044 KHD19332 ) . .

Ericameria nauseosa (Pall. ex Pursh) G. I. Nesom & G. I. Baird var. nauseosa.  (Syn: Chrysothamnus nauseosus (Pall.ex Pursh) Britton ssp. nauseosus ) Rubber Rabbitbush. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Morrison to Golden Ellsworth Bethel, with W. W. Eggleston 6365. 2 Oct 1910. ( NY2039509 ) Hills near Golden. J. H. Ehlers 8535. 18 Sep 1942. ( COLO00056739 ) .

- Kinney Run, with var. graveolens, Ambrosia psilostachya, and Rhus trilobata. Tom Schweich 7/31/2020. .

- South Table Mountain, a lava capped mesa in the Denver Formation; gentle slope draining into NE. facing gulley; with C. n. ssp. graveolens. MVNC S-U, 25-27, S. Table Mt.; mesatop slope draining into NE. facing gully overlooking Rolling Hills Country club. 13N 0484100E 4400300N. Loraine Yeatts 1085. 18 Sep 1984. ( COLO00056713 KHD20730 ) . .

Erigeron compositus Pursh.  (Syn: Erigeron compositus Pursh var. discoideus A. Gray , Erigeron compositus Pursh var. glabratus Macoun ) Cutleaf Daisy. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, from woody caudex, 10 cm.; Leaves, basal, petiole, 18-22 mm., 5 mm. × 6 mm. wide, ternately divided, glandular, straight multicellular hairy; Inflorescence, 1 head per stem; Peduncles, 40 mm., glandular, short straight spreading hairs; Involucre, 5 mm. × 10 mm. wide; Phyllaries, 2+ series, 6 mm. × 1.3 mm. wide, outer phyllaries glandular hairy, green mid-rib and distally, chartaceous then scarious toward margin, tip, acute, purplish; Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, #25, tube 1.8 mm. + blade 5.3 mm. × 1 mm. wide, white, fertile; Disk flowers, many, tube 3.5 mm. + lobes 0.3 mm., expanding gradually, yellow, open; Pappus, well-developed, bristles, 3.5-3.8 mm., ±equal, capillary; Cypsela, 2.2 mm. × 0.6 mm. wide, angled, brown, hairy. (Described from Coll. No. 1901, 31 May 2018).

- Little Scraggy Peak, Moderate slope in Ponderosa pine forest. Northeast slopes of Little Scraggy Peak, 46.5 km. south of the GNIS location of Golden. Tom Schweich 1901. 31 May 2018. ( CAS KHD00069232 OBI ) .

- Lookout Mountain, Gift from Colorado College, 1992. Herbarium of Edward Tatnall, of Brandywine, Delaware (see Harshberger, J.W. 1899. Botanists of Philadelphia and their work, p. 225-226). Mountains near Golden City. E. L. Greene Jun 1870. ( COLO00862102 ) On dry, rocky slope in open pine forest. Lariat Trail, Lookout Mountain. Hansford T. Shacklette 6673. 19 May 1962. ( COLO00857763 COLO00857771 ) . .

Erigeron divergens Torr. & A. Gray.  Spreading Fleabane. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual or short-lived perennial, to 15 cm., tap-rooted, ±spreading hairy throughout, becoming minutely glandular above, hairs multicellular with clear crosswalls; Leaves, basal, absent or withered; cauline, alternate, petiole ±10 mm. + blade ±12 mm. × 2.4 mm. wide, uniformly hairy, somewhat reduced above; Inflorescence, heads borne singly on leafy stems, peduncles spreading or decurved, but cannot be described as “heads nodding;” Involucre, 3 mm. × limb 12 mm.; Receptacle, epaleate; Flowers, 2 kinds; Rays, corolla, 3.5 mm., white fading blue; Disk flowers, corolla, 1.7 mm., yellow; Pappus, short scales and longer capillary bristles, similar on ray and disk flowers; Cypsela, 0.8 mm. (Described from Coll. No. 1489. 13 July 2016).

- Heritage Square, open field. [Carex fen in old silted in beaver pond, along trail below open Pinus contorta forest & above 1st large active beaver pond; ] -- these notes are in error -- Ed. ca 2 1/2 mi S of Golden. T R70W S10. Verbatim Coordinates: 13N 0477200E 4387002N Ernest H. Brunquist 46. 25 Aug 1959. ( CS23864 KHD9970 ) plants growing in open grassy field. about 300 yds west of the archeological project of Peabody Museum (Harvard Univ.) 13N 0481525E 4396144N. Ernest H. Brunquist 33. 20 Aug 1959. ( CS23918 KHD9972 ) .

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, In thin soils or cracks of basalt caprock, near the edge of prairie dog town. Top of North Table Mountain, along an old road and former powerline headed in the general direction of the radio station, 2.6 km. north of the GNIS location of Golden Tom Schweich 1489. 13 Jul 2016. ( CS JCOS s.n. KHD00063464 UC ) Smooth brome-infested grasslands on the lower northwest slope of North Table Mountain, about half-way north from North Table Loop in the direction of Ramstetter Reservoir, 3.85 km. north of the GNIS location of Golden. Tom Schweich 1879. 23 May 2018. ( CAS JCOS s.n. KHD00069211 OBI ) .

- North Washington Open Space, West-central part of hill, southwest slope. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1668. 16 Jun 2017. ( KHD00065482 UCR ) Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 2.27 km. northwest of the GNIS location of Golden. Tom Schweich 2092. 26 Jun 2019. ( KHD ) .

- South Table Mountain, in soil pocket, S. Table Mt.; on top of Castle Rock. 13N 0482000E 4400400N. Peter G. Root 8311. 1 Jul 1983. ( KHD19410 ) .

- Vidler's Gulch, Stony, south facing slope. Vidler's Gulch, Golden. Hazel M. Schmoll 724. 29 Jun 1923. ( COLO00067181 ) .

- White Ranch Park, Habitat: appearing on grassy south-facing slopes throughout the park--no shade USA, Colorado, Jefferson County, White Ranch Park. Verbatim Coordinates: 13N 0476275E 4407224N Berta Anderson 1282. 21 Sep 1977. ( KHD29779 ) Habitat: on south-facing slopes USA, Colorado, Jefferson County, White Ranch Park, Rawhide trail. Verbatim Coordinates: 13N 0476275E 4407224N. Berta Anderson 1283. 17 Oct 1979. ( KHD29736 ) . .

Erigeron flagellaris A. Gray.  Trailing Fleabane. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, to 5-6 cm., with scapose inflorescence to 9 cm., spreading by leafy stoloniferous branches; Leaves, basal and cauline, entire, basal, linear-oblanceolate, 35 mm. × 2.5 mm., cauline, linear, 13 mm. × 1.5 mm.; Inflorescence, single heads on scape to 8 cm.; Receptacle epaleate; Phyllaries, 2+series, ±equal, 4 mm., hairy abaxially, ascending multicellular hairs with clear crosswalls, glandular between hairs; Flowers of 2 kinds; Pappus of bristles, 2 mm., + short scales, that of ray and disc flowers alike; Rays, #±80, corolla white, fading lilac, 8 mm. × 0.5 mm.; Disc flowers, corolla yellow, lobes triangular; Achene, short hairy. (Described from Coll. No. 1116, 28 May 2015).

- Colorado School of Mines Survey Field, Small patch. Tom Schweich 7/6/2016. .

- Kinney Run, Thin vegetation on sandstone. On the west limb of a small hogback, about 2/3 of the way up from Kinney Run to the crest of the hogback, 3.1 km. south of the GNIS location of Golden. Tom Schweich 1829. 16 May 2018. ( CAS COLO02347615 CS UCR ) .

- Mount Vernon Canyon, Vernon Canon. 13N 0479307E 4394636N. Unknown 4 Oct 1925. ( KHD8106 ) .

- North Table Mountain Park, Expected. Tom Schweich 6/12/2017. .

- Ranson/Edwards Homestead Open Space Park, Small patch, inflorescence dried up, in a sea of Rosa sp. Tom Schweich 6/23/2020. Not common in Jefferson County, but with several other nearby collections, e.g., from Rocky Flats and around the mouth of Coal Creek Canyon. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 65 m. east of Plainview Road. Tom Schweich 1116. 28 May 2015. ( CAS JCOS s.n. KHD56969 UC UCR265987 ) Along old road in the direction of the original homestead. High plains above Rocky Flats, 1.7 miles west on CO Highway 72 from CO Highway 93, 1.3 miles north on Plainview Road, then 20 meters east into open prairie. Tom Schweich 1679. 28 Jun 2017. ( CDA EIU JCOS s.n. KHD00065481 OBI ) . .

Erigeron pumilus Nutt.  Shaggy Fleabane. CalPhotos. Jepson eFlora. SEINet Taxon.

- South Table Mountain, 7.5' Golden quad,S. Table Mountain, a few plants along S. side of road to Castle Rock. 13N 0482800E 4400252N. Loraine Yeatts 587. 24 Jun 1983. ( COLO00083832 KHD19324 ) . [ “outer pappus of bristles” in annotation by Weber suggests var. intermedius. ] .

Erigeron strigosus Muhl. ex Willd.  (Syn: Stenactis strigosa (Muhl. ex Willd.) DC. ) Prairie Fleabane. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, along the edge of a dense cattail marsh, located west of McIntyre St. Associated plants include Sandbar Willow, Sedges and Cattail. Outskirts of the City of Golden: 1/4 to 1/2 mile north of 44th Ave along McIntyre St. 13N 0485091E 4403250N. Stanley Smookler 348. 6 Aug 2003. ( KHD40079 ) . .

Erigeron subtrinervis Rydb. ex Porter & Britton.  Threenerve Daisy. CalPhotos. Jepson eFlora. SEINet Taxon.

- Little Scraggy Peak, Also collected here: Juniperus scopulorum, Dieteria bigelovii, and Chenopodium fremontii. Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 2.04 km. southwest of the Little Scraggy trailhead, 61.2 km. south of the GNIS location of Golden. Tom Schweich 2240. 16 Sep 2019. ( CAS KHD OBI UCR ) Also collected here: Juniperus scopulorum, Dieteria bigelovii, and Chenopodium fremontii. Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 2.04 km. southwest of the Little Scraggy trailhead, 61.2 km. south of the GNIS location of Golden. Tom Schweich 2241. 16 Sep 2019. ( CDA COLO EIU REGIS ) . .

Erigeron tracyi Greene.  (Syn: Erigeron cinereus A. Gray , Erigeron colomexicanus A. Nelson , Erigeron divergens Torrey & A. Gray var. cinereus A. Gray ) Running Fleabane. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, 20-25 cm., caudex simple (not stout) non-rhizomatous, hairy throughout, with hairs 0.2-0.4 mm. spreading in all directions, glandular at high magnification; Stem, some with prior year's branches assumed to have been stoloniferous; Leaves, basal and cauline, basal, petiole, to 26 mm. + blade oblanceolate 8-12-20 mm. × 2-4-5.5 mm. wide, short hairy and glandular (especially visible at high magnification), margin entire, tip acute, some withered at flowering time, cauline, ±sessile, reduced or not well-developed above, but up to 32 mm. × 1.8 mm. wide; Peduncle, spreading to descending multicellular hairs with clear crosswalls, slightly pustular (maybe) or glandular at high magnification; Phyllaries, in 2+ ±equal series, but not distinctly imbricate, 3-4.5 mm. × 0.7 mm. wide, lanceolate, green center, light margins, spreading hairy; Receptacle epaleate; Flowers, 2 kinds; Ray flowers, cypsela 0.5 mm. + tube 2 mm. + ligule 4 mm. × 0.3-0.6 mm. wide = 6.5-7 mm. × 0.8 mm. wide, fertile, tip rounded, white & pink fading purple; Disk flowers, yellow; Pappus, ray and disk alike, inner, few capillary bristles, 4 mm., outer, short crown of scales, double pappus not particularly disgnostic in Erigeron. The most common form of E. tracyi is perhaps (speculative) a stabilized, apomictic hybrid between E. flagellaris and E. divergens (FNANM). Described from Coll. No. 1133, 9 Jun 2015 and Coll. No. 1337, 11 May 2016.

- Apex Park - Northern Parcel, Also seen or collected nearby: Juniperus scopulorum, Eriogonum alatum, Turritis glabra, Physalis hederifolia, and Scorzonera laciniata. Thought to be an stable apomictic hybrid of E flagellaris and E. diverngens (FNANM) and is the most common of the three taxa in Golden and vicinity. Northernmost quadrant of the parcel, steep slope part way up the initial Front Range scarp, just north of a small spring, 4.03 km. south of the GNIS location of Golden Tom Schweich 2298. 26 May 2020. ( CAS COLO JCOS s.n. KHD UC ) Also collected nearby: Ribes cereum, Prunus virginuana, Astragalus flexuosus, Lupinus argenteus, Linum lewisii, Bromus japonicus, and Nassella viridula. Northernmost part of Apex Park, northeast corner, in grasslands on alluvial terrace just below foothill shrublands and the Rocky Mountain foothills scarp, 4.09 km. south of the GNIS location of Golden. Tom Schweich 2345. 10 Jun 2020. ( CDA CS EIU JCOS s.n. KHD ) .

- Colorado School of Mines Survey Field, Highest Great Plains at the base of the Rocky Mountain Front Range, small southeast-facing terrace, above an unnamed stream in the south end of the Survey Field, 2.42 km. south of the GNIS location of Golden. Tom Schweich 1891. 28 May 2018. ( CS EIU OBI ) .

- Golden, Found in both open ground and in area shaded by willow species; associated plants: Phacelia heterophylla and Sedum lanceolatum. Western outskirts between Clear Creek and 8th St. near Brianwood Inn. 13N 0480599E 4400492N. Stanley Smookler 40. 10 May 1992. ( KHD30410 ) .

- North Table Mountain, Signed as Jefferson County Open Space, parcel owned by City of Golden. Lower south slopes of North Table Mountain, 100 m. east of the end of Peery Parkway, 1.2 km. north northeast of the GNIS location of Golden. Tom Schweich 1337. 11 May 2016. ( CAS JCOS s.n. KHD00063981 UCR278798 ) .

- North Table Mountain Park, Very thin soil on volcanic caprock of mesa. Mesa top, southeast portion of North Table Mountain, 3.3 km northeast of the GNIS location of Golden. Tom Schweich 1133. 9 Jun 2015. ( JCOS s.n. KHD56940 UC UCR265984 ) .

- North Washington Open Space, South side of hill, near the informal “bench.” Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1612. 15 May 2017. ( CDA COLO02347862 KHD00065379 ) .

- Ranson/Edwards Homestead Open Space Park, Observed on CoNPS field trip, coordinates approximate. Tom Schweich 6/10/2018. .

- South Table Mountain, among rocks on SW facing slope. South Table Mountain. 13N 0482700E 4400200N. Janet L. Wingate 2443. 16 Jun 1983. ( KHD14314 ) a lava capped mesa in the Denver Formation; on W. facing slope along tr. in open area between shrubs S. Table Mt.; on W. facing slope along tr. below Castle Rock. 13N 0482100E 4400100N. Loraine Yeatts 932. 25 Jun 1984. ( COLO00069302 CS85541 KHD20725 KHD20934 ) W. facing slope. S. Table Mt. Below Castle Rock along trail. UTM: 822002. Mary E. Edwards 436. 1 Jun 1983. ( COLO00064923 ) .

- Tin Cup Ridge, Mixed grasses and forbs. Collected with Achillea millefolium, Erigeron tracyi, Heterotheca villosa, and Medicago lupulina. East base of the hogback locally called Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 6.4 km. south southeast of the GNIS location of Golden. Tom Schweich 2100. 30 Jun 2019. ( JCOS s.n. KHD OBI REGIS ) . .

Erigeron vetensis Rydb.  Early Bluetop Fleabane. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, to 12 cm., sparse multicellular hairs with clear crosswalls to 0.8 mm., plus very small (<0.1 mm.) peg-like glands, throughout; Leaves, basal, petiole 45 mm. + blade 65 mm. × 5 mm. wide, narrowly oblanceolate, cauline, reduced in size, #4-5, sessile, 15 mm. × 2.1 mm. wide, oblanceolate; Inflorescence, scapose, 21 cm.; Heads, mostly borne singly; Involucre, 5 mm. × 11 mm. wide; Phyllaries, subequal, in 2 rows, 5 mm. × 0.7 mm. wide, margins not ciliate, tip acuminate; Flowers of 2 kinds, Ray flowers, fertile, corolla, 11 mm. × 1.6 mm. wide, ±white, fading blue; Disk flowers, corolla, 4.0 mm., yellow, lobes triangular, style branch appendages triangular; Pappus, short (0.3 mm.) and long (2.2 mm.) capillary bristles; Cypsela, 1.5-1.6 mm. (Described from Coll. No. 1421, 10 Jun 2016).

- Golden, dry hills. Golden-Central City. R Duthie & I Clokey 9 Jun 1920. ( CS21177 ) Base of Lookout Mountain. 13N 0480336E 4399274N. Unknown 1 Jun 1913. ( KHD8098 ) .

- Lookout Mountain, Golden: Lookout Mountain. Earl L. Johnston 775.1 4 Jul 1915. ( RM482748 ) On dry, rocky slope in open pine forest. Lariat Trail, Lookout Mountain. Hansford T. Shacklette 6674. 19 May 1962. ( COLO00857797 COLO00857805 ) .

- Ranson/Edwards Homestead Open Space Park, Small ridge between two drainages, grasses and a few ponderosa pines. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.8 mi. north on Plainview Road, then 300 m. southwest upslope.15.8 km. north northeast of the GNIS location of Golden. Tom Schweich 1421. 10 Jun 2016. ( CAS JCOS s.n. KHD00063991 OBI83311 UC UCR277989 ) . .

Gaillardia aristata Pursh.  Blanketflower. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 40 cm.; Leaves, alternate, entire to toothed; Inflorescence, single heads on peduncles 13-18 cm., flowers of 2 kinds; Phyllaries, 2+ series, 17 mm. × 2.7 mm. wide, lance-linear; Receptacle, epaleate, setae, to 10 mm.; Rays, sterile, corolla, 21 mm. × 10 mm. wide, yellow, deeply 3-lobed; Disk flowers, corolla, 7 mm., purple; Pappus of 6+ aristate scales, 4 mm., awn 2×> body. Described from Coll. No. 1205, 12 Jul 2015.

- Colorado School of Mines Survey Field, On the top of a drier alluvial ridge, near the center of the Survey Field, 2.2 km south southeast of the GNIS location of Golden. Tom Schweich 1205. 12 Jul 2015. ( KHD00062158 ) .

- Deadman Gulch, East-facing grassy slope. Deadman Gulch is often referred to by the locally euphemistic name of “Kinney Run.” High plains between US Hwy 6 and Lookout Mountain, about 150 m. northwest of the Deadman Gulch undercrossing of US Hwy 6, 2.3 km. south of the GNIS location of Golden. Tom Schweich 1425. 15 Jun 2016. ( CS UCR278002 ) .

- Golden, Cobble soil. Flat exposure. Golden. F.A. Branson 10 Jun 1958. ( COLO00857813 ) .

- Lippincott Property, Also collected here: Bromus japonicus, Dianthus armeria, Heterotheca villosa, Potentilla recta, and Veronica anagallis-aquatica. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, open wet prairie in southeast portion, 21.7 km. north northwest of the GNIS location of Golden. Tom Schweich 2116. 1 Jul 2019. ( JCOS s.n. ) Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, open wet prairie in southeast portion, 21.8 km. north northwest of the GNIS location of Golden. Tom Schweich 2117. 1 Jul 2019. ( CDA CIBO COLO KHD ) .

- Little Scraggy Peak, Tom Schweich 7/23/2019. .

- Lookout Mountain, Dry mountain slopes. Denver Mountain Parks near Golden. J. H. Ehlers 8104. 5 Jul 1941. ( COLO 00089094 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Zeise, Larry Steven, 1976 .

- North Washington Open Space, Top of hill, center of parcel. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1665. 16 Jun 2017. ( KHD00065494 OBI ) .

- Ranson/Edwards Homestead Open Space Park, Mostly grasses and forbs; collected with Rosa arkansana and Crataegus succulenta. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.2 mi. north on Plainview Road, then 200 m. east along the south side of an ephemeral stream; 15.2 km. north northwest of the GNIS location of Golden. Tom Schweich 1454. 27 Jun 2016. ( CAS EIU JCOS s.n. KHD00063470 ) .

- South Table Mountain, A lava capped mesa in the Denver Formation. West of Quaker Road, North of Golden Hills Road, in meadow on North side of hill 6020. 13N 0483567E 4400080N. Loraine Yeatts 1268. 5 Jun 1986. ( COLO00088997 KHD24220 ) . .

Galinsoga parviflora Cav.  Gallant Soldier. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Weed of disturbed ground 611 Water Street, Golden. 13N 0480288E 4400799N. Jim Ratzloff 22 Jul 1976. ( KHD10344 ) . .

Gnaphalium uliginosum L.  Marsh Cudweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- South Table Mountain, Ground cover in patches. Unsure if P. pensylvanica in the associated taxa is Potentilla or Prunus. South Table Mt., a lava capped mesa in the Denver Formation; flat quarry area, recently dried with seedling cottonwoods, chenopodium, cyperus lava capped mesa in Denver formation. 13N 0484300E 4400000N. Loraine Yeatts 1072. 18 Sep 1984. ( COLO00089557 KHD20728 ) . .

Grindelia squarrosa (Pursh) Dunal.  Curlycup Gumweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, In a watercourse on the lip of a now dry cascade and in the surrounding area. Mixed foothills shrubland with a few Rocky Mountain junipers. Also collected here: Polygonum douglasii. About half way up the initial Rocky Mountain Front Range scarp, near the south edge of the restricted area, 5.03 km. south of the GNIS location of Golden. Tom Schweich 2384. 17 Jul 2020. ( CDA COLO JCOS s.n. UC ) .

- Kinney Run, Foothills shrubland, also collected here: Astragalus shortianus, Cynoglossum officinale, Lithospermum arvense, Scutellaria brittonii, and Toxicoscordion paniculatum. Near the junction of Deadman Gulch with Kinney Run, on a small hill that is a highly eroded hogback continued from the east side of Kinney Run, 2.37 km. south of the GNIS location of Golden. Tom Schweich 2410. 31 Jul 2020. ( CDA COLO OBI UCR ) .

- Lippincott Property, Also collected here: Heterotheca foliosa, Pericome caudata, Senecio spartioides, and Urtica dioica. Variety squarrosa per leaf proportions in Ackerfield (2015) if infraspecific names are to be applied. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, among boulders on the south side of Bull Gulch, 22.9 km. north northwest of the GNIS location of Golden. Tom Schweich 2213. 29 Aug 2019. ( CIBO JCOS s.n. KHD OBI REGIS ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Zeise, Larry Steven, 1976 .

- North Table Mountain Park, Gentle grassy slope above oldest lava flow. Northwest corner of North Table Mountain, lower elevation lobe of the mesa, formed on top of the oldest basalt flow embedded in the Denver Formation, 3.1 km. north of the GNIS location of Golden. Tom Schweich 1737. 15 Aug 2017. ( JCOS s.n. KHD00065318 UCR ) .

- Ranson/Edwards Homestead Open Space Park, Scattered throughout this field. Tom Schweich 7/29/2015. High plains above Rocky Flats, 1.7 mi. west on Colorado Highway 72 from Colorado Highway 93, 1.6 mi. north on Plainview Road, then 35 meters southwest on the slope above the road. Tom Schweich 1765. 1 Sep 2017. ( CAS JCOS s.n. KHD00065168 ) .

- South Table Mountain, S. Table Mountain, common on mesa top.13N 0484099E 4400109N. Loraine Yeatts 803. 20 Aug 1983. ( KHD19411 ) . .

Grindelia subalpina Greene.  Subalpine Gumweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- South Table Mountain, hardpacked clay. Along Quaker Rd, on S. Table Mountain. 13N 0483016E 4400482N. Loraine Yeatts 802. 20 Aug 1983. ( KHD19412 ) . .

Gutierrezia sarothrae (Pursh) Britton & Rusby.  Broom Snakeweed. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, tap-rooted, to 9 cm.; Leaves, alternate, linear, 20 mm. × 1 mm. mm. wide, dotted with embedded oil glands, very few short hairs; Peduncle, 0.5-1.5 mm.; Inflorescence, some flowers with strap-shaped corollas, flowers of two kinds in same heads, Involucre, 3.5 mm. × 2.5-3.0 mm. wide, obconic, not gummy; Phyllary, 2-3 unequal series, inner folded around ovary of ray flowers, dotted with embedded oil glands, tips appressed; Receptacle, epaleate; Rays, #5, yellow; Disk, #4; Pappus, a well-developed crown of scales on both ray and disk flowers; (Described from Coll. No. 144, 3 Oct 1997: keys easily to Gutierrezia sarothrae. However, inner phyllaries are folded around ovary of ray flowers, a character not mentioned in keys or description.)

- Apex Park - Northern Parcel, Foothills grassland, with both foothills and riparian shrubland nearby, toe of small east-facing ridge with Helianthus pumilus, Artemisia dracunculus, and Koeleria maculata. East-central corner of park where multiple unnamed gulches join before flowing through Stonebridge HOA, 4.44 km. south of the GNIS location of Golden. Tom Schweich 2429. 19 Aug 2020. ( COLO CS JCOS s.n. UC ) .

- Golden, Rolling plains and hills. J. H. Ehlers 8345. 25 Sep 1941. ( RM492640 ) Dry, disturbed, grazed. [Coordinates look bogus -- Ed.] Dora and Pauline Roberts Memorial Nature Preserve; given to Polly Steele to the Denver Botanic Gardens; bordering west side of McIntyre Street. 0.6 miles south of west 64th Avenue, Golden. 13N 0481011E 4399988N. Janet L. Wingate 4587. 24 Aug 1986. ( KHD23400 ) .

- Kinney Run, Tom Schweich 7/6/2018. .

- Lippincott Property, Open recent growth ponderosa pine woodland, also seen/collected here: Achnatherum nelsonii, and Elymus elymoides. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, approx. centroid of parcel, atop spoils pile of clay pit, 22.5 km. north northwest of the GNIS location of Golden. Tom Schweich 2211. 29 Aug 2019. ( CIBO JCOS s.n. KHD OBI REGIS ) .

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Mixed grasses, subshrubs, and forbs. West-facing slope on the north side of North Table Mountain, 0.92 km. south of the Mesa Spur trailhead on W. 58th Avenue, 4.3 km. north northeast of the GNIS location of Golden. Tom Schweich 1543. 18 Aug 2016. ( EIU JCOS s.n. KHD00063969 ) Top of North Table Mountain, near southern edge, 360 m. east of the USBR monument designated “North Table,” 1.6 km. north northeast of the GNIS location of Golden. Tom Schweich 1550. 1 Sep 2016. ( COLO02348456 CS JCOS s.n. KHD00064002 ) .

- North Washington Open Space, Determination tentative. Tom Schweich 3/27/2017. Eastern half of parcel, east slope at edge of smooth brome infestation. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1751. 31 Aug 2017. ( CDA KHD00065156 ) .

- Ranson/Edwards Homestead Open Space Park, Steep south-facing slope, with a prairie rose, blue grama, and artemisia. High plains above Rocky Flats, 16.25 km north northwest of Golden, 1.8 miles north of CO State Highway 72 on Plainview Road, then 105 m. west of Plainview Road. Tom Schweich 1289. 9 Sep 2015. ( CAS JCOS s.n. KHD00062159 OBI83228 UC UCR267486 ) .

- South Table Mountain, South-facing gentle slope near meatop. South Table Mountain. 13N 0482324E 4400917N. Loraine Yeatts 820. 8 Aug 1983. ( COLO00091546 KHD19323 ) . .

Helianthus annuus L.  Common Sunflower. CalPhotos. Jepson eFlora. SEINet Taxon.

- Heritage Square, sunny, dry banks. ca 150 yds E of Peabody Museum project. T R70W S10. Ernest H. Brunquist 122. 28 Jul 1960. ( CS38182 ) .

- Lookout Mountain, Lookout Mt. Park. William Huestis 2 Aug 1916. ( COLO 00093492 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- South Table Mountain, On south facing slope, near mesa edge in lava, clay soil. South Table Mountain. 13N 0484205E 4399301N. Loraine Yeatts 684. 11 Jul 1983. ( KHD19325 ) On mesa edge in disturbed ground; very common and widespread especially along roads. S. Table Mt.; on Mesa edge. UTM: 841993 Loraine Yeatts 705. 16 Jul 1983. ( COLO00093781 ) . .

Helianthus nuttallii Torr. & A. Gray.  Nuttall's Sunflower. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Wet places. Clear Creek valley. Alice Eastwood 92. 3 Sep 1910. ( COLO00094680 ) Along ditch. Ira W. Clokey 3947. 5 Sep 1920. ( RM492334 ) . .

Helianthus pauciflorus Nutt. ssp. subrhomboideus (Rydb.) O. Spring & E. Schilling.  (Syn: Helianthus rigidus (Cass.) Desf. ssp. subrhomboideus (Rydb.) Heiser , Helianthus subrhomboideus Rydb. ) Stiff Sunflower. CalPhotos. Jepson eFlora. SEINet Taxon.

[Description pending verification of determination for Coll. No. 1260. -- 27 Dec 2015] Perennial from rhizomes (not a tap-rooted annual), to 1 mm.; Leaves, cauline, opposite, 135 mm. × 32 mm. wide, rhomboid, margin, straight, short-toothed, green, not glaucus, adaxial scabrous-hispid, abaxial scabrous; Inflorescence, solitary heads on long peduncles; Peduncle, 25 cm.; Phyllaries in 3+ imbricate series, all similar, 8-9 mm. × 4 mm. wide, ovo-lanceolate, margin, ciliate, tips, erect; Receptacle, hemispheric, paleate; Paleae, 8 mm., ciliate distally; Rays, sterile, pappus, 2 scales 2.5 mm., corolla, 24 mm. × 6 mm. wide, yellow; Disk flowers, fertile, pappus, crown of scales with 2 elongated to 4 mm., corolla, 5 mm., yellow to dark red distally; cypsela, 3.3 mm., compressed quadrangular. Described from Coll. No. 1260, 26 Jul 2015.

- Lippincott Property, Steep east-facing grassy slope. Also collected here: Heliomeris multiflora var. multiflora. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, southwest segment of parcel, nearly up to the railroad tracks, 22.6 km. north northwest of the GNIS location of Golden. Tom Schweich 2223. 29 Aug 2019. ( KHD REGIS ) .

- Lookout Mountain, Lookout Mt. William Huestis 2 Aug 1916. ( CS31175 ) .

- North Table Mountain Park, Also at this location: Thelesperma megapotamicum, Eriogonum alatum, and E. effusum. Near the top of several small hills (toe of landslide?) on the lower north slope of North Table Mountain, 0.7 km. southeast of the Mesa Spur Trailhead on 58th Avenue, 4.8 km. north northeast of the GNIS location of Golden. Tom Schweich 1507. 22 Jul 2016. ( COLO2299709 CS EIU JCOS s.n. KHD00063471 ) .

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 6/19/2017. Tom Schweich 7/28/2017. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 436 m. west of Plainview Road. Tom Schweich 1260. 26 Jul 2015. ( JCOS s.n. KHD00061672 UCR267469 ) High plains above Rocky Flats, 15.8 km north northeast of Golden, 1.4 miles north of CO State Highway 72 on Plainview Road, 194 m. northeast of Plainview Road. Tom Schweich 1267. 29 Jul 2015. ( CAS JCOS s.n. KHD00062160 OBI83238 UC ) Wet, almost swampy, area on the south side of an intermittent stream. 1.7 mi. west on CO Highway 72 Coal Creek Canyon Road, from CO Highway 93, 1.2 mi. north on Plainview Road, then 400 m. east of Plainview road, 15.3 km. north northwest of the GNIS location of Golden. Tom Schweich 1557. 3 Sep 2016. ( COLO02348290 CS ) High plains above Rocky Flats, 1.7 miles west on Colorado Highway 72 from Colorado Highway 93, 0.8 miles north on Plainview Road, then 385 meters west into open prairie. Tom Schweich 1716. 28 Jul 2017. ( CDA EIU UCR ) Low, wet area. Also collected here: Solidago rigida var. humilis, nearby: Lactuca serriola, Sonchus asper, and Sporobolus heterolepis. High plains above Rocky Flats, 19.4 km. north northwest of the GNIS location of Golden, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. north on Plainview Road, then 125 m. west into open prairie. Tom Schweich 2199. 27 Aug 2019. ( CAS OBI REGIS UC ) . .

Helianthus pumilus Nutt.  Little Sunflower. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 40 cm.; Leaves, cauline, alternate, occasionally opposite, then bases conjoined, simple, petiole 7-10 mm. + blade 55-86 mm. × 22-30 mm. wide, lanceolate, flat (not folded), margin, entire to lightly toothed, adaxial, pustular strigose, hairs multicellular, crosswalls clear, abaxial, glandular and strigose; Inflorescence, heads single to few on leafy stems, peduncles to 8-10 cm., hairy, glandular; Involucre, 9 mm. × 16 mm. wide; Phyllaries in 2+ series, similar, 6-10 mm. × 2.0-3.5(4) mm. wide, greene erect, ovate, strigose abaxially, margins ciliate, tip acuminate, not as “stiff” or “tough” as those of Coll. No. 1199; Receptacle, slightly convex, paleate; Disk, 17 mm. wide; Palea, 9 mm., tip, glandular, hairy distally; Flowers, 2 kinds; Ray flowers, sterile, #10-12, corolla, 17-25 mm. × (4)6-9 mm. wide, yellow; Disk flowers, corolla, 4-6 mm., yellow, lobes, #5, 1 mm., yellow, anther appendages reddish-brown; Pappus of few long (2.5-4 mm.) aristate scales; Cypsela, 3.5 mm. × 1.4 mm. wide, quadrangular,not laterally compressed black. Described from Coll. No. 1210, 1426, and 1704.

- Colorado School of Mines Survey Field, Highest plains at the base of Lookout Mountain. Northern portion of the Survey Field, near the road to city water tank from Lookout Mountain Road, 1.95 km south southwest of the GNIS location of Golden Tom Schweich 1199. 12 Jul 2015. ( CAS KHD00062162 UC UCR267450 ) Foothills grassland below shrubland; also here: Astragalus crassicarpus, Heterotheca villosa, and Hymenopappus filifolius. Southern part of the Survey Field, high plains at the base of the Rocky Mountain Front Range, 3.18 km. south of the GNIS location of Golden Tom Schweich 2367. 20 Jun 2020. ( CDA COLO CS EIU ) .

- Deadman Gulch, Northeast-facing grassy slope. High plains between US Hwy 6 and Lookout Mountain, about 145 m. northwest of the Deadman Gulch undercrossing of US Hwy 6, 2.3 km. south of the GNIS location of Golden. Tom Schweich 1426. 15 Jun 2016. ( CS EIU OBI83310 ) .

- Golden, Roadside. Junction of HWY6 and HWY58, west of Golden. 13N 0478751E 4399196N. Janet L. Wingate 61. 17 Jul 1978. ( COLO00095042 KHD447 ) .

- Heritage Square, 1/2 mi WSW of Peabody Museum project, W of E end of shallow canyon of Apex Ck. T R70W S10. Ernest H. Brunquist & J Friedlander 111. 16 Jul 1960. ( CS38391 ) .

- Mount Vernon Canyon, In gulch of old US 40 just below turn off to Cabrini Shrine. 13N 0480473E 4394143N. Berta Anderson 1056. 28 Jun 1979. ( KHD25845 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Zeise, Larry Steven, 1976 .

- North Table Mountain Park, Middle north slopes of North Table Mountain, above the North Table Loop trail, 3.9 km north northeast of the GNIS location of Golden. Tom Schweich 1210. 13 Jul 2015. ( JCOS s.n. KHD00062161 UCR267451 ) South side of North Table Mountain, along the Climbing Access Trail just below the uppermost basalt flow; 224 m. southeast of the USBR monument designated “North Table,” 1.44 km. north northeast of the GNIS location of Golden. Tom Schweich 1523. 5 Aug 2016. ( COLO02347920 JCOS s.n. KHD00063462 UC ) .

- North Washington Open Space, Determination tentative Tom Schweich 3/27/2017. East-facing slope near center of parcel. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1704. 14 Jul 2017. ( CAS CDA KHD00065458 ) .

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 6/29/2017. Sunflower, long coarse hairs, a few disc flowers have reddish lobes. High plains above Rocky Flats, 1.7 miles west on Colorado Highway 72 from Colorado Highway 93, 0.8 miles north on Plainview Road, then 360 meters west into open prairie. Tom Schweich 1715. 28 Jul 2017. ( EIU JCOS s.n. KHD00065332 ) Also collected here: Eriogonum alatum. Highest plains above Rocky Flats, 1.7 mi. west on CO Highway 72 from CO Highway 93, 1.4 mi. generally north on Plainview Road, then about 150 m. southwest onto a slightly dryer ridge above the road, 15.5 km. north northeast of the GNIS location of Golden. Tom Schweich 1973. 13 Jul 2018. ( COLO02347623 CS REGIS ) .

- South Table Mountain, South facing, clay soil, recent burn site. South Table Mountain, below mesa edge. 13N 0483009E 4400494N. Loraine Yeatts 610. 27 Jun 1983. ( KHD19326 ) Lava -capped mesa. Few plants on steep E. facing roadcut. S. Table Mt. Along Quaker rd. UTM: 84269932 Loraine Yeatts 771. 7 Aug 1983. ( COLO00095232 ) .

- Tin Cup Ridge, Among shrubs and grasses typical of Front Range foothills. Top of the hogback locally called Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 6.42 km. south southeast of the GNIS location of Golden. Tom Schweich 2106. 30 Jun 2019. ( CAS JCOS s.n. KHD OBI UCR ) . .

Heliomeris multiflora Nutt.  (Syn: Viguiera multiflora (Nutt.) S. F. Blake ) Showy Golden Eye. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Gulch, dry. bed of Apex Ck within 1/2 - 1 mi WSW of Peabody Museum project. T R70W S10. Ernest H. Brunquist 131. 4 Aug 1960. ( CS38192 KHD323 ) . [ KHD34255 is determined Viguiera multiflora, a synonym of Heliomeris m.. ]

- Golden, Earl L. Johnston 393.2 28 Aug 1916. ( RM482632 ) .

- Lookout Mountain, Above Golden. Mrs. Ella Bailar 1905. ( COLO00095463 ) . .

Heliomeris multiflora Nutt. var. multiflora.  Showy Golden Eye. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lippincott Property, Steep east-facing grassy slope. Also collected here: Helianthus pauciflorus ssp. subrhomboideus. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, southwest segment of parcel, nearly up to the railroad tracks, 22.6 km. north northwest of the GNIS location of Golden. Tom Schweich 2224. 29 Aug 2019. ( CAS CIBO COLO JCOS s.n. KHD ) .

- Ranson/Edwards Homestead Open Space Park, Edge of an emphemeral stream, with Lsyimachia ciliata, Mentha arvensis, and Lycopus americanus. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.1 mi. north on Plainview Road, then 725 m. west to an ephemeral stream, 19.7 km. north northwest of the GNIS location of Golden. Tom Schweich 2210. 27 Aug 2019. ( JCOS s.n. KHD OBI UCR ) . .

Heterotheca foliosa (Nutt.) Shinners.  (Syn: Heterotheca villosa (Pursh) Shinners var. foliosa (Nutt.) V.L. Harms ) Hairy False Goldenaster. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, to 40 cm.; Stem, spreading hairy, glandular; Leaves, cauline, alternate, 33 mm. × 9 mm. wide, oblong, margin entire, tip acute, appressed hairy; Peduncle, 15 mm.; Bracts, leafy, 10-16 mm. × 2.5 mm., lanceolate, some exceeding heads by 4-7 mm.; Involucre, 9 mm. × 14 mm. wide; Phyllaries, in 4+ graduated series, 4-9 mm. × 1 mm. wide, lanceolate, slightly keeled proximally, mostly green, abaxial surface glandular and hairy, margin hairy; Receptacle, epaleate, short (0.5 mm.) scales; Flowers, 2 kinds; Rays, sterile, corolla, 11 mm., yellow; Disk flowers, corolla, 7 mm., yellow; Pappus, short (0.6 mm.) and long (6 mm.) bristles, ≥disk corolla; cypsela, 1.3 mm., hairy. Described from Coll. No. 1258, 26 Jul 2015.

- Heritage Square, Habitat: gentle slope, open grassy field, 6125 ft USA, Colorado, Jefferson, South facing slope about 100 yds from Peabody Museum of Harvard Univ. Verbatim Coordinates: 13N 0477154E 4386895N E. H. Brunquist 118. 28 Jul 1960. ( KHD8534 ) .

- Lippincott Property, Also collected here: Grindelia squarrosa, Pericome caudata, Senecio spartioides, Nepeta cataria, and Urtica dioica. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, among boulders on the south side of Bull Gulch, 22.9 km. north northwest of the GNIS location of Golden. Tom Schweich 2215. 27 Aug 2019. ( CIBO COLO JCOS s.n. KHD OBI ) .

- Little Scraggy Peak, Also collected here: Lithospermum multiflorum, Geranium caespitosum, Ipomopsis aggregata ssp. collina, Bromus pumpellianus, and Koeleria macrantha. Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, fairly close to Little Scraggy trailhead, about 4 mi. south of town of Buffalo Creek by Cty Rd 126, 60 km. south of the GNIS location of Golden. Tom Schweich 2177. 23 Jul 2019. ( CIBO COLO JCOS s.n. KHD OBI ) .

- Ranson/Edwards Homestead Open Space Park, North-facing slope, south of the intermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 295 m. west of Plainview Road. Tom Schweich 1258. 26 Jul 2015. ( JCOS s.n. KHD00062163 UCR267471 ) [ Treated as H. foliosa (Nutt.) Shinners by Ackerfield (2015), H. villosa (Pursh) Shinners var. foliosa (Nuttall) V. L. Harms by FNANM. H. fulcrata (Greene) Shinners misapplied. ] Area with down, burned ponderosa pines, also collected here: Ceanothus fendleri, nearby Amorpha nana, Danthonia spicata, and Sorghastrum nutans. High plains above Rocky Flats, northwest corner of Ranson/Edwards, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 2.1 mi generally north on Plainview Road, then 350 m. west. Tom Schweich, with Cindy Trujillo 2226. 10 Sep 2019. ( CAS CDA REGIS UC ) .

- South Table Mountain, Growing under elm tree next to road in clay soil of volcanic origin; plant branched from base with several almost erect stems. S. Table Mt. UTM: 843993 Loraine Yeatts 743. 27 Jul 1983. ( COLO00096321 ) [ Originally ID as Heterotheca villosa var. foliosa. Annotations: Heterotheca fulcrata, det. by W. A. Weber 1984. / Heterotheca foliosa (Nutt.) Shinners; A fairly distinct race of H. villosa, common in the Colorado Front Range. This has nothing to do with H. fulcrata; det. By W. A. Weber 1996. ] Along Quaker Rd, just N. of Golden Hills Rd growing under elm tree; only plant in area.. 13N 0483009E 4400494N. Loraine Yeatts 753. 27 Jul 1983. ( CS85522 KHD19395 ) . [ CS 86622 is determined H. foliosa, KHD8541 is determined H. fulcrata. H. fulcrata misapplied, per Ackerfield (2015). ] .

Heterotheca villosa (Pursh) Shinners.  (Syn: H. v. (Pursh) Shinners var. nana (A. Gray) Semple , H. v. (Pursh) Shinners var. villosa ) Hairy False Goldenaster. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 50 cm.; Leaves, cauline alternate, entire, 1-veined, distal perpendicular to stems, hairs > glands; Heads solitary, with both ray and disk flowers; Phyllaries in 2+ series, unequal, to 7 mm.; Rays, 9 mm.; Pappus double, outer narrow scales ≤ 1 mm. (easier to see on mature fruit), inner bristles, 6.5 mm., white; Fruit, disk 3 mm., hairy.

- Clear Creek Canyon, north of Clear Creek Canyon. A. L. Ward 14 Jun 1955. ( CS74488 ) .

- Colorado School of Mines Survey Field, Foothills grassland below shrubland; also here: Astragalus crassicarpus, Helianthus pumilus, and Hymenopappus filifolius. Southern part of the Survey Field, high plains at the base of the Rocky Mountain Front Range, 3.18 km. south of the GNIS location of Golden Tom Schweich 2368. 20 Jun 2020. ( CAS CDA CS EIU ) .

- Golden, Plains. Golden. Base of Lookout Mt. J. H. Ehlers 8103. 3 Jul 1941. ( COLO00098749 ) Roadside. Junction of hwy 6 & hwy 58 West of Golden. 13N 0479795E 4400337N. Janet L. Wingate 60. 17 Jul 1978. ( KHD446 ) .

- Golden Reservoir, SE-facing slope, sandy soil. Lariat Loop Rd., 1 mi. NW of I-70, 1/4 mi. SW of Golden Reservoir, SW of Golden. T4S R70W S5. J Hutchison 8. 1 Sep 1996. ( CS82048a ) .

- Heritage Square, 125 yds archeological excavation of Peabody museum E by NE. T R70W S10. Ernest H. Brunquist 1 Jul 1960. ( CS37647 KHD607 ) .

- Kinney Run, Var. minor if infraspecific names are to be applied. West slope of the hogback on the east side of Kinney Run, between the Cambria Lime Kiln and Tripp Ranch, 3.20 km. south southeast of the GNIS location of Golden. Tom Schweich 1967. 6 Jul 2018. ( COLO02348571 KHD00068682 OBI UC ) .

- Lippincott Property, At edge of small creek; also collected here: Dianthus armeria, Prunella vulgaris, Potentilla recta, and Veronica anagallis-aquatica. Variety minor if infraspecific names are to be applied. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, open wet prairie in southeast portion, 21.7 km. north northwest of the GNIS location of Golden. Tom Schweich 2113. 1 Jul 2019. ( CDA CIBO JCOS s.n. KHD ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Zeise, Larry Steven, 1976 .

- North Table Mountain Park, Lower north slopes of North Table Mountain, between the Tablerock Trail and North Table Loop, 4.0 km north northeast of the GNIS location of Golden. Tom Schweich 1209. 13 Jul 2015. ( CS JCOS s.n. KHD00062155 OBI83171 ) Mixed grasses and forbs upslope of North Table Loop. Lower north slopes of North Table Mountain, 1.02 km. southwest of the Mesa Spur trailhead on 58th Avenue, 4.66 km. north northeast of the GNIS location of Golden. Tom Schweich 1521. 29 Jul 2016. ( EIU JCOS s.n. KHD00063461 OBI83315 ) .

- North Washington Open Space, Tom Schweich 3/27/2017. Top of hill, center of parcel. Somewhat ambiguous as to var. minor vs. var. nana. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1664. 16 Jun 2017. ( CDA EIU KHD00065487 ) .

- Ranson/Edwards Homestead Open Space Park, Thinly vegetated rocky alluvial terrace. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 60 m. west of Plainview Road. Tom Schweich 1221. 16 Jul 2015. ( JCOS s.n. KHD56974 UC UCR267453 ) High plains above Rocky Flats, 16.25 km north northwest of Golden, 1.8 miles north of CO State Highway 72 on Plainview Road, then 185 m. west southwest of Plainview Road. Tom Schweich 1293. 9 Sep 2015. ( JCOS s.n. KHD56975 UC UCR267488 ) High plains above Rocky Flats, 1.7 mi. west on CO Highway 72 Coal Creek Canyon Road from CO Highway 93, 1.6 mi. generally north on Plainview Road, then 10 m. northeast, 15.75 km. north northwest of the GNIS location of Golden. Tom Schweich 1942. 14 Jun 2018. ( COLO02347599 REGIS ) .

- South Table Mountain, Uniformly covering S. facing slope below mesa edge; very common. Front Range, S. Table Mountain, Golden. 13N 0484200E 4399300N. Loraine Yeatts 605. 27 Jun 1983. ( COLO00098665 KHD19408 ) .

- Tin Cup Ridge, Mixed grasses and forbs. Collected with Aegilops cylindrica, Erigeron tracyi, Melilotus officinalis, Nassella viridula, and Poa compressa. Probably var. minor if infraspecific names are to be applied. East base of the hogback locally called Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 6.4 km. south southeast of the GNIS location of Golden. Tom Schweich 2097. 30 Jun 2019. ( CAS CS JCOS s.n. KHD ) .

- Tucker Gulch (lower), Common within the city limits of Golden, along the creek of Tucker Gulch and the Tucker Gulch Trail, about 250 m. north of the First Street Bridge, and 350 m. south southwest of Ford Street. Tom Schweich 1055. 10 Aug 2014. ( CAS UC2045980 UCR266872 ) . .

Hieracium albiflorum Hook.  White-Flower Hawkweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lippincott Property, In ponderosa pine woodland, thick forest duff, with Juniperus communis and J. scopulorum, and Berberis repens. Most plants show some evidence of herbivory. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, southwest corner near the railroad tracks, 22.3 km. north northwest of the GNIS location of Golden. Tom Schweich 2150. 13 Jul 2019. ( CIBO JCOS s.n. KHD ) . .

Hymenopappus filifolius Hook. var. polycephalus (Osterh.) B.L. Turner.  Many-Headed Fine-Leaved Wooly-White. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 60 cm., ±tomentose throughout; Leaves, basal, petiole 35 mm. + blade 75-105 mm. × 30-50 mm. wide, oblanceolate in shape, base conspicuously tomentose, bipinnately dissected to filiform segments, ultimate leaf divisions (8)12-19 mm., cauline, similar, reduced above, #(4)5-8; Inflorescence, heads borne singly on peduncles, 22-45 mm.; Heads, (5)7-16 per stem; Involucre, 8 mm. × 15 mm. wide; Phyllaries, 1-2 series (vague what is a series and what not), 6-7 mm. × 2.5-4.0 mm. wide, inner > outer, green, tomentose, margins chartaceous, tips broad; Receptacle, epaleate, flat; Flowers, 1 kind; Disk flowers, corollas, 3.5 mm., yellow; Pappus, crown of scales, 0.8-1.2 mm.; Cypsela, 3-5 mm., hairy all over, more so on the angles. (Described from Coll. No. 1427, 15 June 2016, and Coll. No. 1504, 13 July 2016.)

- Colorado School of Mines Survey Field, Tom Schweich 5/28/2018. East-facing slope with low forbs and grasses in foothills grassland below shrubland; also collected here: Astragalus crassicarpus, Helianthus pumilus, and Heterotheca villosa. Southern part of the Survey Field, high plains at the base of the Rocky Mountain Front Range, 3.16 km. south of the GNIS location of Golden Tom Schweich 2369. 20 Jun 2020. ( CAS COLO CS OBI REGIS ) .

- Deadman Gulch, East-facing grassy slope. Deadman Gulch is often referred to by the locally euphemistic name of “Kinney Run.” High plains between US Hwy 6 and Lookout Mountain, about 145 m. northwest of the Deadman Gulch undercrossing of US Hwy 6, 2.3 km. south of the GNIS location of Golden. Tom Schweich 1427. 15 Jun 2016. ( KHD00063989 UC UCR278000 ) .

- Heritage Square, sandy-loam S-facing slope. 100 yds ENE of archeological dig of Peabody Museum. T R70W S10. Ernest H. Brunquist 97. 1 Jul 1960. ( CS37648 ) .

- Kinney Run, Tom Schweich 7/6/2018. .

- North Table Mountain Park, Lower slopes on the west side of North Table Mountain, along side of North Table Loop, just a few meters north of the access road to the trailhead, 3.2 km. north northwest of the GNIS location of Golden. Tom Schweich 1504. 13 Jul 2016. ( EIU JCOS s.n. KHD00063468 OBI83338 ) .

- North Washington Open Space, In a slightly more exposed area on the south side of the hill where there are fewer non-natives and less disturbance. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1663. 16 Jun 2017. ( CDA50018 KHD00065488 ) .

- South Table Mountain, large patch of Chrysothamnus also present. Survey of Golden Gate Canyon State Park. Colorado native Plant society. South Table Mountain, at base of E. facing shallow gully near Quaker Rd. 13N 0483009E 4400494N. Loraine Yeatts 589. 27 Jun 1983. ( KHD19409 ) . .

Lactuca serriola L.  Prickly Lettuce. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual herb, Stems erect, Leaves basal 0 at flowering, cauline coarsely lobed, margins prickly-toothed, Fruit beak slender, many-ribbed, ~8 adaxial, ~5 abaxial (Described from Collection No. 911, 4 Oct 2012).

- Heritage Square, disturbed open gnd. 2 1/2 mi S of Golden. 13N 0481825E 4396310N. Ernest H. Brunquist 3. 14 Aug 1959. ( CS23942 KHD16980 ) .

- North Table Mountain, Zeise, Larry Steven, 1976 .

- North Table Mountain Park, Growing in cracks in the basalt of the upper flow, plentiful in rocks and in soil below. Introduced. South rim of North Table Mountain, in the Golden Cliffs Trail where it passes through the uppermost basalt flow, 260 m. north of the Golden Cliffs trailhead, 1.5 km. north northeast of the GNIS location of Golden. Tom Schweich 1548. 1 Sep 2016. ( CS EIU JCOS s.n. KHD00064004 ) .

- North Washington Open Space, Determination tentative Tom Schweich 3/27/2017. Large, against neighbor's fence, maybe getting watered with neighbor's landscaping. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1749. 31 Aug 2017. ( CDA JCOS s.n. KHD00065360 ) .

- Ranson/Edwards Homestead Open Space Park, Dense colony of small plants in dried wetland, with Iris missouriensis and Epilobium sp.. High plains above Rocky Flats, 19.4 km. north northwest of the GNIS location of Golden, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. north on Plainview Road, then 150 m. west into open prairie. Tom Schweich 2200. 27 Aug 2019. ( JCOS s.n. KHD OBI UCR ) .

- South Table Mountain, In gravel at edge of roadbed. South Table Mountain. 13N 0484200E 4399600N. Loraine Yeatts 774. 9 Aug 1983. ( COLO00100529 KHD19405 ) . .

Liatris ligulistylis (A. Nelson) K. Schum.  Northern Plains Gayfeather. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lookout Mountain Park, Lookout Mt Park Ellsworth Bethel 18 Sep 1915. ( CS20125 ) . .

Liatris punctata Hook.  Dotted Blazing Star. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 32 cm.; Leaves, cauline, alternate, 78 mm. × 3.5 mm. wide, gradually reduced above, linear, glandular punctate, margins, entire, revolute, sparsely hairy; Inflorescence, single heads in axils on short pedicels; Involucre, 16 mm. × 7 mm. wide, ±cylindrical; Phyllaries, in 2+ series, inbricate, 14 mm. × 3.8 mm. wide, glandular-punctate abaxially distally, margin, ciliate, scarious, tip acute; Receptacle, epaleate; Flowers, one kind; Disk flowers; Corolla, tube white 8 mm. + lobes purple 2.5 mm.; Pappus, bristles, one series, 10 mm., plumose; Cypsela, 7 mm., hairy. Described from Coll. No. 1264, 29 Jul 2015.

- Apex Park - Northern Parcel, Foothills grassland, with both foothills and riparian shrubland nearby, open southeast-facing slope with Heterotheca villosa, and Hesperostipa comata. East-central corner of park where multiple unnamed gulches join before flowing through Stonebridge HOA, 4.44 km. south of the GNIS location of Golden. Tom Schweich 2428. 19 Aug 2020. ( CAS CDA JCOS s.n. UCR ) .

- Golden, LOWER MONTANE, ROADSIDE EMBANKMENT, SOIL DRY AND ROCKY. Donor: Herbarium, University of Colorado, Denver Center HWY 6 & 58, Golden. 13 0479810E 4400337N. Cynthia Shephers 9. 23 Sep 1977. ( KHD40961 ) LOWER MONTANE, ALONG ROADSIDE. Donor: Herbarium, University of Colorado, Denver Center JUNCTION OF #6 AND #58, W OF GOLDEN. 13N 0479810E 4400337N. L Harvill 14. 20 Sep 1977. ( KHD40960 ) United States of America, Colorado, Golden N. L. Britton 8 Oct 1882. ( NY3043812 ) .

- Golden Reservoir, SE-facing slope, sandy soil. Lariat Loop Rd., 1 mi. NW of I-70, 1/4 mi. SW of Golden Reservoir, SW of Golden. T4S R70W S5. J. Hutchison 16. 1 Sep 1996. ( CS82049 ) .

- Heritage Square, Open grassy field. 2.5 mi S of Golden. T R70W S10. Ernest H. Brunquist 49. 25 Aug 1959. ( CS23934 ) .

- Lippincott Property, Drier rocky knoll at edge of ponderosa pine woodland. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, north segment of parcel, south side of Bull Gulch, 22.9 km. north northwest of the GNIS location of Golden. Tom Schweich 2220. 29 Aug 2019. ( CIBO JCOS s.n. KHD OBI REGIS ) .

- Lookout Mountain, Dry rocky timber. Golden: Lookout Mountain. Ira W. Clokey 2652. 18 Sep 1915. ( RM491886 ) Above Golden. Mrs. Ella Bailar 1905. ( COLO00103143 ) .

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Mixed grasses and forbs. Lower north slopes of North Table Mountain, along the Tablerock Trail, 1.0 km. south of the Mesa Spur trailhead on W. 58th Avenue, 4.2 km. north northwest of the GNIS location of Golden. Tom Schweich 1536. 18 Aug 2016. ( COLO02348639 CS EIU JCOS s.n. KHD00063460 OBI83314 ) Grassy gentle slope, this plant is an early bloomer among its species here. Northwest corner of North Table Mountain, lower elevation lobe of the mesa, formed on top of the oldest basalt flow embedded in the Denver Formation, 3.1 km. north of the GNIS location of Golden. Tom Schweich 1736. 15 Aug 2017. ( JCOS s.n. KHD00065321 UCR ) .

- North Washington Open Space, Tom Schweich 3/27/2017. Northeast section, in deep grasses (mostly smooth brome) and other weeds. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1747. 31 Aug 2017. ( CAS KHD00065355 ) .

- Ranson/Edwards Homestead Open Space Park, Koeleria macrantha, Hesperostipa comata, Andropogon gerardii, Muhlenbergia montana, Elymus canadensis, Heterotheca villosa, Artemisia frigida, Artemisia ludoviciana, Artemisia campestris, Psoralidum tenuiflorum, Opuntia phaecantha, Grindelia squarrosa United States, Colorado, Jefferson, Take Hwy 93 north 8 miles from Golden, CO; take Hwy 72 west for 3 miles to Plainview Rd; turn right(north); drive 100 yards and park. Plants are on east side of road in large open meadow of Jeffco Open Space. Denise Wilson 25 Nov 2012. ( CHIC17892 ) [ Coordinates are in Jefferson County Open Space, written location description is likely in Boulder Mountain Park and Open Space. ] High plains above Rocky Flats, 15.8 km north northeast of Golden, 1.4 miles north of CO State Highway 72 on Plainview Road, 150 m. northeast of Plainview Road. Tom Schweich 1264. 29 Jul 2015. ( JCOS s.n. KHD56976 UC ) .

- South Table Mountain, Widespread and common on lava pavement. South Table Mountain. 13N 0484200E 4399700N. Loraine Yeatts 824. 29 Aug 1983. ( COLO00102848 KHD19404 ) . .

Lygodesmia juncea (Pursh) D. Don ex Hooker.  Rush Skeletonplant. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Zeise, Larry Steven, 1976 .

- South Table Mountain, On steep clay slope. Jefferson County, Colorado, USA. S. Table Mt. On west side of Quaker road. UTM: 99308426. Loraine Yeatts 773. 7 Aug 1983. ( COLO00106021 ) . [ One of two collections numbered #773, the other being Stephanomeria pauciflora. ] .

Mulgedium pulchellum (Pursh) G. Don in R. Sweet.  (Syn: Lactuca tatarica (L.) C.A.Mey. , Lactuca tatarica (L.) C.A.Mey. var. pulchella (Pursh) Breitung ) Blue Lettuce. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, NW of Golden Brick Yards, Golden. Unknown 3 Jun 1934. ( CS48176 CS48177 ) . .

Nothocalais cuspidata (Pursh) Greene.  Prairie False Dandelion. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, Among grasses below foothills shrubland; collected nearby: Chorispora tenella, Prunus virginiana, Antennaria parvifolia, and Senecio integerrimus. There were no N. cuspidata to be found in the nearby infestation of smooth brome. Along the eastern edge of the Apex Park - North parcel, small, north-facing ridge, 75 m. north of the water tank, 4.81 km. south of the GNIS location of Golden. Tom Schweich 2283. 18 May 2020. ( COLO JCOS s.n. KHD ) .

- Colorado School of Mines Survey Field, Distributed broadly across upper surface of small alluvial hill, near the center of the Survey Field, 2.22 km, south of the GNIS location of Golden. Tom Schweich 1791. 24 Apr 2018. ( CAS KHD00068681 OBI124856 UCR ) .

- Lippincott Property, Common, widely scattered. Tom Schweich, with Irene Weber 4/24/2019. .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, “Wavy-leaved dandelion,” open prairie on top of mesa, common. Beside North Table Loop, just south of intersection with Tilting Mesa Trail. Tom Schweich 1095. 30 Apr 2015. ( JCOS s.n. KHD56903 UC2045768 ) .

- South Table Mountain, S. facing slope; locally common in meadows; clay soil of volcanic origin. S. Table Mt. W. of Quaker rd. UTM: 842992 Loraine Yeatts 473. 9 May 1983. ( COLO 00110056 ) On flats. South Table Mountain; Flats west of Quaker Rd. above gate. 13N 0484300E 4399500N. Loraine Yeatts 575. 1 Jun 1983. ( KHD19401 ) .

- Tin Cup Ridge, mixe talus and soil, only one seen in bloom. Tom Schweich 4/30/2020. . .

Packera fendleri (A. Gray) W.A. Weber & Á. Löve.  (Syn: Senecio fendleri A. Gray ) Fendler"s Ragwort. CalPhotos. Jepson eFlora. SEINet Taxon.

- Deadman Gulch, Northeast-facing slope, more open stoney ground, on what appears to be a southeast to northwest trend approximating the trend of Eagle Ridge to the southeast. Above the watercourse locally named “Kinney Run,” between US Highway 6 and Eagle Ridge Drive, 110 m. northwest of Kinney Run Trail, 3.17 km. south of the GNIS location of Golden. Tom Schweich 2044. 2 Jun 2019. ( COLO KHD OBI UCR ) .

- Golden, Dry Hills. Golden, CO. 13N 0481041E 4400338N. I. W. Clokey 4395. 9 Jun 1921. ( KHD3574 RM492395 RM492396 ) .

- Little Scraggy Peak, Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 46.5 km. south of the GNIS location of Golden. Tom Schweich 1902. 31 May 2018. ( CAS KHD00068679 OBI ) .

- North Table Mountain, as Senecio fendleri Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, North Table Mountain Mark Duff 83. 20 Jun 1992. ( COLO00114801 ) .

- North Washington Open Space, Tom Schweich 5/12/2020. Near social trail just west of the top of hill. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1817. 12 May 2018. ( KHD00068678 ) .

- South Table Mountain, On south-facing slope. Golden, South Table Mountain; south-facing slope above Golden Hills Road. 13N 0484200E 4399200N. Loraine Yeatts 491. 16 May 1983. ( KHD19482 ) Basalt flow in Denver Formation, common on s. facing slope. S. Table Mt., a lava capped mesa, near mesa top. UTM: 840997 Mary E. Edwards 415. 1 Jun 1983. ( COLO 00114918 ) . .

Packera plattensis (Nuttall) W. A. Weber & Á. Löve.  (Syn: Senecio plattensis (Packera) Nutt. ) Prairie Groundsel. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, 14 cm., from taprooted caudix, sap not milky; Stem, light green, tomentose, densely so in axils; Leaves, mostly basal and few cauline, alternate, petiole 8 mm., blade 10 mm. × 5 mm. wide, oblanceolate, surface, upper thinly tomentose, lower moderately tomentose, especially the mid-vein, margin, crenulate; Inflorescence, head enclosed by involucre, showy; Heads, #10, pedicels, 12 mm.; Involucre, 7 mm. × 5-6 mm. wide, thinly tomentose; Phyllaries, equal, in 1 series, 5 mm. × 0.7 mm. wide, green, flat; Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, #10, tube 3 mm. + blade 7 mm., yellow, fertile; Disc flowers, many, tube 4 mm. + lobes 0.5 mm., yellow; Pappus, many, well-developed, bristles, 4 mm., ±equal, Style, 2-branched; Fruit, 1 mm., green, beak-less, glabrous. (Described from Coll. No. 1817, 12 May 2018).

- Lippincott Property, South margin of a small meadow in saddle between hogback and flatiron, quite wet from runoff of the meadow. Northernmost Jefferson County, parcel jointly owned by City of Boulder and Jefferson County Open Space, approximate centroid of parcel, 22.4 km. north northwest of the GNIS location of Golden. Tom Schweich 2064. 6 Jun 2019. ( CAS CIBO JCOS s.n. KHD ) South-facing slope with grasses and forbs. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, narrows of the parcel between central and southeast portions, 21.8 km. north northwest of the GNIS location of Golden. Tom Schweich 2085. 17 Jun 2019. ( CAS CIBO JCOS s.n. KHD ) .

- North Table Mountain, Zeise, Larry Steven, 1976 .

- Ranson/Edwards Homestead Open Space Park, Drier southeast-facing slope. 1.7 mi. west on CO Highway 72 Coal Creek Canyon Road from CO Highway 93, 1 mi. generally north on Plainview Road, then 60 m. east into field. Tom Schweich 1914. 3 Jun 2018. ( CAS JCOS s.n. KHD00068680 UC ) . .

Packera tridenticulata (Rydb.) W.A. Weber & Á. Löve.  (Syn: Senecio tridenticulatus Rydb. ) Three-Tooth Ragwort. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, to 25 cm., densely tomentose below, thinning above; Leaves, mostly basal, petiole 40 mm. + blade 24 mm. × 7 mm. wide, sparsely shallowly toothed, few cauline, tomentose in the axils, petiole 20 mm. + blade 24 mm. × 4 mm. wide, sparsely shallowly toothed, a few are 3-lobed at tip; Inflorescence, corymbiform, heads #12±, flowers of 2 kinds; Involucre, 6 mm. × 11 mm. wide, bowl-shaped; Phyllaries, 1 series (with little overlap), 4 mm. × 1.2 mm. wide, mostly green, 2+ veins, 1 margin chartaceous; Receptacle, epaleate; Rays, #11±, fertile, tube 2.5 mm. + blade 5.5 mm. × 2 mm. wide, yellow; Disc flowers, yellow; Pappus, capillary bristles, 4.5 mm.; Cypsela, 2.5 mm., glabrous. Described from Coll. No. 1643, 30 May 2017.

- Golden, Abundant. Impressive display. SE corner of 68th St. and Hwy 93, Golden. 13N 0481144E 4400434N. Louise Wildeman 9 Jun 2005. ( KHD10531 ) .

- North Washington Open Space, Top of hill, among most intact area of native vegetation. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1643. 30 May 2017. ( CS KHD00065490 ) . .

Pericome caudata A. Gray.  Mountain Tail-Leaf. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lippincott Property, Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, among boulders on the south side of Bull Gulch, 22.9 km. north northwest of the GNIS location of Golden. Tom Schweich 2212. 29 Aug 2019. ( CIBO JCOS s.n. KHD OBI REGIS ) . .

Picradeniopsis oppositifolia (Nutt.) Rydb. ex Britton.  (Syn: Bahia oppositifolia (Nutt.) A. Gray ) Opposite Leaf Bahia. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Gravelly hillsides. Foothills near Golden. H. N. Patterson 71. 2 Jul 1885. ( COLO 00120444 NY1923126 ) .

- South Table Mountain, Level area which catches water. South Table Mountain; along old road on Jefferson County open space land. 13N 0486260E 4399900N. Mary E. Edwards 395. 1 Jul 1983. ( COLO00120311 KHD19705 ) . .

Prenanthes racemosa Michx.  (Syn: Nabalus racemosus (Michx.) Hook. , Prenanthes racemosa Michx. var. multiflora (Cronquist) Dorn ) Purple Rattlesnake Root. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Ellsworth Bethel 22 Aug 1906. ( CS23267 ) .

- Lookout Mountain, Lookout Mt Park. Ellsworth Bethel 31 Aug 1915. ( CS23268 ) Lookout Mountain. William Huestis 2 Aug 1916. ( COLO00121137 ) . .

Pseudognaphalium canescens (DC.) Anderberg.  (Syn: P. canescens (DC.) W. A. Weber [illeg.] ) Wright's Rabbit-Tobacco.. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, to 25 cm.; Leaves, alternate, petiole 16 mm. + blade 30 mm. × 10 mm. wide, tomentose (slightly less so adaxially), sessile glandular beneath the tomentum; Inflorescence, terminal and axial on leafy stems; Phyllaries, 3 series, 3.7 mm. × 1 mm. wide, green center, mostly scarious, innermost glabrous; Receptacle, epaleate, flat; Flowers, 2 kinds (heads disciform); Rays, small, inconspicuous, sterile; Disk flowers, corolla, 2 mm., yellow; Pappus, capillary bristles, >corollas. (Described from Coll. No. 1549, 1 Sep 2016.)

- Golden, The plant grows out of a crack between the sidewalk and a wall. City of Golden: Just east of 1010 9th St. 13N 0480555E 4400715N. Stanley Smookler 350. 10 Aug 2002. ( COLO 00837567 KHD40080 ) .

- North Table Mountain Park, Growing in cracks in the basalt of the upper flow, very few seen. South rim of North Table Mountain, in the Golden Cliffs Trail where it passes through the uppermost basalt flow, 260 m. north of the Golden Cliffs trailhead, 1.5 km. north northeast of the GNIS location of Golden. Tom Schweich 1549. 1 Sep 2016. ( KHD00064001 ) . .

Pseudognaphalium macounii (Greene) Kartesz.  Macoun’s Rabbit-Tobacco. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual (?) to 45 cm.; Leaves, cauline, alternate, 40 mm. × 4 mm. wide, decurrent, lance-linear, entire, stalked glandular, tomentose abaxially; Inflorescence, branched axial and terminal; Heads in tight clusters, disciform; Involucre, 4 mm.; Receptacle, epaleate; Phyllaries in 4+ series, hyaline; Pappus, bristles. Described from Coll. No. 1257, 26 Jul 2015.

- Lookout Mountain Nature Center, Open Ponderosa forest, growing in patches, loacally common. Few plants., Jefferson County Nature Center, open Ponderosa forest. 13N 0478695E 4397078N. Stanley Smookler 5. 26 Aug 1986. ( KHD27038 ) . [ Per FNANM, “Reports of Pseudognaphalium viscosum from the flora for states other than Texas are based on plants of P. macounii.” ]

- Ranson/Edwards Homestead Open Space Park, Gentle south-facing slope away from intermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 260 m. west of Plainview Road. Tom Schweich 1257. 26 Jul 2015. ( JCOS s.n. KHD56977 UCR267470 ) . .

Ratibida columnifera (Nutt.) Woot. & Standl.  (Syn: Rudbeckia columnifera Nutt. ) Upright Prairie Coneflower. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 50 cm., tap-rooted; Leaves, cauline, to 11 cm. × 3 cm. wide, 1-pinnate, pinnae to 39 mm. × 4 mm. wide, some toothed; Inflorescence, single heads per stem, >> leaves; Involucre, 14 mm. diameter; Phyllaries, 1 series, lanceolate, hairy abaxially; Receptacle, cylindric, paleate; Rays, #5, 17 mm., × 13 mm. wide, elliptic-ovate, sterile, corolla yellow; Disk, cylindric, 20-45 mm. × 9-12 mm. wide; Palea, folded around but not enclosing disk flowers; Disk flowers, many, corolla greenish-yellow; Pappus, short crown of scales; Fruit, compressed, but maybe not strongly, ciliate adaxially(!). Described from Coll. No. 1198, 12 July 2015.

- Colorado School of Mines Survey Field, Highest plains at the base of Lookout Mountain. Northern portion of the Survey Field, near the road to city water tank from Lookout Mountain Road, 1.95 km south southeast of the GNIS location of Golden Tom Schweich 1198. 12 Jul 2015. ( KHD56979 OBI83170 UC UCR267678 ) .

- Golden, Plains. At base of Lookout Mt., Golden. J. H. Ehlers 8114. 5 Jul 1914. ( COLO00124321 ) Roadside. Junction of Hwy 6 and Hwy 58, west of Golden, CO. 13N 0479779E 4400334N. Janet L. Wingate 62. 17 Jul 1978. ( KHD444 ) .

- Kinney Run, West slope of the hogback on the east side of Kinney Run, between the Cambria Lime Kiln and Tripp Ranch, 3.19 km. south southeast of the GNIS location of Golden. Tom Schweich 1966. 6 Jul 2018. ( COLO02348597 KHD00068677 OBI UC ) .

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Top of North Table Mountain, base of north-facing rocky slope (fault scarp?) above pond, 3.3 km. north northeast of the GNIS location of Golden. Tom Schweich 1496. 13 Jul 2016. ( COLO2299725 CS EIU JCOS s.n. KHD00063466 ) .

- North Washington Open Space, Southeast corner of parcel, between social trails. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1702. 14 Jul 2017. ( CAS CDA KHD00065461 ) .

- Ranson/Edwards Homestead Open Space Park, Hillside on highest prairie just below ponderosa pine woodland. Northern part of open space, 1.6 mi. west on CO Highway 72 from CO Highway 93, north 1.9 mi. on Plainview Road, then 300 m. northeast, almost to the boundary fence; 16.3 km. north northwest of the GNIS location of Golden. Tom Schweich 1514. 24 Jul 2016. ( EIU JCOS s.n. KHD00063459 OBI83334 UC ) .

- South Table Mountain, On S. facing clay slope below mesa edge. S. Table Mt. W of Quaker rd. UTM: 842992. Loraine Yeatts 625. 3 Jul 1983. ( COLO00124297 ) South Table Mountain; east side of Quaker Road near Golden Hills road. 13N 0484200E 4398900N. Loraine Yeatts 679. 11 Jul 1983. ( BRY264320 KHD19397 ) .

- White Ash Mine Park, On disturbed ground bordering the park path. A common erect herb., White Ash Park in Golden, CO, near base of foothills, west of Colo Hwy 93 and north of Colo Hwy 58. Access is by foot via the Golden trail, an urban trail within City of Golden, with its trailhead at 8th St. west of Cheyenne St; bordering park path. Stanley Smookler 240. 23 Sep 2001. ( KHD38242 ) . .

Scorzonera laciniata L.  (Syn: Podospermum laciniatum (L.) De Candolle ) Cutleaf Vipergrass. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 40 cm., Leaves, basal and cauline, 7-20 cm., pinnately dissected into near-linear lobes, reduced but still well-developed above; Inflorescence, few heads on long stems; Phyllaries, in ±3 series, graduated, 4-13 mm. × 1.5-9 mm. wide, margins chartaceous, tips dark; Receptacle, epaleate; Flowers, ligulate (1 kind, 5-lobed), corolla yellow; Pappus of plumose bristles, Introduced, Europe (Old French: viper) (Described from Coll. No. 1399, 8 June 2016).

- Apex Park - Northern Parcel, Also seen or collected nearby: Juniperus scopulorum, Eriogonum alatum, Turritis glabra, Physalis hederifolia, and Erigeron tracyi. Northernmost quadrant of the parcel, steep slope part way up the initial Front Range scarp, shaded spot between junipers, beside a small trickle of water from a spring, 4.03 km. south of the GNIS location of Golden Tom Schweich 2299. 26 May 2020. ( JCOS s.n. UCR ) .

- Clear Creek Canyon, Just outside Golden (west) on US 6. 13N 0481975E 4397741N. Berta Anderson 898. 24 May 1977. ( KHD26294 ) .

- Lippincott Property, Trampled by vehicles and eaten by cows. Also collected in this junction: Capsella bursa-pastoris, Collinsia parviflora, and Draba nemorosa, with Taraxacum officinale nearby. Northernmost Jefferson County, jointly owned by City of Boulder OSMP and Jefferson County Open Space, approximate centroid of parcel, in the junction of the ranch road and quarry road, 22.0 km. north northwest of the GNIS location of Golden. Tom Schweich 2164. 21 Jul 2019. ( CIBO JCOS s.n. KHD OBI ) .

- North Table Mountain, as Podospermum l. Kilburn, Paul D., and Sally L. White, 1992 Disturbed trailside with grasses and Tragopogon dubius. Southwest side of North Table Mountain, along City of Golden North Table Mountain Trail, 2.2 km. north of the GNIS location of Golden. Tom Schweich 1399. 8 Jun 2016. ( JCOS s.n. KHD00063987 ) .

- North Washington Open Space, Tom Schweich 3/27/2017. Western section of parcel, which has possibly been revegetated after adjacent home construction. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1623. 15 May 2017. ( CDA KHD00065498 ) .

- South Table Mountain, South Table Mountain; west side of Quaker Road on east facing roadcut. 13N 0484300E 4398200N. Loraine Yeatts 509. 5/24/1983. ( BRY0115671 COLO00121087 KHD19396 ) Mesatop meadow, abundant and widespread. S Table Mt, near Quaker Rd gate. Mary E. Edwards 1 Jun 1984. ( CS81499 ) . .

Senecio eremophilus Richardson var. kingii (Rydb.) Greenm.  CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain Park, North Table Mountain. Mark Duff 179. 20 Jun 1992. ( COLO00128652 ) . .

Senecio integerrimus Nutt.  Columbia Ragwort. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, Mixed grass and foothill shrubland, around the edge of a thicket of Prunus americana and Rhus trilobata. Cynoglossum officinale also here. Along the eastern edge of the Apex Park - North parcel, in a little bowl, 4.70 km. south of the GNIS location of Golden. Tom Schweich 2281. 18 May 2020. ( CDA JCOS s.n. KHD REGIS ) .

- Colorado School of Mines Survey Field, North-facing slope, above a small stream. Southwestern part of Survey Field, lowest slopes of Lookout Mountain (Rocky Mountain Front Range), 2.56 km. south southwest of the GNIS location of Golden. Tom Schweich 1637. 25 May 2017. ( CDA CS EIU KHD00065493 ) Growing in deep grasses and forbs at the base of tall shrubs. Base of the Rocky Mountain Front Range, northeast-facing slope, above an unnamed stream in the south end of the Survey Field, 2.51 km. south of the GNIS location of Golden. Tom Schweich 1897. 28 May 2018. ( COLO02347573 CS ) .

- Golden, Golden, CO. 13N 0481105E 4400440N. Will C. Ferril 16 May 1901. ( KHD17267 ) .

- Lippincott Property, Deep forest litter in cracks of ridge bedrock. Jointly owned by City of Boulder OSMP and Jefferson County Open Space, near the northern edge of the property and the Boulder County boundary, east side of ridge, 25.6 km. north northwest of the GNIS location of Golden. Tom Schweich 2029. 26 May 2019. ( CIBO JCOS s.n. KHD ) Ponderosa pine woodland where the highest Great Plains meets the Rocky Mountain Front Range, parcel disturbed by cattle grazing and clay mining. Northernmost Jefferson County, parcel jointly owned by City of Boulder and Jefferson County Open Space, approximate centroid of parcel, 22 km. north northwest of the GNIS location of Golden. Tom Schweich 2059. 6 Jun 2019. ( CIBO COLO CS JCOS s.n. KHD REGIS ) .

- Lookout Mountain, In dry, rocky ponderosa pine forest. Transferred from USGS Herbarium, Denver, CO (2005). Lariat Trail, Lookout Mountain. Hansford T. Shacklette 6676. 19 May 1962. ( COLO00858126 COLO00858142 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Numerous plants among short grasses and forbs. Variety exaltatus (Nutt.) Cronquist if infraspecific names are to be applied. Lowest north slopes of North Table Mountain, on a small flat that appears to be a landslide run-out, 4.8 km. north northeast of the GNIS location of Golden. Tom Schweich 1811. 10 May 2018. ( CDA JCOS s.n. KHD00068673 UC ) .

- North Washington Open Space, Just a few plants on the eastern slope, in dense smooth brome. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.73 km. north northeast of the GNIS location of Golden. Tom Schweich 1847. 18 May 2018. ( KHD00068675 ) .

- Ranson/Edwards Homestead Open Space Park, Moderate north slope, deep grass with Astragalus agrestis. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 300 m. northeast to the general vicinity of the old homestead, about 15.8 km. north of the GNIS location of Golden. Tom Schweich 1831. 17 May 2018. ( COLO02347607 JCOS s.n. KHD00068674 UCR ) .

- South Table Mountain, On east-facing hill. South Table Mountain; on east slope of hill 6020, northwest of junction of Quaker & Golden Hills Roads. 13N 0484200E 4398900N. Loraine Yeatts 510. 24 May 1983. ( KHD19481 ) A lava capped mesa, basalt flow in Denver formation. Damp area on gentle slope S. of pond; occasional with Symphorcarpos and Rosa sp. S. Table Mt. UTM: 835997. Mary E. Edwards 418. 1 Jun 1983. ( COLO 00129890 ) .

- Tin Cup Ridge, East across US Highway 40 from the Peabody Museum dig at Magic Mountain, which was collected by E. H. Brunquist (1959). In shrubby vegetation along the top of Tin Cup Ridge, the northward extension of Dakota Ridge into Golden, 4.58 km south southeast of the GNIS location of Golden. Tom Schweich 1108. 14 May 2015. ( CAS KHD56932 OBI82130 UC UCR266078 ) Open grassland. Lower east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.77 km. south southeast of the GNIS location of Golden. Tom Schweich 1858. 23 May 2018. ( CS EIU JCOS s.n. KHD00068676 OBI UCR ) .

- Windy Saddle Park, Tom Schweich 5/4/2020. . .

Senecio riddellii (Torr. & A. Gray) Greenm. ex L.O. Williams.  Riddell's Ragwort. CalPhotos. Jepson eFlora. SEINet Taxon.

- Heritage Square, open gnd ca 2 1/2 mi S of Golden. T R70W S10. Ernest H. Brunquist 41. 24 Aug 1959. ( CS23861 ) . .

Senecio spartioides Torr. & A. Gray.  (Syn: Senecio multicapitatus Greenm. ex Rydb. ) Broomlike Ragwort. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 50 cm.; Leaves, basal, unknown, cauline, alternate, 90 mm. × 3 mm. wide, narrowly oblanceolate, reduced above to 30 mm. × 1 mm. wide, variously hairy in axils and ±lower surface; Involucre, 12.5 mm. × 6 mm., narrowly campanulate, bractlets not prominent; Phyllaries, 2 series? or 1 series with 2 forms? outer, 7.5 mm. × 0.7 mm. wide, all green, inner, 7.5 mm. × 1.3 mm. wide, centrally green with margins chartaceous, all tips dark; Receptacle, epaleate; Rays, fertile, corolla, tube 5 mm. + blade 9 mm. × 2 mm. wide, yellow, lobes 3; Disk flowers, corolla, 6 mm., yellow; Pappus, 1 series of fine capillary bristles, 5 mm.; Cypsela, 4 mm., 5-angled, dark gray, “hirtellous” throughout (not just the angles). Described from Coll. No. 1298, 23 Sep 2015.

- Apex Park - Northern Parcel, Flowers not open. Tom Schweich 8/19/2020. .

- Golden, United States of America, Colorado, Golden N. L. Britton 8 Oct 1882. ( NY3088845 ) .

- Lippincott Property, Also collected here: Grindelia squarrosa, Heterotheca foliosa, Pericome caudata, Nepeta cataria, and Urtica dioica. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, among boulders on the south side of Bull Gulch, 22.9 km. north northwest of the GNIS location of Golden. Tom Schweich 2216. 29 Aug 2019. ( CAS CIBO JCOS s.n. KHD UCR ) .

- Little Scraggy Peak, Also collected nearby: Jamesia americana, Solidago nana, and Arctostaphylos uva-ursi. Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 1.70 km. southwest of the Little Scraggy trailhead, 60.1 km. south of the GNIS location of Golden. Tom Schweich 2237. 16 Sep 2019. ( CDA KHD OBI UCR ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Zeise, Larry Steven, 1976 .

- North Table Mountain Park, Mixed grasses, forbs and small shrubs. lower north slopes of North Table Mountain, 0.73 km. south southeast of the Mesa Spur trailhead on W. 58th Avenue, 4.5 km. north northeast of the GNIS location of Golden. Tom Schweich 1538. 18 Aug 2016. ( JCOS s.n. KHD00063457 ) Growing next to Coll. No. 1319, Ribes aureum, 4 May 2016. Middle elevation south slopes of North Table Mountain, along Golden Cliffs trail, 84 m. northeast of the Golden Cliffs trailhead, 1.4 km. northeast of the GNIS location of Golden. Tom Schweich 1545. 1 Sep 2016. ( CS EIU JCOS s.n. KHD00063967 OBI83344 ) .

- North Washington Open Space, Near top of hill, in some of the least-disturbed native vegetation. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1755. 31 Aug 2017. ( CAS CDA KHD00065160 ) Remnant mixed-grass prairie, also collected nearby: Hymenopappus filifolius, Oxytropis lambertii, Eriogonum effusum and Carex inops var. heliophila. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 2.31 km. north northwest of the GNIS location of Golden. Near top of hill, central part of the parcel. Tom Schweich 2231. 12 Sep 2019. ( COLO CS EIU REGIS ) .

- Ranson/Edwards Homestead Open Space Park, Not often seen at Ranson/Edwards; these growing among grasses and fallen, burned ponderosa pines. Northwest corner of the Ranson/Edwards parcel, 1.7 mi. west on CO Highway 72 Coal Creek Canyon Road from CO Highway 93, 2.3 mi. north on Plainview Road, then 40 m. west, 16.3 km. north northwest of the GNIS location of Golden. Tom Schweich 1564. 8 Sep 2016. ( COLO02348431 JCOS s.n. KHD00063994 UC ) High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.1 mi. north on Plainview Road, then 925 m. west on a small ridge, 19.9 km. north northwest of the GNIS location of Golden. Tom Schweich 2209. 27 Aug 2019. ( OBI REGIS ) .

- South Table Mountain, South-facing slope below mesa edge. South Table Mountain; below mesa edge, west of Quaker Road. 13N 0484200E 4399200N. Loraine Yeatts 833. 9 Sep 1983. ( KHD19480 ) .

- Tin Cup Ridge, Among rocks along the top of Tin Cup Ridge, the northern extension of Dakota Ridge into Golden, 4.7 km south southeast of the GNIS location of Golden. Tom Schweich 1298. 23 Sep 2015. ( JCOS s.n. KHD56980 UC UCR267491 ) . .

Senecio wootonii Greene.  Wooton's Ragwort. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Golden, Foothills north of Golden, CO. 13N 0481338E 4401747N. Helen Marsh Zeiner 5610. 24 May 1919. ( KHD4279 ) . .

Solidago L.  Goldenrod. CalPhotos. Jepson eFlora. SEINet Taxon.

- Little Scraggy Peak, Tom Schweich 7/23/2019. . .

Solidago canadensis L.  Canada Goldenrod. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Golden. Flower garden. J. H. Ehlers 8337. 15 Sep 1941. ( COLO00134510 MICH1006071 ) .

- South Table Mountain, In ditch, roadside. South Table Mountain, along Quaker Road. 13N 0484300E 4399100N. Loraine Yeatts 818. 29 Aug 1983. ( KHD19478 ) . .

Solidago gigantea Aiton.  Giant Goldenrod. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, 60 cm. (growing on a steep stream bank); Stem, glabrous, becoming hairy in the inflorescence; Leaves, basal unknown, cauline, alternate, petiole, 5 mm. or subsessile, blade, 90 mm. × 15 mm. wide, distally reduced in size but abundant, lanceolate-elliptic, entire, ciliate with small curved hairs, distally widely-spaced serrate; Inflorescence, pyramidal, paniculate, ±secund; Peduncles, 3-5 mm.; Involucre, 3 mm. × 4 mm. wide, spheric(?), lightly glandular; Phyllaries, unequal, 2+ series, lower <rest of involucre, green to chartaceous, margins flat; Receptacle, very short scales(?), definitely not flat; Flowers, of 2 kinds; Rays, #11, tube 2 mm. + blade 1.5 mm. × 0.3 mm. wide, yellow, fertile; Disk flowers, #7 tube 2.8 mm. + lobes 0.9 mm., throat expanding gradually, yellow, open, bisexual; Pappus, bristles, 2.8 mm., equal; Stamens, not tailed; Style, 2-branched, ±brushlike appendages; Stigma, 0.5 mm., >style appendages (0.4 mm.); Fruit, 1 mm., hairy, beak-less (Described from Coll. No. 2422, 17 Aug 2020).

- Apex Gulch, wet soil. by Apex Ck, ca 1 mi W by SW of archeological project of Peabody Museum. T R70W S10. D Newton & Ernest H. Brunquist 134. 4 Aug 1960. ( CS38186 KHD17525 ) .

- Deadman Gulch, Inflorescence full of little crab spiders colored the same yellow as the corollas. In Deadman Gulch (Kinney Run) between US Highway 6 and Eagle Ridge Drive, on the edge of the perennial creek, around the retention pond, and further upstream along the creek, 3.17 km. south of the GNIS location of Golden. Tom Schweich 2422. 17 Aug 2020. ( COLO KHD OBI UCR ) .

- Ranson/Edwards Homestead Open Space Park, In deep grassland with few ponderosa pines, also collected nearby: Antennaria rosea, Townsendia hookeri, Noccaea fendleri, and Frasera speciosa, High plains above Rocky Flats, northwest corner of Ranson/Edwards, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 2.1 mi generally north on Plainview Road, then 200 m. west. Tom Schweich 2227. 10 Sep 2019. ( JCOS s.n. KHD ) . .

Solidago missouriensis Nutt.  Missouri Goldenrod. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 35-40 cm., generally glabrous throughout; Leaves, basal, unknown, cauline, alternate, petiole 10-45 cm. + blade 100 mm. × 21-22 mm. wide, reduced above, oblanceolate, margin, sparsely scabrous proximally, serrate distally, glabrous, prominently 3(5)-nerved; Inflorescence, crowded panicle; Pedicels, 1 mm.; Bracts, #2, 1.8 mm.; Involucre, 3.0-4.5 mm. × 3-5 mm. wide, obconic; Phyllaries, 2+ series, 2.2-3.5 mm. × 1 mm. wide, graduated, green, margin chartaceous, veins 1; Receptacle, epaleate, conic; Flowers, 2 kinds; Rays, #12, fertile, tube 2 mm. + blade 2.2 mm., yellow; Disk flower, #12, tube 2.8 mm. + lobes 0.7 mm. = 3.5 mm., yellow; Pappus, capillary bristles, 3.0 mm.; Cypsela, 0.4-0.6 mm., glabrous-sparsely hairy. Described from Coll. No. 1255, 26 Jul 2015, and Coll. No. 1519, 29 Jul 2016. Distinguished in part by its glabrous characters and presence of 3 prominent nerves on leaves. Jepson eFlora notes that S. missouriensis Nutt. Is misapplied to S. spectabilis (D. C. Eaton) A. Gray. FNANM states that, in the west, it can be similar to smaller plants of S. spectabilis (13 Sep 2014).

- Apex Park - Northern Parcel, Patch about 15 m. across. Tom Schweich 8/19/2020. .

- Kinney Run, West slope of the hogback on the east side of Kinney Run, between the Cambria Lime Kiln and Tripp Ranch, 3.12 km. south southeast of the GNIS location of Golden. Tom Schweich 1969. 6 Jul 2018. ( COLO02348555 KHD00068671 OBI ) .

- Mount Falcon Park, USA, Colorado, Jefferson County, Jefferson Co. Mount Falcon Park Robert Merrill King and Robert M. Garvey 10965. 7 Jul 1999. ( CS83594 ) .

- North Table Mountain Park, Trailside in small outcrop of rocks. Lower east slopes of North Table Mountain, along the North Table Loop north of the Mesa Top Trail, 1.2 km. northwest of the Easley Road trailhead; 4.32 km. northeast of the GNIS location of Golden. Tom Schweich 1519. 29 Jul 2016. ( COLO02347953 EIU JCOS s.n. KHD00063458 OBI83316 ) With Bromus inermis, Andropogon gerardii, Liatris punctata in bud, Linum lewisii in seed. Westernmost slope of North Table Mountain, near North Table Loop, just north of parking lot and trailhead, 3.2 km. north of the GNIS location of Golden. Tom Schweich 1732. 15 Aug 2017. ( CDA JCOS s.n. KHD00065323 ) .

- North Washington Open Space, Eastern half of parcel, east slope at edge of smooth brome infestation. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1752. 31 Aug 2017. ( CS KHD00065157 ) Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.73 km. north northeast of the GNIS location of Golden. Along the north fence. Tom Schweich 2196. 11 Aug 2019. ( CAS REGIS UC UCR ) .

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 212 m. west of Plainview Road. Tom Schweich 1255. 26 Jul 2015. ( JCOS s.n. KHD56978 ) Same as Coll. No. 1255, but of shorter stature, perhaps because of distance from intermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 240 m. west of Plainview Road. Tom Schweich 1256. 26 Jul 2015. ( CAS UC UCR267468 ) .

- South Table Mountain, Roadside. South Table Mountain, both sides of Quaker Road. 13N 0484249E 4399100N. Loraine Yeatts 772. 7 Aug 1983. ( KHD19479 ) . .

Solidago nana Nutt.  Baby Goldenrod. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 40 cm., short white hairy throughout; Leaves, basal, withered (late in season), cauline, alternate, 95 mm. × 9-10 mm. wide (includes 15 mm. winged petiole? below) veins, 1 (others discontinuous), margin hairs similar to surface hairs, i.e., not ciliate, gradually reduced and sessile above; Inflorescence, heads numerous and small, involucre, 5.5 mm.; Phyllaries, 3-4 series, imbricate, graduated, 3-4 mm., veins 1; Receptacle, epaleate, (scales? to 0.5 mm.); Flowers of 2 kinds; Rays, few (3-4), fertile? (stigma visible but cypsela not as developed as those of disk flowers), corolla, 6 mm., yellow; Disk flowers, few (6-8), corolla, 4 mm., yellow; Pappus, capillary bristles; Cypsela, 1.5 mm., short hairy. Described from Coll. No. 1292, 9 Sep 2015.

- Heritage Square, open rocky hill 2 1/2 mi S of Golden. T R70W S10. Ernest H. Brunquist 44. 24 Aug 1959. ( CS23865 KHD17557 ) .

- Little Scraggy Peak, Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 1.47 km. southwest of the Little Scraggy trailhead, 60 km. south of the GNIS location of Golden. Tom Schweich 2235. 16 Sep 2019. ( Golden ) .

- North Table Mountain, Zeise, Larry Steven, 1976 .

- North Washington Open Space, On a bank that was formerly cut, unknown whether it was intentionally regevetated or not. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1759. 31 Aug 2017. ( KHD00065164 UCR ) . [ Similar to Coll. No. 1752. ]

- Ranson/Edwards Homestead Open Space Park, Few plants, or maybe one plant, few flowering stems, northwest side of ponderosa pine. High plains above Rocky Flats, 16.25 km north northwest of Golden, 1.8 miles north of CO State Highway 72 on Plainview Road, then 175 m. west southwest of Plainview Road. Tom Schweich 1292. 9 Sep 2015. ( JCOS s.n. KHD56981 ) Also observed/collected nearby: Toxicodendron rydbergii and Artemisia campestris. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.1 mi. north on Plainview Road, then 480 m. on a small ridge, 19.4 km. north northwest of the GNIS location of Golden. Tom Schweich 2205. 27 Aug 2019. ( CAS JCOS s.n. KHD OBI ) .

- South Table Mountain, Seeds of success; SCD #0276197 U.S.A., Colorado, Jefferson, South Table Mountain; take 32nd Avenue W, left on Eldridge, drive ca 1.2 km, then turn right on Foothills Road; follow to end of Foothill Circle at park entrance. Verbatim Coordinates: 39° 45' 4.8" N, 105° 9' 45.6" W. J. Shade 932114. 14 Oct 2005. ( RM841273 ) [ Eco-region 20: grassy foothills, with Bouteloua gracilis, Hesperostipa comata, Bromus tectorum, Artemisia frigida, Artemisia ludoviciana, Paronychia jamesii, Heterotheca villosa, Gutierrezia sarothrae, Alyssum sp., Penstemon watsonii, and Cercocarpus etc. ] At head of northeast-facing gully; gentle slope; lava capped mesa in Denver Formation. South Table Mountain; overlooking Rolling Hills Country Club. 13N 0484100E 4400300N. Loraine Yeatts 1083. 18 Sep 1984. ( KHD20502 ) . .

Solidago nemoralis Aiton var. decemflora (DC.) Brammall ex Semple.  Gray Goldenrod. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, 30-47 cm., stem and leaves short hairy throughout, getting a little glandular in the inflorescence; Leaves, basal, absent, withered(?), cauline, alternate, oblanceolate, 75 mm. × 12 mm. wide in #2432 vs. 75 mm. × 27 mm. wide in #2433, reduced above, distally shallowly toothed, veins, #3, lateral veins less prominent but clearly present; Inflorescence, panicle, compact, branches secund; Involucre, 4-5 mm., Phyllaries, imbricate in 3+ series, inner, > outer, oblong, 3.6 mm. × 1 mm. wide, veins, #1, tips, rounded; Flowers, of 2 kinds; Rays, #7(8), tube 2.6 mm. + blade 1.8 mm., yellow, fertile; Disk flowers, #5, tube 2.0-2.5 mm. + lobes 1.0-1.3 mm., yellow; Pappus, bristles, 4 mm. (Decribed from Coll. No. 2432 & 2433, 19 Aug 2020).

- Apex Park - Northern Parcel, Also collected nearby: Eriogonum effusum, Artemisia dracunculus, Ericameria nauseosa var. graveolens, Senecio spartioides, and Xanthisma spinulosum; the grasses having long since senesced. Compare to Coll. No. 2433, collected 140 m. southwest. Northeast quadrant of Apex Park - North Parcel, base of the Rocky Mountains foothills scarp, 4.46 km. south of the GNIS location of Golden. Tom Schweich 2432. 19 Aug 2020. ( COLO JCOS s.n. KHD OBI ) Mixed foothills grass- and shrub-land, the grasses having long since senesced in this long, hot, dry summer. Compare to Coll. No. 2432, made 140 m. to the northeast. Northeast quadrant of Apex Park - North Parcel, base of the Rocky Mountains foothills scarp, 4.56 km. south of the GNIS location of Golden. Tom Schweich 2433. 19 Aug 2020. ( COLO JCOS s.n. KHD OBI ) . .

Solidago nemoralis Aiton ssp. decemflora (de Candolle) Brammall ex Semple.  Gray Goldenrod. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lookout Mountain, Dry timber. Golden: Lookout Mountain. Ira W. Clokey 2643. 18 Sep 1915. ( RM491885 ) Lookout Mountain. 13N 0479600E 4397885N. Unknown 1 Sep 1917. ( KHD17560 ) . .

Solidago rigida L. var. humilis Porter.  Stiff Goldenrod. CalPhotos. Jepson eFlora. SEINet Taxon.

Herbaceous perennial, to 70 cm., apparently reproducing in part by offsets (“caudices branching”), short spreading hairy throughout; Leaves, basal and cauline, basal, #3-8, petiole, 15 cm., blade, 12.5 cm. × 6 cm. wide, ovate, entire, withered at flowering, cauline, alternate, sessile, 60 mm. × 27 mm. wide, ovate, entire, reduced above; Inflorescence, cymose, heads borne singly on short pedicels; Phyllaries, 2+ series, graduated, largest, 4.5 mm. × 1.3 mm. wide, tip obtuse, veins 3, ciliate distally; Receptacle, convex, epaleate; Flowers of 2 kinds; Rays, fertile, corolla, 5.5 mm. × 0.8 mm. wide, yellow; Disk flowers, corolla, 5 mm., yellow; Pappus, bristles, 1 series; Cypsela, 1 mm., glabrous. Described from Coll. No. 1280, 28 August 2015.

- Clear Creek Canyon, mountains United States, Colorado, Jefferson, aspen zone near Golden City; Clear Creek Canyon Th. Holm 15 Aug 1896. ( WIS292989 ) .

- Ranson/Edwards Homestead Open Space Park, Small terrace near an intermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 435 m. west of Plainview Road. Tom Schweich 1280. 28 Aug 2015. ( CAS JCOS s.n. KHD56982 UC UCR267479 ) Wet, almost swampy, area on the south side of an intermittent stream. 1.7 mi. west on CO Highway 72 Coal Creek Canyon Road, from CO Highway 93, 1.2 mi. north on Plainview Road, then 400 m. east of Plainview road, 15.3 km. north northwest of the GNIS location of Golden. Tom Schweich 1556. 3 Sep 2016. ( CS OBI83373 ) High plains above Rocky Flats, 1.7 mi. west on Colorado Highway 72 from Colorado Highway 93, 1.6 mi. north on Plainview Road, then 270 meters southwest on the slope above the road. Tom Schweich 1769. 1 Sep 2017. ( CDA COLO02348118 EIU ) Low, wet area. Also collected here: Helianthus pauciflorus ssp. subrhomboideus, nearby: Lactuca serriola, Sonchus asper, and Sporobolus heterolepis. High plains above Rocky Flats, 19.4 km. north northwest of the GNIS location of Golden, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. north on Plainview Road, then 130 m. west into open prairie. Tom Schweich 2198. 27 Aug 2019. ( JCOS s.n. KHD OBI REGIS UCR ) . .

Solidago simplex Kunth.  Sticky Goldenrod. CalPhotos. Jepson eFlora. SEINet Taxon.

- Heritage Square, Cultivated. Within 100 yards of dig" at east edge of rocky hillside to north of "Dig" proper." 13N 0481578E 4396062N. Ernest H. Brunquist 23 Sep 1959. ( KHD17503 ) .

- Lookout Mountain, Spring House, Lookout Mt, Golden Ellsworth Bethel 14 Jan 1969. ( CS20241 ) . .

Solidago speciosa Nutt.  Showy Goldenrod. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, Zeise, Larry Steven, 1976 . .

Solidago speciosa Nutt. var. pallida Porter.  Pale Showy Goldenrod. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, 50-55 cm., new rosette growing from caudex while flowering from adjacent stem; Stem, glabrous, reddish; Leaves, new rosette of basal leaves, petiole 38-55 mm., blade 80 mm. × 25 mm. wide, pinnately veined, glabrous, margin minutely ciliate, basal leaves of flowering stem, withered, cauline leaves, reduced, not clasping, short petioled 18-0 mm. distally, glabrate, turning reddish, margin ciliate; Inflorescence, panicle-like (only 1° and 2° branches), minutely glandular among heads; Heads, many, 6 mm. × 2.3 mm. wide; Peduncles, 2 mm.; Involucre, 3.5 mm. × 2.5 mm. wide; Phyllaries, 3+ graduated series, 1.7-3.0 mm. × 0.7 mm. wide, vein, 1, tip, obtuse, ciliate; Receptacle, epaleate; Flowers, 2 kinds; Rays, few (#2), tube 2 mm. + blade 2 mm., yellow, fertile; Disc flowers, #10-12, tube 3 mm. + lobes 1 mm., yellow; Pappus, bristles, 3 mm.; Cypsela, 1 mm., glabrous (sparse small hairs). Described from Coll. No. 1768, 1 Sep 2017.

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 1.7 mi. west on Colorado Highway 72 from Colorado Highway 93, 1.6 mi. north on Plainview Road, then 260 meters southwest on the slope above the road. Tom Schweich 1768. 1 Sep 2017. ( JCOS s.n. KHD00065170 ) . .

Sonchus asper (L.) Hill.  Spiny Sowthistle. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, On disturbed soil Golden, In alley of 100 10th Street, Golden, CO. 13N 0481596E 4401241N. Jim Ratzloff 21 Jul 1976. ( KHD17694 ) .

- Kinney Run, Moist soil. Steep bank of Kinney Run, just north of Tripp Ranch, 2.61 km. south of the GNIS location Golden. Tom Schweich 2414. 31 Jul 2020. ( COLO KHD ) .

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 19.4 km. north northwest of the GNIS location of Golden, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. north on Plainview Road, then 150 m. west into open prairie. Tom Schweich 2201. 27 Aug 2019. ( KHD ) . .

Stephanomeria pauciflora (Torr.) A. Nelson.  Brownplume Wirelettuce. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, shrub-like, to 30 cm.; Leaves, alternate, sessile, 80 mm. × 15 mm. wide, lanceolate, deeply toothed (runcinate); Heads, many; Phyllaries, 3 graduated series, 4-9 mm. × 1.3-1.5 mm. wide; Flowers, 1 kind; Rays, #5, 12 mm. × 2.5 mm. wide, white, fading tan; Pappus, bristles, connate into 5 groups corresponding to ribs of cypsela, 7 mm., plumose upper 3/4; Cypsela, 4 mm., beak, 0, rugose-tuberculate, 5 broad ribs. (Described from Coll. No. 1518, 29 July 2016).

- North Table Mountain Park, Grassy southeast-facing slope. Lower east slopes of North Table Mountain, between North Table Loop and Mesa Top Trail, 0.7 km. northwest of the Easley Road trailhead; 3.9 km. northeast of the GNIS location of Golden. Tom Schweich 1518. 29 Jul 2016. ( COLO02347961 KHD00065717 OBI176126 ) .

- South Table Mountain, On steep, clay slope. South Table Mountain; west side of Quaker Road. 13N 0484260E 4399300N. Loraine Yeatts 773. 7 Aug 1983. ( KHD19403 ) . .

Symphyotrichum ericoides (Linnaeus) G. L. Nesom.  (Syn: Virgulus ericoides (Linnaeus) Reveal & Keener ) White Heath Aster. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, woody at base, stems ascending, to 40 cm., spreading vegetatively, short hairy and minutely glandular throughout; Leaves, alternate, sessile, narrowly lanceolate or oblong, 7-9 mm. × 1.5 mm. wide, entire, strigose, tip, small white spine; Heads, borne singly along stem, occasionally 2 per stem, on leafy pedicels; Flowers, of 2 kinds; Involucre, 4 mm. × 5 mm. wide, bell-shaped; Phyllaries, 2+ series, 3-4 mm. × 0.7-0.8 mm. wide, white below with 1 brown or green vein, rhomboid green above, tip with very small spine; Receptacle, epaleate; Rays, corolla, white, tube 2 mm + ligule 5.0-6.5 mm., fertile; Disc flowers, corolla, yellow, tube 3.5 mm. + lobes 0.5 mm., (some?) lobes reddish; Pappus, bristles, fine, barbelate, 4 mm.; Cypsela, 1 mm. (Described from Coll. No. 1558, 3 September 2016 and Coll. No. 1743.5, 23 August 2017).

- Golden, Native to the area, but ruderal in this location, as sometimes also observed with Ericameria nauseosa var. graveolens and Senecio spartioides. Edge of the yard on Cheyenne Street at 908 4th Street, 1 km northwest of the GNIS location of Golden. Tom Schweich 1743.5 23 Aug 2017. ( CDA ) .

- Ranson/Edwards Homestead Open Space Park, 1.1 miles north on Plainview Road from CO State Highway 72, then 400 m. east, to a damp area where an old ranch road first crosses an ephemeral stream. Tom Schweich 1558. 3 Sep 2016. ( JCOS s.n. KHD00063996 OBI83372 ) High plains above Rocky Flats, 1.7 mi. west on Colorado Highway 72 from Colorado Highway 93, 1.6 mi. north on Plainview Road, then 210 meters southwest on the slope above the road and near a small group of Ponderosa pines. Tom Schweich 1771. 1 Sep 2017. ( JCOS s.n. KHD00065402 ) . .

Symphyotrichum falcatum (Lindl.) G.L. Nesom.  (Syn: Aster falcatus Lindl. ) White Prairie Aster. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 40 cm., scabrous throughout; Leaves, basal, unknown, cauline, alternate, sessile, 32 mm. × 2.7 mm. wide, linear-oblanceolate, entire, tip spinulose, gradually reduced above; Inflorescence, extended panicle; Involucre, 5 mm. × 4.5 mm. wide; Phyllaries, in 4 graduated series, 3-5 mm. × 0.8 mm. wide, chartaceous below, green above, elliptical, tip spinulose except innermost; Receptacle, epaleate; Flowers of 2 kinds, Rays, pistillate, corolla, tube 2.5 mm. + laminae 5 mm. × 1.3 mm, white spatulate; Disk flowers, corolla, 4 mm., some rose to purple, some yellow; Pappus, capillary bristles, 4.5 mm.; Cypsela, 1 mm., hairy. Described from Coll. No. 1300, 23 Sep 2015.

- Golden, Clear Creek Jcn. near Arvada, CO. 13N 0482059E 4401471N. Unknown 20 Aug 1916. ( KHD8118 ) .

- Heritage Square, open area 2 1/2 mi S of Golden. T R70W S10. Ernest H. Brunquist 52. 21 Sep 1959. ( CS37476 ) .

- North Table Mountain, as Aster falcatus Zeise, Larry Steven, 1976 .

- North Washington Open Space, See also my Coll. No. 1760. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue. Mid-slope in southwestern section, probably not in the revegetated zone. Tom Schweich 1712. 14 Jul 2017. ( REGIS ) South-central portion of parcel, but still above the most disturbed areas. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1760. 31 Aug 2017. ( EIU KHD00065165 OBI ) .

- South Table Mountain, Forming patches on S. facing slope below mesa edge. S. Table Mt. Near road up 1st gully to W. of Quaker road. UTM: 841992 Loraine Yeatts 834. 9 Sep 1983. ( BRY0220398 COLO00149393 KHD19327 ) .

- Tin Cup Ridge, Lower northeast slopes of Tin Cup Ridge, the northern extension of Dakota Ridge into Golden, 4.5 km south southeast of the GNIS location of Golden. Tom Schweich 1300. 23 Sep 2015. ( CAS JCOS s.n. KHD56983 UC UCR267493 ) . .

Symphyotrichum laeve (L.) Á. Löve & D. Löve.  Smooth Blue Aster. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 70 cm., rhizomatous or rooting at nodes; Leaves, alternate, cauline, linear, 120 mm. × 8 mm. wide, reduced and more lanceolate above, glabrous, margin very shallowly toothed and lightly ciliate, entire above; Inflorescence, panicle with 1° and 2° branches; Heads borne singly on 10-15 mm. pedicels, 8 mm. × 10 mm. wide; Phyllaries in 3+ graduated series, 3-10 mm. margins white to tips diamond-shaped green, all tips acute, few hairs; Receptacle epaleate; Flowers of 2 kinds; Ray flowers, fertile, tube green 3.5 mm. + blade blue 9.5 mm. × 1.5 mm, spatulate-oblanceolate; Disk flowers, outer reddish-purple, inner yellow, corolla, 6.5 mm.; Pappus, bristles, 5 mm.; Cypsela, 3 mm × 1.2 mm. wide, glabrous, veins, 4, prominent. Described from Coll. No. 1278, 20 August 2015. Only var. geyeri is recognized in Colorado per Weber & Wittmann (2012) and Ackerfield (2015). However, the green apical zones of these phyllaries are more diamond-shaped than lanceolate suggesting var. laeve, especially if the phyllaries are described as strongly unequal. The possibility that these plants should be assigned to var. laeve or that var. geyeri should be considered a synonym of var. laeve is discussed in FNANM.

- Lippincott Property, Highest prairie at edge of ponderosa pine woodland. Heavily grazed by cattle. Also collected here: Hypericum perforatum, a Colorado Noxious Weed List C plant. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, north segment of parcel, south side of Bull Gulch, 22.8 km. north northwest of the GNIS location of Golden. Tom Schweich 2222. 29 Aug 2019. ( CIBO COLO JCOS s.n. KHD REGIS ) .

- Ranson/Edwards Homestead Open Space Park, Northeast slope, with Gentiana, Monardella, and a mat-forming Asteraceae. Ambiguous as to variety name, as also noted on Coll. No. 1278. High plains above Rocky Flats, 16.25 km north northwest of Golden, 1.8 miles north of CO State Highway 72 on Plainview Road, then 175 m. west of Plainview Road. Tom Schweich 1291. 9 Sep 2015. ( CAS JCOS s.n. KHD56984 OBI83235 UC UCR267487 ) High plains above Rocky Flats, 16.7 km north northeast of Golden, 2.4 miles north of CO State Highway 72 on Plainview Road, then 250 m. northwest of Plainview Road on a social trail. Tom Schweich, with Sofia Albaladejo 1278. 20 Aug 2015. ( CAS JCOS s.n. KHD00062149 UC UCR267476 ) . .

Symphyotrichum laeve (L.) Á. Löve & D. Löve var. geyeri (A. Gray) G.L. Nesom.  Smooth Blue Aster. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden Reservoir, SE-facing slope, sandy soil. Lariat Loop Rd., 1 mi. NW of I-70, 1/4 mi. SW of Golden Reservoir, SW of Golden. T4S R70W S5. J. Hutchison 3. 1 Sep 1996. ( CS82050 ) .

- Lookout Mountain, Dry rocky timber. Golden: Lookout Mountain. Ira W. Clokey 2640. 18 Sep 1915. ( RM491883 ) Dry rocky woods. Golden: Lookout Mountain. Ira W. Clokey 2641. 18 Sep 1915. ( RM491884 ) . .

Symphyotrichum lanceolatum (Willd.) G. L. Nesom ssp. hesperium (A. Gray) G. L. Nesom.  (Syn: Aster lanceolatus Willd. ssp. hesperius (A. Gray) Semple & J. Chmielewski ) Western Lance-Leaved Aster. CalPhotos. Jepson eFlora. SEINet Taxon.

- Deadman Gulch, Riparian, also seen or collected nearby: Clematis ligusticifolia, Mirabilis nyctaginea, Crataegus succulenta, and Epilobium hirsutum. On the edge of the streambed in Deadman Gulch (Kinney Run), above US Highway 6 and just below Eagle Ridge Drive, 3.43 km. south of the GNIS location of Golden. Tom Schweich 2441. 28 Aug 2020. ( COLO KHD OBI ) .

- Golden, Roadside. E of Golden. J. H. Ehlers 8543. 23 Sep 1942. ( RM492644 ) Roadside E of Golden. J. H. Ehlers 8544. 23 Sep 1942. ( COLO00048256 RM492645 ) .

- Heritage Square, open field ca 2 1/2 mi S of Golden. T R70W S10. Ernest H. Brunquist 55. 21 Sep 1959. ( CS37494 ) .

- South Table Mountain, Large patch at head of 1st drainage W. of Quaker road in swampy seeping area with sedge. South Table Mountain. Head of 1st drainage W. of Quaker road. UTM: 83979938 Loraine Yeatts 831. 9 Sep 1983. ( BRY0221058 COLO00048272 KHD00005321 KHD00005325 ) . .

Symphyotrichum porteri (A. Gray) G.L. Nesom.  (Syn: Aster porteri A. Gray ) Smooth White Aster. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 35 cm., eglandular, generally not hairy; Stem ascending; Leaves, cauline, alternate, sessile, 53 mm. × 3 mm. wide, lance-linear, many rolled, tip pointed, maybe spinulose, generally glabrous except some distal margins; Inflorescence, crowded, ±flat-topped; Heads borne simgly on short pedicels; Involucre, 5 mm. × 8 mm. wide; Phyllaries, 2+series, 3.5 mm. × 0.7 mm. wide, ±equal, inner ≥ outer, mid-vein green, margins white proximally, green distally, tip acute; Receptacle, epaleate, convex (if not conic); Flowers of two kinds; Rays, fertile, corolla, 6.5 mm., white; Disk flowers, corolla, 3.0 mm., yellow; Pappus, bristles, barbed, single, 2.5 mm.; Cypsela, 0.7 mm., sparsely hairy. Described from Coll. No. 1266, 29 Jul 2015.

- Golden, United States of America, Colorado, Jefferson Co., Golden Tom Schweich 8 Oct 1882. ( NY1854582 ) .

- Heritage Square, open ground ca 2 1/2 mi S of Golden. T R70W S10. Ernest H. Brunquist 37. 22 Aug 1959. ( CS23922 ) .

- Lippincott Property, Also collected here: Grindelia squarrosa, Heterotheca foliosa, Pericome caudata, Senecio spartioides, and Nepeta cataria. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, among boulders on the south side of Bull Gulch, 22.9 km. north northwest of the GNIS location of Golden. Tom Schweich 2219. 29 Aug 2019. ( CIBO COLO JCOS s.n. KHD REGIS ) .

- Lookout Mountain, Above Golden. Mrs. Ella Bailar 1905. ( COLO00048736 ) .

- North Table Mountain, as Aster p. Kilburn, Paul D., and Sally L. White, 1992 .

- North Washington Open Space, Also collected nearby: Cryptantha virgata, Lithospermum incisum, Penstemon secundiflorus, and Poa secunda. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 2.31 km. north northwest of the GNIS location of Golden. Near top of hill, north central part of the parcel. Tom Schweich 2230. 12 Sep 2019. ( CDA COLO CS KHD ) .

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.8 km north northeast of Golden, 1.4 miles north of CO State Highway 72 on Plainview Road, 163 m. northeast of Plainview Road. Tom Schweich 1266. 29 Jul 2015. ( JCOS s.n. KHD00062150 UC ) Sparse ponderosa pine forest. High plains above Rocky Flats, 16.7 km north northeast of Golden, 2.4 miles north of CO State Highway 72 on Plainview Road, then 250 m. northwest of Plainview Road on a social trail. Tom Schweich 1279. 20 Aug 2015. ( CAS JCOS s.n. KHD00062152 OBI83213 UCR267477 ) Shade of ponderosa pine. High plains above Rocky Flats, 16.25 km north northwest of Golden, 1.8 miles north of CO State Highway 72 on Plainview Road, then 125 m. west of Plainview Road. Tom Schweich 1290. 9 Sep 2015. ( CAS JCOS s.n. KHD00062154 OBI83233 ) Growing with Coll. No. 1771, Symphyotrichum ericoides. High plains above Rocky Flats, 1.7 mi. west on Colorado Highway 72 from Colorado Highway 93, 1.6 mi. north on Plainview Road, then 210 meters southwest on the slope above the road and near a small group of Ponderosa pines. Tom Schweich 1770. 1 Sep 2017. ( CDA EIU ) .

- South Table Mountain, Extremely large patch on disturbed flat area of mesatop, widespread. South Table Mountain. 13N 0484135E 4399630N. Loraine Yeatts 821. 29 Aug 1983. ( BRY0221967 COLO 00048645 KHD19328 ) .

- Tin Cup Ridge, West-facing grassy slope. Openings along the rocky top of Tin Cup Ridge, the northern extension of Dakota Ridge into Golden, 5.1 km south southeast of the GNIS location of Golden. Tom Schweich 1297. 23 Sep 2015. ( CAS JCOS s.n. KHD00062156 UC UCR267490 ) . .

Taraxacum officinale F. H. Wigg.  (Syn: T. laevigatum (Willd.) DC. ) Common Dandelion. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, Tom Schweich 4/21/2020. .

- Colorado School of Mines Survey Field, Center of Survey Field, on a small hill of older alluvium, 525 m south of Beverly Heights Park, 2.2 km south southwest of the GNIS location of Golden. Tom Schweich 1305. 9 Apr 2016. ( KHD00063972 ) Northern portion of Survey Field, 2 km south southwest of the GNIS location of Golden. Tom Schweich 1306. 9 Apr 2016. ( CAS Golden KHD00063974 UCR277953 ) .

- Kinney Run, Thirty meters east of and above the Kinney Run Trail, in thin soil near bare rock outcrops of a small hogback, 3.16 km. south of the GNIS location of Golden. Tom Schweich 1781. 12 Apr 2018. ( CDA COLO02348035 EIU ) .

- Lippincott Property, Gentle slope at edge of ponderosa pine forest. Jointly owned by City of Boulder OSMP and Jefferson County Open Space, approximate center of property. 21.8 km. north northwest of the GNIS location of Golden. Tom Schweich 2015. 18 Apr 2019. ( CIBO COLO JCOS s.n. KHD ) .

- Magic Mountain, Tom Schweich 4/18/2018. .

- Mount Falcon Park, 1100 10th Street, Golden, CO. 13N 0480637E 4400468N. Jim Ratzloff 24. 22 Apr 1976. ( KHD17721 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Zeise, Larry Steven, 1976 Flat area beside the trail. On the City of Golden North Table Mountain trail, just below the southwest rim of North Table Mountain, 1.9 km north of the GNIS location of Golden. Tom Schweich 1317. 22 Apr 2016. ( CAS JCOS s.n. KHD00063971 OBI83179 ) .

- North Washington Open Space, Tom Schweich 3/27/2017. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue. 2.3 km. northwest of GNIS location of Golden. Top of hill, sunny slope south of social trail. Tom Schweich 2013. 16 Apr 2019. ( CS KHD REGIS ) .

- Ranson/Edwards Homestead Open Space Park, One of the earliest flowers in bloom, collected with Viola nuttallii. Stevens parcel immediately south of the Ranson/Edwards parcel, 115 m north of the Plainview Road bridge over Coal Creek, 14.5 km north northwest of the GNIS location of Golden. Tom Schweich 1314. 14 Apr 2016. ( JCOS s.n. KHD00063970 ) .

- South Table Mountain, Flat meadow on mesa top. Occasional but widespread. South Table Mountain. 13N 0484200E 4399500N. Loraine Yeatts 467. 2 May 1983. ( COLO 00139907 KHD19459 ) . .

Thelesperma megapotamicum (Spreng.) Kuntze.  Hopi Tea Greenthread. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 55 cm., woody at base, glabrous, eglandular; Leaves, opposite, pinnately lobed, lobes filiform, 30-35 mm.; Inflorescence, 1-3 heads per stem on 10 cm. peduncles; Phyllaries, 2 dimorphic series, without bristles or spines, outer, 2 mm. × 1.3 mm. wide, spreading, inner, 8 mm. × 3 mm. wide, connate 4.7 mm, tips erect; Receptacle, paleate, flat; Paleae, 7 mm. × 2 mm. wide, mid-vein greenish-brown, otherwise chartaceous; Flowers of 1 kind; Disc flowers, corolla, tube 3 mm. + throat 1 mm. + lobes 2 mm., color yellow with red-brown veins; Pappus, 2 retrorsely barbed awns; Cypsela, 3.8 mm. (Described from Coll. No. 1483, 6 Jul 2016.)

- Cressmans Gulch (lower), Tom Schweich 6/12/2020. .

- Colorado School of Mines Survey Field, Mixed prairie near the base of Lookout Mountain. Northern part of the Survey Field, above the access road, about 90 m. south of Lookout Mountain Road, 1.9 km. south southwest of the GNIS location of Golden. Tom Schweich 1483. 6 Jul 2016. ( CAS COLO02347557 CS EIU KHD00063463 UC ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Mixed grasses and forbs on the nose of a small ridge. Northwest slope of North Table Mountain, near the intersection of the North Table Loop and the Mesa Top Trail, 3.7 km. north of the GNIS location of Golden. Tom Schweich 1503. 13 Jul 2016. ( CS JCOS s.n. KHD00063467 OBI83339 UCR074171 ) Near top of small mound, also collected here: Opuntia macrorhiza and Rhus trilobata. Near the north boundary of the park, lower north slopes of North Table Mountain, in what appears to be the hummocky terrain of an ancient landslide, 6.06 km. north northeast of the GNIS location of Golden. Tom Schweich 2140. 11 Jul 2019. ( JCOS s.n. KHD OBI REGIS ) .

- North Washington Open Space, Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue. Center of parcel, top of hill. Tom Schweich 1707. 14 Jul 2017. ( CDA KHD00065588 ) .

- South Table Mountain, Near lava rock bed. South Table Mountain; on mesatop. 13N 0484000E 4399700N. Loraine Yeatts 382. 11 Jul 1983. ( KHD19458 ) . .

Townsendia .  Townsend Daisy. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, species undetermined Zeise, Larry Steven, 1976 . .

Townsendia exscapa (Richards.) Porter.  Stemless Townsend Daisy. CalPhotos. Jepson eFlora. SEINet Taxon.

- Chimney Gulch, USA, Colorado, Jefferson, Chimney Gulch trail on way to Beaver Brook Trail. Verbatim Coordinates: 13N 0478943E 4397998N. Ernest H. Brunquist 2 Jun 1946. ( KHD328 ) .

- Magic Mountain, USA, Colorado, Jefferson, About 150 yards Northeast of archeological dog, Peabody Museum (Harvard). On summit of slight rise. Summit of slight rise. No shade. Soil reddish, stony, apparently not very fertile. Ernest H. Brunquist 79. 17 Apr 1960. ( KHD17780 ) . .

Townsendia grandiflora Nutt.  Largeflower Townsend Daisy. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 15 cm.; Stem, villous; Leaves, opposite below, alternate above, 32-43 mm. × 3 mm. wide, narrowly oblanceolate, long ciliate at base; Inflorescence, heads borne singly; Involucre, 12 mm. × 25 mm. wide; Phyllaries, 5+ imbricate series, 13 mm. × 2.5-3.0 mm. wide, ±equal, ovate, margin ciliate, tip acuminate, green around prominent mid-vein, chartaceous margins; Receptacle, flat, epaleate, very short bristles; Flowers of two kinds; Rays, sterile, pappus, scales, 0.6 mm., corolla, 14-21 mm. × 1.2-1.5 mm. wide, white with purple center; Disk, 14-21 mm. wide, pappus, bristles, 4.0 mm., corolla, 4.5-5.0 mm., yellow; cypsela, 4 mm. × 1.3 mm., laterally compressed (Described from Coll. No. 1247, 24 Jul 2015, and Coll. No. 1404, 8 June 2016).

- Golden, Chimney Gulch trail on way to Beaver Brook Trail. 13N 0478943E 4397998N. Ernest H. Brunquist 2 Jun 1946. ( KHD328 ) .

- Lookout Mountain, On exposed bank in schist and granite talus, small mesa. On the Lariat Trail, Lookout Mountain. Hansford T. Shacklette 6681. 19 May 1962. ( COLO00858043 COLO00858050 ) Upper rocky slopes of Lookout Mt., Golden. J. H. Ehlers 8108. 5 Jul 1941. ( COLO00144980 ) .

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, On top of the flat surface of a spoils pile from the basalt quarry to the west. Southwest portion of the top of North Table Mountain, across the North Table Loop from a large basalt quarry, 2.2 km. north of the GNIS location of Golden. Tom Schweich 1404. 8 Jun 2016. ( JCOS s.n. KHD00063984 ) Gentle east-facing slope, east of quarry. Top of North Table Mountain, near the southwest edge of the mesa, 1.99 km. north of the GNIS location of Golden. Tom Schweich 1927. 8 Jun 2018. ( COLO02347581 KHD OBI137665 UC ) .

- South Valley Park, Stiff sandstone-derived soil below cliffs, nearly bare of vegetation. Nearby: Quercus gambelii, Cryptantha virgata, Lappula occidentalis, Mertensia lanceolata, Collinsia parviflora, and Toxicoscordion paniculatum. Between the Coyote Song Trail and the sandstone cliffs on the east side of the park, 4.66 km. west northwest of Chatfield Farms, Denver Botanic Garden. Tom Schweich 2292. 20 May 2020. ( KHD ) .

- South Table Mountain, On flat lava bedrock area near mesa edge. South Table Mountain. 13N 0484293E 4399631N. Loraine Yeatts 593. 27 Jun 1983. ( KHD19457 ) Basalt flow in Denver Formation. S. Table Mt., a lava capped mesa; on E. facing slope of Jeffco Open Space land. UTM: 863994 Mary E. Edwards 500. 17 Jul 1983. ( COLO00144881 ) .

- Windy Saddle Park, Several plants between two Cercocarpus montana. Southeast Windy Saddle Park, rocky ridge on the lower slopes of Lookout Mountain, 2.21 km south southeast of the GNIS location of Golden. Tom Schweich 1247. 24 Jul 2015. ( KHD00062157 ) . .

Townsendia hookeri Beaman.  Hooker's Townsend Daisy. CalPhotos. Jepson eFlora. SEINet Taxon.

Low growing perennial, from a woody caudex, acaulescent, to 2.5 cm.; Leaves, linear to narrowly oblanceolate, 30 mm. × 1.2 mm. wide, appressed hairy or strigose, eglandular; Peduncle, 3 mm., spreading hairy, eglandular; Heads, solitary, sessile (or apparently so), 12 mm. × disc (10)15-20 mm. wide; Phyllaries in 3+ overlapping series, 8 mm. × 1.2 mm. wide, all same length but inner phyllaries attached higher on receptacle giving impression of inner > outer, green, margin scarious and ciliate, outer hairy, tipped by a tuft of tangled cilia, inner, margins and tip ciliate, but not tangled; Receptacle epaleate, flat; Ray flowers, #25-30, fertile (pistillate), cypsela 3.3 mm., tuft of glandular hairs at base, pappus of 1 series white bristles, 4-5 mm., corolla, 10-11 mm., white to lavender; Disc flowers, bisexual, cypsela, 3.7 mm., glandular hairy, pappus 1 series white bristles, 4-6 mm., corolla, 3.8-4.5 mm., yellow, lobes dark. (Described from Coll. No. 1087, 25 Apr 2015, and Coll. No. 1304, 9 April 2016) The disc pappus sometimes being longer than the ray pappus could lead one to T. incana in Ackerfield (2015). Perhaps caulescence would be a better character, as used by Weber & Wittmann (2012).

- Colorado School of Mines Survey Field, 2 plants in bloom Tom Schweich 4/7/2020. South-facing slope of rocky older alluvium. Center of Survey Field, 525 m south of Beverly Heights Park, 2.2 km south southwest of the GNIS location of Golden. Tom Schweich 1304. 9 Apr 2016. ( CAS KHD00063976 UCR277952 ) . [ Coll. No. 1304, 9 April 2016, characters observed: Perennial, acaulescent, Leaves, narrowly oblanceolate, strigose; Head, sessile (or apparently so), 12 mm. × 10-12 mm. wide; Phyllaries, many series, 8 mm., outer hairy, tipped by a tuft of tangled cilia, inner, margins and tip ciliate, but not tangled; Rays, #25-30, corolla 10 mm., white, pappus bristles, 5 mm.; Disc flowers, corolla 4.5 mm., yellow, pappus, 6 mm., bristles. The disc pappus being longer than the ray pappus could lead one to T. incana in Ackerfield (2015). Perhaps caulescence would be a better character. ]

- Deadman Gulch, The type locality of T. hookeri is Mount Vernon Canyon, about 5 km. south. Also collected here: Packera plattensis, Euphorbia brachycera, and Ipomopsis spicata. High plains at the base of the Rocky Mountain Front Range, linear northwest trending dry gravelly area, either in a trace of the Golden Fault or adjacent to it, 3.15 km. south of the GNIS location of Golden. Tom Schweich 2251. 27 Apr 2020. ( OBI ) .

- Mount Vernon Canyon, Dry hills. Type, holotype at RM, see Beaman, 1957. Ira W. Clokey 4338. 13 Apr 1920. ( CAMN196023 F MICH1107792 MO2709563 NY274160 RM12061 RM88027 RSA1644 RSA1645 UTC22815 ) .

- Ranson/Edwards Homestead Open Space Park, Rocky alluvial terrace. Stevens parcel immediately south of the Ranson/Edwards parcel, 360 m northwest of the Plainview Road bridge over Coal Creek, 14.5 km north northwest of the GNIS location of Golden. Tom Schweich 1315. 14 Apr 2016. ( COLO02348449 CS JCOS s.n. OBI83162 ) In the shade of a mature ponderosa pine, gentle slope, rocky alluvial soil, 460 meters northeast of the GNIS location of Plainview, 2.2 miles generally north on Plainview Road from Colorado State Highway 72, then 70 m west. Tom Schweich, with Matt Schweich 1087. 25 Apr 2015. ( JCOS s.n. KHD56956 UC2045770 ) .

- South Table Mountain, Open, sparsely vegetated area of meadow on hill; in loose rocky soil with Linum lewisii, Eriogonum umbellatum and short grasses; populated area 100x150 yards with 8 plants/square meter at densest. Front Range, South Table Mountain (a lava capped mesa in the Denver formation). 1/8 mile west of Quaker road. 13N 0484293E 4399631N. Loraine Yeatts 2104. 17 Mar 1989. ( COLO00145029 KHD26914 ) Infrequent on clay loam, level site. Mesa ½ mi. south of Golden. Margaret M. Douglass 542. 8 Apr 1954. ( COLO00145060 ) . .

Tragopogon dubius Scop.  (Syn: Tragopogon dubius Scop. ssp. major (Jacq.) Vollman ) Yellow Salsify. CalPhotos. Jepson eFlora. SEINet Taxon.

Peduncle inflated distally, flowers yellow, phyllaries in 1 overlapping series, ligules 3-5 mm. shorter than phyllaries.

- Colorado School of Mines Survey Field, Southern part of Survey field, base of northwest-facing bank of an unnamed watercourse, 2.47 km. south of the GNIS location of Golden. Tom Schweich 1885. 28 May 2018. ( CAS KHD00068685 UC ) .

- Heritage Square, growing in open, grassy field on a gentle south facing slope field about 125 yds east of archelogical project of Peabody Museum(Harvard Univ), 13N 0481701E 4396055N. Ernest H. Brunquist 127. 2 Aug 1960. ( KHD17868 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Zeise, Larry Steven, 1976 .

- North Table Mountain Park, Scattered widely along trail and grassy slopes above and below. On a social trail from the intersection of Easley Road and CO Highway 58, west and upslope to North Table Loop, 1.9 km. northeast of the GNIS location of Golden. Tom Schweich 1339. 12 May 2016. ( CAS JCOS s.n. KHD00063978 UC ) .

- North Washington Open Space, Common, scattered throughout parcel; these from top of hill. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1616. 15 May 2017. ( CDA COLO02347912 CS KHD00065381 ) .

- Ranson/Edwards Homestead Open Space Park, Dry upper banks on south side of creek. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 65 m. east of Plainview Road. Tom Schweich 1115. 28 May 2015. ( JCOS s.n. KHD56968 UCR266088 ) .

- South Table Mountain, South table mountain. 13N 0484293E 4399631N. Loraine Yeatts 534. 1 Jun 1983. ( KHD19455 ) S. Table Mt. Common along Quaker Rd. just past Golden Hills Rd. UTM: 842988 Loraine Yeatts 577. 16 Jun 1983. ( COLO00146050 ) .

- Tin Cup Ridge, In grasses amid shrubs. Lower east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.83 km. south southeast of the GNIS location of Golden. Tom Schweich 1863. 23 May 2018. ( EIU JCOS s.n. KHD00069213 OBI ) . .

Troximon pubescens (Rydb.) A. Nels.  CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Slopes of Hog Back, Near Golden, Jefferson Co. J. H. Ehlers 8023. 1 Jun 1940. ( UT110661 ) . .

Verbesina encelioides (Cav.) Benth. & Hook. f. ex A. Gray.  (Syn: Ximenesia encelioides Cav. ) Golden Crownbeard. Cowpen Daisy.. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual/perennial not observed, but described as annual; Stem, densely strigose; Leaves, cauline, alternate, petiole 48 mm. + blade 80 mm. × 40 mm. wide, reduced above, lanceolate, margin coarsely toothed, adaxial sparsely strigose, abaxial densely strigose; Heads, 7 mm. × 13 mm. wide, borne singly, on peduncles 6-43 mm.; Phyllaries, 1 series, 7 mm. × 1.5 mm. wide, strigose abaxially; Receptacle, conical, paleate; Flowers, 2 kinds, Rays, #12, tube 2 mm. + laminae 15 mm. × 4.5 mm. wide, yellow, sterile; Disk flowers, corolla, 3.5 mm., yellow; Pappus, [2 awns,] 1 mm.; Cypsela, 3.5 mm., strigose. (Described from Coll. No. 1539, 18 August 2016.)

- Golden, Roadside. Dry rolling plains. Golden. J. H. Ehlers 8346. 25 Sep 1941. ( COLO00151134 ) .

- North Table Mountain Park, On edge of private horse pasture. Lower north slopes of North Table Mountain at the fenceline of the Williams parcel, 0.88 km. southeast of the Mesa Spur trailhead on W. 58th Avenue, 4.7 km. north northeast of the GNIS location of Golden. Tom Schweich 1539. 18 Aug 2016. ( JCOS s.n. KHD00064003 ) .

- South Table Mountain, South Table mountain, East side of Quaker road in gravel. 13N 0484293E 4399631N. Loraine Yeatts 854. 19 Sep 1983. ( KHD19456 ) . .

Xanthisma spinulosum (Pursh) D. R. Morgan & R. L. Hartm.  (Syn: Machaeranthera pinnatifida (Hook.) Shinners ) Spiny Goldenweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, Tom Schweich 8/19/2020. Also collected nearby: Eriogonum effusum, Artemisia dracunculus, Ericameria nauseosa var. graveolens, and Senecio spartioides; the grasses having long since senesced due to the hot dry summer. Several other collections and observations of this taxon nearby. Northeast quadrant of Apex Park - North Parcel, high plains at the base of the Rocky Mountains foothills scarp, 4.47 km. south of the GNIS location of Golden. Tom Schweich 2432.1 19 Aug 2020. ( KHD ) East-facing slope above an unnamed gulch. Mixed foothills shrub- and grass-land, though mostly grasses here, which have long since senesced because of the hot dry summer. Same as Coll. No. 2432.1. Northeast quadrant of Apex Park - North Parcel, high plains at the base of the Rocky Mountains foothills scarp, 4.63 km. south of the GNIS location of Golden. Tom Schweich 2434. 19 Aug 2020. ( JCOS s.n. OBI ) .

- South Table Mountain, On a lava capped mesa in the Denver Formation. South table Mt.;on mesatop near old road along east rim. 13N 0484000E 4400300N. Loraine Yeatts 2100. 28 Jul 1985. ( KHD21745 ) . .

Xanthium strumarium L.  Common Cocklebur. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, roadside along roadside, Golden Gate Canyon Golden end. 13N 0479519E 4402565N. Berta Anderson 1765. 23 Aug 1980. ( KHD23158 ) .

- Heritage Square, open gnd dry portion of ck bed 2 1/2 mi S of Golden. T R70W S10. Ernest H. Brunquist 42. 24 Aug 1959. ( CS23859 ) .

- South Table Mountain, S. Table mountain, edge of Quaker road; 13N 0484293E 4399631N. Loraine Yeatts 770. 7 Aug 1983. ( COLO00150466 KHD19710 ) .

Berberidaceae

Berberis repens Lindl.  (Syn: Mahonia repens (Lindl.) G. Don ) Creeping Barberry. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Gulch, Soil well-drained, fairly fertile, apparently. South side of Apex Creeck Canyon; west by southwest of dig, and about 1/4 mile form it. 13N 0481886E 4396586N. Ernest H. Brunquist 82. 17 Apr 1960. ( CS37500 KHD8435 ) .

- Colorado School of Mines Survey Field, South-facing steep slope of a ravine. Lomatium orientale also blooming here. West edge of Survey Field, 3.2 km. south southwest of the GNIS location of Golden. Tom Schweich 2012. 7 Apr 2019. ( CAS CDA KHD ) .

- Kinney Run, Thirty-eight meters east of and above the Kinney Run Trail, west side of the hogback in a small cove or old excavation that collects water, 3.12 km. south of the GNIS location of Golden. Tom Schweich 1782. 12 Apr 2018. ( COLO02348027 EIU KHD00068925 OBI ) .

- Lippincott Property, Slope under ponderosa pine growing around rocks. Tom Schweich 4/18/2019. Tom Schweich 7/13/2019. .

- Lookout Mountain, Abundant in pine forest ravines. Lariat Trail, Lookout Mountain. Hansford T. Shacklette 6656. 5 May 1962. ( COLO00857581 COLO00857599 ) Golden, Mount Lookout. Henrietta L. Zobel 11 May 1939. ( KHD8429 ) .

- North Table Mountain, as Mahonia r. Zeise, Larry Steven, 1976 .

- North Table Mountain Park, Few plants on strath above creek; many more plants at higher and drier locations. Just inside North Table Mountain Park, southeast side of North Table Mountain, about 150 m. northwest of the trailhead for the Neighborhood Access Trail at the corner of Ridge Road and Ulysses Avenue, 2.9 km northeast of the GNIS location of Golden. Tom Schweich 1309. 12 Apr 2016. ( JCOS s.n. KHD00064104 UC UCR277958 ) .

- Windy Saddle Park, Tom Schweich 5/4/2020. .

Betulaceae

Betula occidentalis Hook.  (Syn: Betula fontinalis Sarg. ) Water Birch. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Golden. William Huestis 1 Jul 1905. ( COLO00153650 ) . .

Carpinus betulus L.  European hornbeam. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, In Golden Colorado Near Coors. George W. Kelly 13 Sep 1949. ( KHD8524 ) . .

Corylus cornuta Marshall.  (Syn: Corylus cornuta Marshall var. cornuta ) Beaked Hazelnut. CalPhotos. Jepson eFlora. SEINet Taxon.

- Heritage Square, in shade of rocky outcrop. One mile From Peabody Museum (Harvard U.) a few yards from Apex Creek. 13N 0482243E 4396248N. Ernest H. Brunquist 117. 22 Jul 1960. ( CS37846 KHD8526 ) .

- North Table Mountain Park, Lower east slopes of North Table Mountain, along the North Table Loop north of the Mesa Top Trail, 1.57 km. northwest of the Easley Road trailhead; 4.56 km. northeast of the GNIS location of Golden. Tom Schweich 1520. 29 Jul 2016. Northeast slope of North Table Mountain. along the North Table Loop, almost directly downslope of the GNIS location of North Table Mountain, 4.56 km. northeast of the GNIS location of Golden Tom Schweich 1648. 1 Jun 2017. ( JCOS s.n. ) Determination tentative. Lower northeast slopes of North Table Mountain, adjacent to North Table Loop, which has the appearance of once having been a road at this location, 4.55 km. northeast of the GNIS location of Golden. Tom Schweich 1802. 8 May 2018. ( KHD00069133 ) .

Boraginaceae

Cryptantha virgata (Porter) Payson.  (Syn: Oreocarya virgata (Porter) Greene ) Miner"s Candle. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Plants of Colorado, American Botanical Exchange, 611 Wet Pierce Ave., Houston, TX, U.S.A.. Golden Colorado. 13N 0481213E 4400430N. Geo L Fisher 15 Jun 1929. ( KHD8432 ) .

- Lippincott Property, Gentle rocky southwest-facing slope with forest duff near edge of ponderosa pine woodland. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, southwest base of hogback in center of parcel, 22.4 km. north northwest of the GNIS location of Golden. Tom Schweich 2157. 13 Jul 2019. ( CAS CIBO JCOS s.n. KHD ) .

- Lookout Mountain, On exposed bank in schist and granite talus. Small mesa on the Lariat Trail, Lookout Mountain. Hansford T. Shacklette 6682. 19 May 1962. ( COLO00857136 COLO00857144 ) .

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, On top of the flat surface of a spoils pile from the basalt quarry to the west. Southwest portion of the top of North Table Mountain, across the North Table Loop from a large basalt quarry, 2.2 km. north of the GNIS location of Golden Tom Schweich 1403. 8 Jun 2016. ( JCOS s.n. KHD00063985 OBI83191 UCR277982 ) .

- North Washington Open Space, Observed on CoNPS field trip, coordinates approximate. Tom Schweich 6/10/2018. .

- South Valley Park, Tom Schweich 5/20/2020. .

- South Table Mountain, On sparsely vegetated south-facing clay slope. South Table Mountain; south-facing clay slope just west of Quaker Rd. UTM: 842993 Loraine Yeatts 502. 24 May 1983. ( COLO00171447 ) on hillside Northwest of gate (Quaker Road), 13N 0484302E 4399576N. Mary E. Edwards 431. 6 Jun 1983. ( KHD19220 ) .

- Tin Cup Ridge, Last year's flower stalk. Tom Schweich 3/20/2017. In a collapsed mined out vein. Near the top of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden,4.50 km. south southeast of the GNIS location of Golden. Tom Schweich 1873. 23 May 2018. ( KHD00069157 ) . .

Cynoglossum officinale L.  Gypsyflower. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, Tom Schweich 4/21/2020. Tom Schweich 5/18/2020. Tom Schweich 6/10/2020. Also seen or collected here: Juniperus scopulorum, Oenothera suffrutencens, Linaria dalmatica, and Agoseris parviflora. Colorado Noxious Weed List B. Northernmost quadrant of the parcel, north side of Deadman Gulch, right at the base of the Front Range scarp, 4.06 km. south of the GNIS location of Golden. Tom Schweich 2294. 26 Maay 2020. ( EIU JCOS s.n. KHD OBI ) .

- Colorado School of Mines Survey Field, Tom Schweich 5/25/2017. Tom Schweich 5/25/2017. High plains at the base of the Front Range, growing in dense vegetation along banks of a small creek. Colorado Noxious Weed List B. Eastern, lower section of the Survey Field, 2.2 km. south of the GNIS location of Golden. Tom Schweich 1434. 15 Jun 2016. ( CDA JCOS s.n. KHD00063992 UCR277997 ) .

- Kinney Run, Tom Schweich 7/6/2018. Plants in vegetative state only, determination tentative. Tom Schweich 4/12/2018. Small colony, along with Lithospermum arvense and Euphorbia peplus. Colorado Noxious Weed List B. Southeast slope of a small hill between Kinney Run and Deadman Gulch, near the junction of those two small streams, 2.89 km. south of the GNIS location of Golden. Tom Schweich 1827.1 16 May 2018. ( CAS COLO02347508 KHD00069160 UC ) .

- Magic Mountain, Tom Schweich 4/18/2018. .

- North Table Mountain, About a dozen plants, just beginning to bloom. Tom Schweich 5/8/2017. .

- Ranson/Edwards Homestead Open Space Park, Also collected nearby: Lithospermum occidentale, Toxicodendron rydbergii, and Thinopyrum intermedium. Colorado Noxious Weed List B. High plains above Rocky Flats, west 1.7 mi. on CO Hwy 72 from CO Hwy 93, generally north 1.0 mi. on Plainview Road, then 365 m. east into a thicket, primarily of Prunus virginiana, 19.6 km. north northeast of the GNIS location of Golden. Tom Schweich 2124. 6 Jul 2019. ( JCOS s.n. KHD OBI REGIS ) .

- South Table Mountain, a lava capped mesa in the Denver Formation. South Table Mountain, along trail on West facing slope south of Castle Rock. 13N 0483669E 4400436N. Loraine Yeatts 905. 6 Jun 1984. ( KHD39030 ) A lava capped mesa in the Denver Formation; clay substrate, at edge of small flowing stream in large Circium Patch. occassional to scattered; Survey of Golden Gate Canyon State Park--Colorado Native Plant Society [? -- Ed.] Front Range, South Table Mountain; 1st major North facing gully East of Castle Rock. 13N 0483130E 4399950N. Loraine Yeatts 1456. 4 Jun 1987. ( KHD25149 ) .

- Tin Cup Ridge, Among trees and shrubs. Colorado Noxious Weed List B. Near the top of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden,4.57 km. south southeast of the GNIS location of Golden. Tom Schweich 1870. 23 May 2018. ( CS ) . .

Ellisia nyctelea (L.) L.  Aunt Lucy. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Gulch, Apex Canon near Golden. C. F. Leach 8 Jun 1902. ( COLO 00785998 KANU60785 ) .

- North Table Mountain Park, Hidden in short mown grasses. Northwest side of North Table Mountain, in the road to the underground water tank 30 m. northeast of the tank and 60 m. west of the Mesa Top Trail, 3.5 km north of the GNIS location of Golden. Tom Schweich 1391. 1 Jun 2016. ( JCOS s.n. KHD00063843 ) . .

Heliotropium curassavicum L.  Seaside Heliotrope. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain Park, Southeast corner of a natural pond, in an opening between cattails. Plants first recognized in the field by Bob Legier. Top of North Table Mountain, along the Tilting Mesa Trail, 3.36 km. north northeast of the GNIS location of Golden. Tom Schweich 1959. 21 Jun 2018. ( KHD00069159 ) . .

Hydrophyllum fendleri (A. Gray) A. Heller.  CalPhotos. Jepson eFlora. SEINet Taxon.

- Colorado School of Mines Survey Field, Growing in deep grasses and forbs at the base of tall shrubs. Base of the Rocky Mountain Front Range, northeast-facing slope, above an unnamed stream in the south end of the Survey Field, 2.51 km. south of the GNIS location of Golden. Tom Schweich 1898. 28 May 2018. ( COLO02347565 KHD00069158 OBI170769 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Moist shady west-facing ravine. Southwest side of North Table Mountain, along City of Golden North Table Mountain Trail, 2.5 km. north of the GNIS location of Golden. Tom Schweich 1396. 8 Jun 2016. ( CAS JCOS s.n. KHD00063832 UC UCR277984 ) . .

Lappula occidentalis (S. Watson) Greene.  (Syn: Lappula redowskii (Hornem.) Greene ) Flatspine Stickseed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Waste places, vacant lots, Golden. J. H. Ehlers 7988. 18 May 1940. ( ARIZ87891 ) .

- Heritage Square, Growing in unshaded with grass, etc., in disturbed ground. Soil well drained. Northeast of the Dig, within 200 yards of it. 13N 0482235E 4396267N. Ernest H. Brunquist 87. 27 May 1960. ( KHD8799 ) .

- Kinney Run, Tom Schweich 5/15/2020. .

- North Table Mountain, as Lappula redowskii (Hornem.) Greene Kilburn, Paul D., and Sally L. White, 1992 .

- South Valley Park, Tom Schweich 5/20/2020. .

- South Table Mountain, South Table Mountain, flat Mesa top near west edge, near powerline. 13N 0484293E 4399631N. Loraine Yeatts 542. 1 Jun 1983. ( KHD19484 ) a lava capped mesa in Denver Formation. With shrubs on short, steep East facing slope. South Table Mountain. 13N 0484099E 4400200N. Loraine Yeatts 2000. 19 May 1985. ( COLO00158923 KHD24442 ) .

- Tucker Gulch (lower), Tom Schweich 5/12/2020. . .

Lappula occidentalis (S. Watson) Greene var. cupulata (A. Gray) Higgins.  (Syn: Lappula redowskii (Hornem.) Greene var. cupulata (A. Gray) M. E. Jones ) Crowned Stickseed. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain Park, Open grassland on south-facing slope. Southeast base of North Table Mountain, along the neighborhood access trail, 195 m. northwest of the trailhead at the corner of Ridge Road and Ulysses Way, 2.9 km. northeast of the GNIS location of Golden Tom Schweich 1346. 12 May 2016. ( KHD00068374 UCR278794 ) .

- Ranson/Edwards Homestead Open Space Park, Among short grasses and forbs on a drier, gravelly alluvial ridge. High plains above Rocky Flats, 15.8 km. north northwest of the GNIS location of Golden, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.4 mi. north on Plainview Road, then 340 m. north of Plainview Road. Tom Schweich 1378. 29 May 2016. ( EIU022395 JCOS s.n. KHD00063826 ) .

- Tin Cup Ridge, On the bank of a ditch cut on contour of the slope. Middle east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.65 km. south southeast of the GNIS location of Golden. Tom Schweich 1869. 23 May 2018. ( CAS JCOS s.n. KHD00069156 UCR ) . .

Lithospermum arvense L.  (Syn: Buglossoides arvensis (L.) I. M. Johnst. ) Corn Gromwell. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, to 30 cm., hairs appressed with pustular bases; Stem, some branched distally; Leaves, basal and cauline, basal, petiole 5 mm. + blade 13 mm. × 3.5 mm. wide, slightly obovate, margin entire, hairs as above, withering, cauline, alternate, sessile, 19 mm. × 3.7 mm. wide, margin entire, hairs as above; Calyx, lobes, 5.2 mm. × 0.7 mm. wide, enlarged in fruit to 7 mm., hairs as above; Corolla, tube 4 mm. + throat 1 mm. + lobes 1.5 mm., blue to white, abaxial spreading hairy; Stamens, attached in tube; Style, 1.2 mm., Nutlets, #(1-2) 3 (4), 2.8 mm. × 2 mm. wide, green - tan, tuberculed (Described from Coll. No. 1783 and Coll. No. 1827).

- Cressmans Gulch (lower), Also collected here: Poa pratensis, Secale cereale, Linum lewisii, and Lupinus argenteus. Northwesternmost Golden, between Pine Ridge Road and Dakota Ridge, on a terrace above Cressmans Gulch, 4.50 km. north northwest of the GNIS location of Golden. Tom Schweich 2351.1 12 Jun 2020. ( Golden ) .

- Kinney Run, Tom Schweich 4/12/2018. Distributed with 1827. 2.89 km. south of the GNIS location of Golden. Tom Schweich 1783. 12 Apr 2018. ( Golden ) The small plants are my collection no. 1783, made 12 April 2018, from the same population. Southeast slope of a small hill between Kinney Run and Deadman Gulch, near the junction of those two small streams, 2.89 km. south of the GNIS location of Golden. Tom Schweich 1827. 16 May 2018. ( CDA COLO02348670 JCOS s.n. KHD00069154 UCR ) .

- Matthews/Winters Park, In a dry grassy meadow with Alyssum parviflorum. Weedy annual locally common to abundant. Mathews/Winter Parks: About 0.2 mile from Red Rocks trailhead near a historic cemetery. Verbatim Coordinates: 13 0482288E 4392315N 7.5' Morrison quad. T4S R70W SEC27 Judy King, with Linda Senser; Stan Smookler 2. 4 May 2009. ( KHD47888 ) Duplicates Judy King collection 4 May 2009, KHD47888. Also collected in Kinney Run, Golden, my Coll. Nos. 1783 and 1827. Beside the Village Walk Trail, near the Mount Vernon Cemetery, 7.25 km. south of the GNIS location of Golden Tom Schweich 1788. 19 Apr 2018. ( CAS CDA COLO02348191 EIU JCOS s.n. KHD00069155 OBI124854 UC UCR ) . .

Lithospermum incisum Lehm.  Narrowleaf Stoneseed. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial … cleistogamic flowers present, in fruit usually with recurved pedicels. Flowers monomorphic.

- Apex Park - Northern Parcel, Only one seen. Tom Schweich 5/18/2020. .

- Colorado School of Mines Survey Field, Southern part of the Survey Field, high plains at the base of the Rocky Mountain Front Range, 3.23 km. south of the GNIS location of Golden 2365.1 20 Jun 2020. One of the few locations with a high density of this taxon. Tom Schweich 5/25/2017. High plains at the lowest slopes of Lookout Mountain, northwest corner of the Survey Field, near Lookout Mountain Road, 1.90 km. southwest of the GNIS location of Golden. Tom Schweich 1603. 13 May 2017. ( COLO02347490 EIU ) In short grass on alluvial mesa. High plains below Lookout Mountain (Rocky Mountain Front Range), about 80 meters northwest of the intersection of Fox Hollow Lane with Eagle Ridge Drive, 2.5 km. south of the GNIS location of Golden. Tom Schweich 1629. 25 May 2017. ( CDA KHD00065497 ) .

- Lippincott Property, Edge of ponderosa pine woodland exposed to prairie to the south. Northernmost Jefferson County, parcel jointly owned by City of Boulder and Jefferson County Open Space, north-central area of parcel, 22.7 km. north northwest of the GNIS location of Golden. Tom Schweich 2067. 6 Jun 2019. ( CIBO JCOS s.n. OBI REGIS ) .

- Lookout Mountain, In grassy places. Lookout Mountain. 13N 0479712E 4397509N. Unknown 4 Jul 1922. ( KHD37397 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 One plant seen. Tom Schweich 5/8/2017. .

- North Table Mountain Park, Northwest-facing slope, a little drier than surrounding area. Northwest base of North Table Mountain, about 150 m. upslope of the North Table Loop, 3.5 km north of the GNIS location of Golden. Tom Schweich 1382. 1 June 2016. ( JCOS s.n. KHD00063831 UC UCR277981 ) On top of the flat surface of a spoils pile from the basalt quarry to the west. Uncommon, very widespread, but seldom seen, and never in large numbers. Southwest portion of the top of North Table Mountain, across the North Table Loop from a large basalt quarry, 2.2 km. north of the GNIS location of Golden. Tom Schweich 1406. 8 Jun 2016. ( CS EIU JCOS s.n. ) .

- North Washington Open Space, One plant seen. Tom Schweich 5/2/2017. Uncommon, scattered throughout parcel; these from top of hill. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1617. 15 May 2017. ( COLO02347938 KHD00065499 ) .

- Ranson/Edwards Homestead Open Space Park, High plains merging into Ponderosa pine woodland, 2.2 miles on Plainview Road north of CO State Highway 72, then 20 m. west of Plainview Road, 16.3 km north northwest of Golden. Tom Schweich 1124. 28 May 2015. ( KHD56964 ) .

- South Table Mountain, On southwest gentle slope in grassy meadow. South Table Mountain, Southwest slope. 13N 0483600E 4400300N. Loraine Yeatts 546. 1 Jun 1983. ( COLO 00160275 KHD19221 ) .

- Tin Cup Ridge, Lower east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.83 km. south southeast of the GNIS location of Golden. Tom Schweich 1862. 23 May 2018. ( CAS JCOS s.n. KHD00069153 ) . .

Lithospermum multiflorum Torrey ex A. Gray.  Many Flowered Stoneseed. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial … cleistogamous flowers absent. Flowers heterostyled and dimorphic.

- Little Scraggy Peak, Also collected here: Ipomopsis aggregata ssp. collina, Geranium caespitosum, and Koeleria macrantha. Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, fairly close to Little Scraggy trailhead, about 4 mi. south of town of Buffalo Creek by Cty Rd 126, 60 km. south of the GNIS location of Golden. Tom Schweich 2175. 23 Jul 2019. ( COLO KHD OBI UCR ) .

- Ranson/Edwards Homestead Open Space Park, Georeference Remarks: I plotted the UTM along the section line of sections 7 and 18 at 6451 ft and increased the CV to 5 to include sections 17 and 18. RA Ranson/Edwards Park/N. of Road 72; E of Plainview. Donald L. Hazlett 10918. 9 Jun 1999. ( COLO00368647 ) Adjacent to a colony of Canada thistle. High plains above Rocky Flats, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.2 mi. generally north on Plainview Road, then 500 m. east along a terrace on the north side of an ephemeral stream, 19.9 km. north northwest of the GNIS location of Golden. Tom Schweich 2376. 23 Jun 2020. ( CS JCOS s.n. KHD UC ) . .

Lithospermum occidentale (Mack.) Weakley, Witsell & D. Estes.  (Syn: Onosmodium bejariense DC. ex A. DC. var. occidentale (Mack.) B. L. Turner , Onosmodium molle Michx. ) Western Gromwell nee Marbleseed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, Tom Schweich 5/26/2020. .

- Colorado School of Mines Survey Field, On a small terrace beside an ephemeral creek. Eastern, lower section of the Survey Field, between US Highway 6 and Lookout Mountain, 2.2 km. south of the GNIS location of Golden. Tom Schweich 1438. 15 Jun 2016. ( CAS KHD00064006 UCR278001 ) .

- Golden, United States of America, Colorado, Boulder Co. (sic), Golden. N. L. Britton 8 Oct 1882. ( BY21638 ) .

- Lippincott Property, East-facing swale; also collected here: Calochortus gunnisonii and Claytonia rosea. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, open prairie in southeast portion, 21.8 km. north northwest of the GNIS location of Golden. Tom Schweich 2107. 1 Jul 2019. ( CIBO JCOS s.n. KHD REGIS ) .

- North Table Mountain, as Onosmodium molle Michx. Kilburn, Paul D., and Sally L. White, 1992 Highest prairie mixed with foothill shrubs, also collected nearby: Aegilops cylindrica, Hesperostipa comata, Sphaeralcea coccinea, Linaria dalmatica, and Thinopyrum intermedium. Lower southwest slopes of North Table Mountain, along the lower portion of the City of Golden North Table Mountain trail, 1.9 km. north of the GNIS location of Golden. Tom Schweich 2052. 4 Jun 2019. ( CDA JCOS s.n. KHD OBI ) .

- Ranson/Edwards Homestead Open Space Park, One plant, in bloom, others nearby, not blooming. Tom Schweich 6/3/2018. Between two thickets of Prunus virginiana on the same break in slope. Collected nearby: Thinopyrum intermedium; observed nearby: Toxicodendron rydbergii. High plains above Rocky Flats, west 1.7 mi. on CO Hwy 72 from CO Hwy 93, generally north 1.0 mi. on Plainview Road, then 400 m. east to a small break in slope, 19.6 km. north northeast of the GNIS location of Golden. Tom Schweich 2125. 6 Jul 2019. ( COLO JCOS s.n. KHD UC ) .

- South Table Mountain, On south facing slope below mesa edge; recent burn site, among lava boulders. South Table Mountain.13N 0484200E 4399200N. Loraine Yeatts 601. 27 Jun 1983. ( BRY0193293 COLO00179226 KHD19223 ) South facing slope below mesa edge among lava boulders. Collected earlier in season from same patch. South Table Mountain. 13N 0484200E 4399200N. Loraine Yeatts 836. 9 Sep 1983. ( COLO00179218 KHD19224 ) . .

Mertensia lanceolata (Pursh) DC.  Prairie Bluebells. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, with spreading-ascending branches to 20 cm.; Stem, glabrous; Leaves, basal and cauline, basal, petiole 55 mm. + blade 50 mm. × 12.5 mm. wide, lanceolate, distinct lateral veins, papillate adaxially, margin, entire, appressed ciliate; cauline, sessile, 40 mm. × 4 mm. wide, without distinct lateral veins, papillate to strigose (oriented toward apex) adaxially, margin, entire, appressed ciliate; Inflorescence, panicle; Calyx, not divided to base, tube 1.5 mm. + lobes 2-3 mm.; Corolla, tube 4.0-6.5 mm. + lobes 4.5-7.5 mm., free 2.0 mm., limb 5-10 mm., deciduous, blue, small tufts or a ring of hairs near (2.2 mm.) base of throat; Stamens, #5-6, inserted, attached just below (0.5 mm.) throat/fornices; Filaments, 2.0-3.5 mm. filaments ≥ anthers; Anthers, 1.8-2.3 mm., versatile, yellow; Ovary, 0.7 mm. × 1.3 mm. wide, partially fused to calyx; Style, 7.0-7.5 mm., single, ±≥anthers; Stigma, simple; Fruit, #4 nutlets, 1.7 mm. × 1.5 mm. wide. (Described from Coll. Nos. 1906 & 2035.)

- Apex Park - Northern Parcel, Openings in ponderosa pine woodland, also seen here; Mondarda fistulosa, Berberis reptans, and Delphinium nuttallii. Northwest corner of Apex Park, east-facing slope north of Deadman Gulch, 4.60 km south southeast of the GNIS location of Golden. Tom Schweich 2260. 6 May 2020. ( COLO JCOS s.n. KHD ) .

- Colorado School of Mines Survey Field, High plains at the lowest slopes of Lookout Mountain, northwest corner of the Survey Field, near Lookout Mountain Road, 1.95 km. southwest of the GNIS location of Golden. Tom Schweich 1608. 13 May 2017. ( CDA KHD00065378 ) .

- Golden, plains W of Golden. R. Duthie 523. 31 May 1920. ( CS27538 ) .

- Kinney Run, Tom Schweich 5/15/2020. .

- Lippincott Property, Deep ponderosa pine forest duff. Jointly owned by City of Boulder OSMP and Jefferson County Open Space, north of Bull Gulch about half way to north boundary, west side of ridge, 23.3 km. north northwest of the GNIS location of Golden. Tom Schweich 2035. 26 May 2019. ( CIBO EIU JCOS s.n. REGIS ) .

- Little Scraggy Peak, Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 46.5 km. south of the GNIS location of Golden. Tom Schweich 1906. 31 May 2018. ( CAS KHD00069152 OBI170747 ) .

- Lookout Mountain, 13N 0479604E 4397913N Unknown 30 May 1914. ( KHD37378 ) .

- Mount Falcon Park, West-facing, grassy slope of small unnamed hill, 630 m north northwest of Mt. Falcon, approximately 13.5 km south of Golden. Tom Schweich 1129. 1 Jun 2015. ( KHD56962 ) .

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Growing in afternoon shade of a small point of rocks, southeast exposure, more along the trail above. Along the lower portion of the Golden Cliffs Trail, about 200 m. from the parking lot and trailhead,1.5 km. northeast of the GNIS location of Golden. Tom Schweich 1320. 4 May 2016. ( JCOS s.n. KHD00063818 UC UCR277961 ) .

- North Washington Open Space, Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue. North-central portion of open space on northeast slopes. Tom Schweich 1595. 2 May 2017. ( CS KHD00065387 ) .

- Ranson/Edwards Homestead Open Space Park, Wet alluvial slope above Coal Creek, Stevens parcel immediately south of Ranson/Edwards parcel, 3.55 km west southwest of the GNIS location of Rocky Flats Tom Schweich 1325. 5 May 2016. ( CAS JCOS s.n. KHD00063820 ) .

- South Valley Park, Also collected here: Quercus gambelii, Scutellaria brittonii, Collinsia parviflora, and Toxicoscordion paniculatum. Between the Coyote Song Trail and the sandstone cliffs on the east side of the park, 4.81 km. west northwest of Chatfield Farms, Denver Botanic Garden. Tom Schweich 2290. 20 May 2020. ( CDA JCOS s.n. KHD REGIS ) .

- South Table Mountain, South table mountain, along Quaker Road on east facing roadcut. 13N 0484301E 4399905N. Loraine Yeatts 495. 16 May 1983. ( KHD19222 ) South facing slope near local high point among lava boulders. S. Table Mt. UTM: 840993. Loraine Yeatts 505. 24 May 1983. ( BRY0182931 COLO00164830 ) .

- Tin Cup Ridge, Mostly around base of juniper and mountain mahogany at this location. Along the top of “Tin Cup Ridge,” the northward extension of Dinosaur Ridge into Golden, 5.5 km. south of the GNIS location of Golden. Tom Schweich 1358. 21 May 2016. ( COLO02348530 CS JCOS s.n. OBI83172 UC UCR278786 ) . .

Myosotis micrantha Pall. ex Lehm.  Small-Flowered Forget-Me-Not. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lippincott Property, Deep forest duff in ponderosa pine woodland, with Collomia linearis, Eriogonum umbellatum, Hypericum perforatum, and Campanula rotundifolia. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, southwest corner near the railroad tracks, 22.3 km. north northwest of the GNIS location of Golden. Tom Schweich 2154. 13 Jul 2019. ( KHD ) . .

Phacelia hastata Douglas ex Lehm.  Silverleaf Phacelia. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Foothills. Near Golden. Marcus E. Jones 253. 17 Jun 1878. ( RM469462 ) . .

Phacelia heterophylla Pursh.  Varileaf Phacelia. CalPhotos. Jepson eFlora. SEINet Taxon.

Described by Pursh (1814) from a collection by M. Lewis Jun-Jul, 1806 on the banks of the Kooskooskie (Clearwater) River.

- Lippincott Property, Open ponderosa pine woodland with a lot of cheatgrass. Subspecies heterophylla if infraspecific names are to be applied, as this is not the subspecies virgata found in northern California and Oregon. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, narrows of the parcel between central and southeast portions, 22 km. north northwest of the GNIS location of Golden. Tom Schweich 2081. 17 Jun 2019. ( CIBO JCOS s.n. KHD OBI ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Zeise, Larry Steven, 1976 .

- North Table Mountain Park, Trailside, in colluvium at base of steep slope, along the Mesa Top Trail, just below the east rim of North Table Mountain, 3.8 km northeast of the GNIS location of Golden. Tom Schweich 1138. 9 Jun 2015. ( CAS JCOS s.n. KHD56844 UC UCR265714 ) .

- South Table Mountain, A lava capped mesa in the Denver Formation; S. facing slope; occasional. South Table Mountain, W. of Quaker Road. 13N 0484293E 4399631N. Loraine Yeatts 603. 27 Jun 1983. ( KHD20699 ) A lava capped mesa in the Denver Formation. On S.W. facing slope above gully with Cercocarpus. Occasional. S. Table Mt. UTM: 827002. Mary E. Edwards 434. 1 Jun 1983. ( COLO00411298 ) . .

Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnst. var. hispidulus (Greene) Dorn.  (Syn: Plagiobothrys scouleri (Hook. & Arn.) I.M. Johnst. var. penicillata (Greene) Löve ) Scouler's popcornflower. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, to 10 cm., ±appressed hairy throughout; Stem, decumbent to ascending, not winged; Leaves, basal, unknown, cauline, alternate, 35 mm. × 2.5 mm. wide, linear; Calyx, lobes #4, in fruit, 3 mm.; Corolla, very small, white; Style, 0.4 mm., entire; Nutlets, #4, 1.8 mm., attachment baso-lateral, tuberculed abaxially (not hooked or barbed). Treated as ssp. penicillata in Weber&Wittmann (2012), at rank of species in California (Baldwin, et al., 2012). (Described from Coll. No. 1452, 22 June 2016).

- North Table Mountain Park, In shallow water of permanent pond. North Table Mt., ca. 1.5 mi NE of Golden. TRS: T3S R70W SEC22 Rick Brune 14 May 1992. ( COLO00172270 ) Drying mud, bottom of a small reservoir. Top of North Table Mountain, along the Tilting Mesa Trail, 2.64 km. north northeast of the GNIS location of Golden. Tom Schweich 1958. 21 Jun 2018. ( JCOS s.n. KHD00069151 OBI170763 UC ) Ephemeral pond indicated on Golden 7.5' quadrangle may have been natural, but has also been enhanced with a low dam on the southwest side. Top of North Table Mountain, at the northeast edge of a small ephemeral pond, 2.4 km. north northeast of the GNIS location of Golden. Tom Schweich, with Greg McKittrick 1452. 22 Jun 2016. ( CS JCOS s.n. KHD00063980 ) .

- Ranson/Edwards Homestead Open Space Park, Muddy flat with sheet flow water. High plains above Rocky Flats, 1.7 miles west on Colorado Highway 72 from Colorado Highway 93, 1.0 mile north on Plainview Road, then 350 m. east to a terrace overlooking Coal Creek. Tom Schweich 1689.2 28 Jun 2017. ( KHD00065582 ) .

- South Table Mountain, Lava capped mesa in the Denver formation; in mud near edge of shallow ephemeral pond on mesatop; with Limosella aquatica, Barbarea orthoceras. South Table Mountain. 13N 0483530E 4399920N. Loraine Yeatts 4267. 8 Jun 1999. ( KHD33482 ) .

Brassicaceae

Alyssum alyssoides (L.) L.  CalPhotos. Jepson eFlora. SEINet Taxon.

- Lippincott Property, Margin of a small meadow in saddle between hogback and flatiron. Very wet. Collected with Veronica arvensis and V. biloba. Northernmost Jefferson County, parcel jointly owned by City of Boulder and Jefferson County Open Space, approximate centroid of parcel, 22.3 km. north northwest of the GNIS location of Golden. Tom Schweich 2063.2 6 Jun 2019. ( JCOS s.n. ) .

- North Table Mountain, Zeise, Larry Steven, 1976 . .

Alyssum simplex Rudolphi.  (Syn: Alyssum minus Rothm. , Alyssum parviflorum Fisch. ex M.Bieb. ) European Madwort. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, tap-rooted, to 12-30 cm., stellate hairy throughout (typically doubly branched and 8-pointed); Stem branched at base, ascending; Leaves basal, withered at flowering, appear compound, cauline, alternate, 14-28 mm. × 3.5-5.0 mm., oblanceolate, margin entire, tip acute, sessile or vaguely short-petioled; Inflorescence not bracted; Pedicels, in fruit, 4.5 mm.; Sepals, 4, 2 mm. × 0.7 mm. wide, deciduous in fruit; Petals 2.9-3.0 mm., yellow fading white,clawed, entire to tip slightly notched; Stamens, 2.5-2.6 mm.; Filaments, 2.3 mm., winged proximal 1.5-1.8 mm., not toothed; Style persistent, 1.3 mm., few hairs at base; Fruit round, 3.5-5.0 mm. × 5.6 mm. wide, margin entire, compressed parallel to the replum, hairy, hairs thinning as fruit matures; Ovules, 4 (most keys and descriptions say 2 when they give a specific number, but the genus is described as having 1-2[4] ovules). (Described from Clyde Golden, 25 Jun 2011, Coll. No. 1090, 30 Apr 2015, and Coll. No. 1367, 24 May 2016).

- Apex Park - Northern Parcel, Tom Schweich 4/21/2020. Also collected nearby: Penstemon secundiflorus, Castilleja integra, Erigeron tracyi, Scorzonera laciniata, and Allium textile. Northernmost quadrant of the parcel, steep slope part way up the initial Front Range scarp, along the edge of an old road, now an elk trail, 4.02 km. south of the GNIS location of Golden Tom Schweich 2300.2 26 May 2020. ( JCOS s.n. KHD ) .

- Colorado School of Mines Survey Field, Northern part of Survey Field, along the access road to the City of Golden water tank, 210 m from Lookout Mountain Road, 2 km south southwest of the GNIS location of Golden. Tom Schweich 1302. 9 Apr 2016. ( KHD00063635 OBI83182 UCR277954 ) .

- Golden, Fields and waste places. Golden. J. H. Ehlers 7985. 18 May 1940. ( RM492629 ) .

- Magic Mountain, Tom Schweich 4/18/2018. .

- Mount Galbraith Park, In the saddle near the top of Nightbird Gulch trail. Tom Schweich 1098. 3 May 2015. ( JCOS s.n. ) .

- North Table Mountain, as A. minus Rothm. Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Lower west slopes of North Table Mountain, on the City of Golden's North Table Mountain Trail, which is also the access road to a water tank, 75 m south of the North Table Loop. Tom Schweich 1090. 30 Apr 2015. ( CAS JCOS s.n. KHD56939 UC2045769 UCR265980 ) Larger plants here amidst grasses, mostly smooth brome. Lower west-facing slopes of North Table Mountain, off the North Table Loop, 500 m. north of the trailhead off CO Highway 93, 3.5 km. north of the GNIS location of Golden. Tom Schweich 1367. 24 May 2016. ( COLO02348506 CS JCOS s.n. UC ) .

- North Washington Open Space, Tom Schweich 3/27/2017. East-facing slope. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1613. 15 May 2017. ( COLO02347888 EIU KHD00065122 ) .

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 1.7 miles west on Colorado Highway 72 from Colorado Highway 93, then 0.9 miles north on Plain View Road, to an old ranch road. Roadside and among short grasses, older terrace of Coal Creek. Tom Schweich 1597. 4 May 2017. ( CAS CDA JCOS s.n. KHD00065385 ) .

- South Table Mountain, On south facing slope below mesa edge under open cover of Cercocapus montanus. 3 plants locally, South Table Mountain. 13N 0484293E 4399631N. Loraine Yeatts 346. 28 Feb 1983. ( KHD19723 ) South facing slope just west of Quaker road below mesa edge. South Table Mountain. 13N 0484293E 4399631N. Loraine Yeatts 464. 2 May 1983. ( COLO00173088 KHD19724 ) . .

Arabis pycnocarpa M. Hopkins var. pycnocarpa.  (Syn: Arabis hirsuta (L.) Scop. , Arabis hirsuta (L.) Scop. var. pycnocarpa (M. Hopkins) Rollins ) Cream Flower Rockcress. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain Park, In shrubby area. North Table Mountain, south side, near Golden. 13N 0481425E 4402103N. Stanley Smookler 23 May 1993. ( KHD39068 ) .

- Ranson/Edwards Homestead Open Space Park, Along a low ridge that is a little drier and rockier than surrounding grass land; moss growing on bare soil. This is apparently the only name that remains in Arabis in Colorado. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 570 m. northeast past the old homestead, about 15.9 km. north of the GNIS location of Golden. Tom Schweich 1836. 17 May 2018. ( JCOS s.n. KHD00068474 UCR ) .

- South Table Mountain, A lava capped mesa in the Denver Formation, on North facing vertical barren, 50 ft cliff face above seep, in crevices; with Cheilanthes feei. occassional; NPS Herbarium of Rocky Mountain National Park, Cat. No. ROMO-008721, Acc. No.ROMO-00887 KHD, [??? - Ed.] South Table Mountain. 13N 0483230E 4401000N. Loraine Yeatts 2232. 8 May 1990. ( KHD28292 ) Only few plants in crevices on n. facing vertical, barren, 50 ft. cliff face, above seep; with Cheilanthes feei. Front Range, S. Table Mt., a lava capped mesa in the Denver formation. UTM: 8323E 0100N. Loraine Yeatts 2394. 18 Jun 1990. ( COLO00172551 ) .

- Tin Cup Ridge, In open areas among brush and trees. Near the top of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden,4.57 km. south southeast of the GNIS location of Golden. Tom Schweich 1872. 23 May 2018. ( CAS EIU JCOS s.n. KHD00068473 ) . .

Barbarea vulgaris R. Br.  Garden Yellowrocket. CalPhotos. Jepson eFlora. SEINet Taxon.

Probably a biennial or perennial, to 40 cm., terrestrial but growing in flowing water, glabrous throughout; Leaves, lower cauline, 150 mm. × 45 mm. wide, pinnafitid, lyrate, lobes, #9, terminal lobe 47 mm. × 40 mm. wide, auriculate, auricles, glabrous, leaves reduced upward, upper cauline, sessile, 35 mm. × 18 mm. wide, lobes, 3; Inflorescence, not bracted; Flowers, radial; Sepals, 2.5 mm. × 1.8 mm. wide, ovate, rows, #1, color, yellow; Petals, 6 mm., obovate, claw not conspicuously differentiated from blade, margin, entire, color, yellow; Stamens, #6; Filaments, 4 mm., plain; Anthers, 1 mm.; Fruit, pedicels, 5 mm., glabrous, mature, 19.5 mm. × 0.5 mm. wide, spreading, glabrous. (Described from Coll. No. 1818, 16 May 2018.)

- Colorado School of Mines Survey Field, High plains below Lookout Mountain (Rocky Mountain Front Range), about 265 meters northwest of the intersection of Fox Hollow Lane with Eagle Ridge Drive, 2.37 km. south of the GNIS location of Golden. Beside a small creek tributary to Deadman Gulch.. Tom Schweich 1634. 25 May 2017. ( CDA KHD00065121 ) .

- Kinney Run, Growing in flowing water. In a tributary to the locally named “Kinney Run,” recognized by the BGN as Deadman Gulch, 2.8 km. south of the GNIS location of Golden. Tom Schweich 1818. 16 May 2018. ( CDA JCOS s.n. KHD00068472 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 1.7 miles west on Colorado Highway 72 from Colorado Highway 93,1.0 mile north on Plainview Road, then 400 meters east to the lower terrace of Coal Creek. Tom Schweich 1599. 4 May 2017. ( JCOS s.n. KHD00065400 ) .

- South Table Mountain, Wet spot by intermittent stream; uncommon. S. Table Mt., a lava capped mountain in the Denver Formation; by intermittent stream at top of telephone cable right of way at head of major E. facing gully overlooking Rolling Hills Country Club. UTM: 841003. Peter G. Root 852. 9 May 1985. ( COLO00173765 ) . .

Berteroa incana (L.) DC.  Hoary Alyssum. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual terrestrial herb, to 50 cm.; Leaves, cauline, elliptical, 20 mm. × 5 mm.; Flowers, not bracteate; Petals, 4, white, deeply bilobed; Style, 1.4 mm. in young fruit; Fruit, elliptical, 7 mm. × 4 mm. wide × 2 mm. thick, flattened parallel to papery internal partition.

- Apex Gulch, Also collected here: Potentilla recta, Verbascum thapsus, and Vicia villosa. This area was extensively collected by E. H. Brunquist in 1959-1960 during the Peabody Museum excavation at Magic Mountain. B. incana was not collected at that time. Terrace on the north bank of Apex Gulch, between Fire Station 4 and the Kinney Run Trail bridge, 5.72 km. south of the GNIS location of Golden. Tom Schweich 2129. 8 Jul 2019. ( CDA JCOS s.n. KHD OBI ) .

- Little Scraggy Peak, Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 0.60 km. southwest of the Little Scraggy trailhead, 61.2 km. south of the GNIS location of Golden. Tom Schweich 2244. 16 Sep 2019. ( COLO CS KHD REGIS ) .

- Tucker Gulch (lower), Common within the city limits of Golden, along the creek of Tucker Gulch and the Tucker Gulch Trail, about 250 m. north of the First Street Bridge, and 350 m. south southwest of Ford Street. Tom Schweich 1056. 10 Aug 2014. ( CAS UC2045782 UCR266873 ) . .

Boechera fendleri (S.Watson) W.A.Weber.  (Syn: Arabis fendleri (S. Watson) Greene ) Fendler's rockcress. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial (short-lived?), terrestrial, herb, tap-rooted, to 50 cm., branched hairs proximally, glabrous distally; Leaves, basal, petiole 9 mm. + blade 19 mm. × 5.5 mm. wide, oblanceolate, entire, hairs 3-4 branches, cauline sessile, spear-shaped, 21 mm. × 4 mm. wide, auriculate, 1.0-1.5 mm.; Inflorescence, raceme, 125 mm.; Sepals, #4, 4 mm., ovate; Petals, #4, 6 mm., entire, lavender; Stamens, #6; Filaments, 3 mm., narrowly winged; Anthers, 1.5 mm.; Fruit, pedicels, 10 mm., glabrous, 50 mm. × 0.8-1.0 mm. wide, recurved; Ovules, many, biseriate (Described from Coll. No. 1812, 10 May 2018).

- North Table Mountain Park, Lowest north slopes of North Table Mountain, on a small flat that appears to be a landslide run-out, 4.8 km. north northeast of the GNIS location of Golden. Tom Schweich 1812. 10 May 2018. ( CAS JCOS s.n. KHD00068471 OBI UCR ) .

- Ranson/Edwards Homestead Open Space Park, Along a low ridge that is a little drier and rockier than surrounding grass land; moss growing on bare soil. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 700 m. northeast past the old homestead, about 15.9 km. north of the GNIS location of Golden. Tom Schweich 1839. 17 May 2017. ( COLO02347706 JCOS s.n. KHD00068470 ) .

- South Table Mountain, A lava capped mesa in the Denver Formation, In flat meadow on North edge of mesatop with Microsteris gracilis, grasses and sedge. Label say S16, UTM actually in S17, corrected., South Table Mountain. 13N 0483300E 4400850N. Loraine Yeatts 1393. 7 May 1987. ( COLO00175372 KHD24508 ) . .

Brassicaceae   Mustard Family. CalPhotos. Jepson eFlora. SEINet Taxon.

- Tucker Gulch (lower), On a small slump beside the creek. Along the Tucker Gulch recreational trail, 1.52 km north northwest of the GNIS location of Golden Tom Schweich 1335. 11 May 2016. . .

Camelina microcarpa Andrz. ex DC.  Little-Podded False Flax. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, terrestrial, herb, 45 cm. to 80 cm. tall; Stem, erect, mostly single, some branched mid-stem, proximal, simple and forked hairs, distal, glabrous; Leaves, basal, absent or withered, cauline, #11-25, sessile, distal basally lobed 1.2 mm., 26-62 mm. × 6.5-10 mm. wide, reduced above, lanceolate, hairs simple and forked; Inflorescence, to 220 mm. × 35 mm. wide, not bracted, not one-sided; Flowers, radial; Pedicels, 4-8 mm., glabrous; Sepals, #4, rows, #1, 2.4-2.7 mm. × 0.8-1 mm. wide, ovate, color, green, margin chartaceous, tip purplish, abaxially hairy; Petals, 3.7-4.0 mm. × 0.7-0.9 mm. wide, oblong-spatulate, margin, entire, color, yellow; Stamens, #6, 3 mm.; Filaments, plain or maybe very narrowly winged; Anthers, 0.7 mm., ovate; Ovary, 1.8 mm. × 0.9 mm. wide; Style, 0.8 mm.; Stigma, capitate, 0.4 mm. wide; Fruit (mature), pedicels, 15 mm., 3 × than fruit, spreading, 5 mm. × 3.2-3.5 mm. wide, wider above middle, somewhat flattened, parallel to replum, coriaceous, short-winged (or strong-margined), valve mid-vein apparent but not prominent; Seeds, many, 1.0 mm. × 0.7 mm. wide, angled, papillate (Described from Coll. No. 1876 and 1883).

- Colorado School of Mines Survey Field, Southern part of Survey field, about half-way down northwest-facing bank of an unnamed watercourse, 2.49 km. south of the GNIS location of Golden. Tom Schweich 1883. 28 May 2018. ( COLO02347664 CS KHD00068468 OBI170767 UC ) .

- Golden, Foothills. Near Golden. Marcus E. Jones 298. 25 Jun 1878. ( COLO00916049 RM494791 ) .

- Lippincott Property, Open ponderosa pine woodland with a lot of cheatgrass. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, narrows of the parcel between central and southeast portions, 22 km. north northwest of the GNIS location of Golden. Tom Schweich 2081.1 17 Jun 2019. ( CIBO JCOS s.n. KHD ) .

- Lookout Mountain, Transferred from USGS Herbarium, Denver, CO (2005). Lariat Trail, Lookout Mountain. Hansford T. Shacklette 6652. 5 May 1962. ( COLO00858506 ) .

- North Table Mountain Park, Smooth brome-infested grasslands on the lower northwest slope of North Table Mountain, just off North Table Loop in the direction of Ramstetter Reservoir, 3.7 km. north of the GNIS location of Golden. Tom Schweich 1876. 24 May 2018. ( CAS CDA JCOS s.n. KHD00068469 ) .

- North Washington Open Space, One plant, next to Rhus trilobata Tom Schweich 5/25/2019. .

- South Table Mountain, On downed aspen tree along trail to Spencer Lake. South Table Mountain, on west slope along trail to Castle Rock. A lava capped mesa in the Denver Formation, on west facing slope along trail. Loraine Yeatts 934. 25 Jun 1984. ( KHD20859 ) Meadow; locally abundant; with Descurainia. S. Table Mt., a lava capped mesa in the Denver Formation; meadow below S. facing mesa slope E of Quaker, N of hill 6020. UTM: 841992. Loraine Yeatts 1398. 11 May 1987. ( COLO00179820 ) . .

Capsella bursa-pastoris (L.) Medik.  Shepherd's Purse. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, scapose, to 27 cm., hairs, sessile, stellate, 3-4 points, throughout; Leaves, basal, oblanceolate, 55 mm. × 16 mm. wide, deeply lobed, but not all the way to mid-rib; cauline, 4-5 stem leaves, lanceolate, 25 mm. × 10 mm. wide, base sagittate; Flowers, small, petals white; Fruit, obcordate, 4 mm. × 3.5 mm. wide. The single species in this genus; described by some as the second-most common weed on Earth (Described from Coll. No. 1336, 11 May 2016).

- Lippincott Property, Disturbed places, in this case an old road, along with other early annuals, such as Collinsia parviflora and Draba nemorosa. Jointly owned by City of Boulder OSMP and Jefferson County Open Space, approximate center of property. 21.8 km. north northwest of the GNIS location of Golden. Tom Schweich 2017. 18 Apr 2019. ( CIBO JCOS s.n. KHD ) .

- Tucker Gulch (lower), Common “weed” beside Tucker Gulch Trail. 230 m. north of the First Street bridge, 1.55 km north northwest of the GNIS location of Golden Tom Schweich 1336. 11 May 2016. ( CS KHD00063529 ) . .

Chorispora tenella (Pall.) DC.  Crossflower. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, hairs 0, sparsely stalked-gland-dotted; Leaves basal, withered at flowering, cauline simple, not basally lobed or clasping; Flowers radial; Corolla purple; Stamens 6; Ovary linear when young; Fruit linear, bilateral, to 4 cm, seed in proximal 2.5 cm., tip pointed; Seeds in two rows, brown, 1 mm (Described from Coll. No. 301, 5 Nov 2012).

- Apex Park - Northern Parcel, Small patch, collected with Prunus virginiana. Southeast corner of Apex Park - North parcel, along an ephemeral stream that drains northeastward through Stonebridge HOA to Deadman Gulch, 4.77 km. south of the GNIS location of Golden. Tom Schweich 2284. 18 May 2020. ( CAS JCOS s.n. KHD OBI ) .

- Golden, Abundant in vacant lots. Near city limits of Golden. J. H. Ehlers 7973. 9 May 1940. ( RM492628 ) Abundant in vacant lots. Golden. J. H. Ehlers 7986. 18 May 1940. ( RM492630 ) Golden, At 1100 10th street, Golden. 13N 0481010E 4400714N. Jim Ratzloff 25. 22 Apr 1976. ( KHD18149 ) In sandy soil on the bank of a creek. Golden, 1200, 10th street, Golden. on bank of Clear Creek. 13N 0481125E 4400802N. Jim Ratzloff 32636. 16 Mar 1976. ( KHD18151 ) .

- Kinney Run, Between Kinney Run Trail and the creek, just north of Tripp Ranch, 3.36 km. south of the GNIS location of Golden. Tom Schweich 1778. 12 Apr 2018. ( EIU KHD00068467 ) .

- Lippincott Property, Coordinates estimated by GoogleEarth. Jointly owned by City of Boulder OSMP and Jefferson County Open Space, south parcel, high prairie above Rocky Flats, 21.5 km. north northwest of the GNIS location of Golden. Tom Schweich, with Irene Weber 2022. 24 Apr 2019. ( CIBO JCOS s.n. KHD ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Possibly at a former home site. Just inside North Table Mountain Park, southeast side of North Table Mountain, about 150 m, northwest of the trailhead for the Neighborhood Access Trail at the corner of Ridge Road and Ulysses Avenue, 2.9 km northeast of the GNIS location of Golden. Tom Schweich 1308. 12 Apr 2016. ( CAS JCOS s.n. KHD00063634 OBI83181 UC UCR277959 ) .

- North Washington Open Space, Margin of social trail, flower only, no fruit, not collected. Tom Schweich 4/24/2020. Beside the primary east-west social trail, in an area mowed by adjacent private landowners in an effort to widen the social trail. Also collected here: Chenopodium album, Cirsium arvense, Lactuca serriola, and Bromus inermis. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 2.24 km. northwest of the GNIS location of Golden. Tom Schweich 2273. 12 May 2020. ( CDA CS KHD REGIS ) .

- South Table Mountain, A lava capped mesa of basaltic origin in the Denver Formation. South Table Mountain along road to Castle Rock. 13N 0483599E 4400313N. Loraine Yeatts 468. 2 May 1983. ( KHD19722 ) .

- Tucker Gulch (lower), Small colony of this common early spring weed. Disturbed area between paths, 1.33 km north northwest of the GNIS location of Golden Tom Schweich 1330. 11 May 2016. ( CDA COLO02348423 CS KHD00063633 ) . .

Descurainia incisa (Engelm.) Britton.  CalPhotos. Jepson eFlora. SEINet Taxon.

- South Table Mountain, A lava capped mesa in the Denver Formation, in slightly depressed grassy area on flat mesatop. South Table Mountain. 13N 0483200E 4400600N. Loraine Yeatts 1395. 7 May 1987. ( COLO00183517 KHD25546 ) . .

Descurainia pinnata (Walter) Britton.  Western Tansymustard. CalPhotos. Jepson eFlora. SEINet Taxon.

- South Table Mountain, A lava capped mesa in the Denver Formation. South facing slope below mesa edge. South Table Mountain West of Quaker Road. 13N 0484100E 4399100N. Loraine Yeatts 878. 22 May 1984. ( COLO00183764 KHD20835 ) . [ Miscellaneous: Original ID as Descurainia pinnata (Walt.) Britt. Annotations: Descurainia incisa subsp. viscosa (Rydb.) Rollins, det. by W.A. Weber, Dec. 1993. ] .

Descurainia sophia (L.) Webb.  Tansy Mustard. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, 30 cm. (to 50 cm. when growing among grasses), not scapose; Tap root; Stem simple at base, branched distally; Hairs many-branched; Leaves basal 0, cauline compound, 2-3 pinnately dissected, sessile, not basally lobed, sagittate, or clasping; Inflorescence not bracted; Pedicel, in fruit diverging 30–45°; Petals yellow, 2.5 mm.; Ovary linear; Stigma ±entire (there are clearly two separate segments of the stigma that are receptive, but there is no central cleft between them); Fruit (7-15 mm.) -25 mm., linear (not fusiform or club-shaped), glabrous, not appressed; Septum veined Seeds, multiseriate (Described from Coll. Nos. 404, 854, and 935).

- Golden, on disturbed ground. At 1100 10th. st., Golden. 13N 0481013E 4400749N. Jim Ratzloff 22 Apr 1976. ( KHD18187 ) 1130 10th street, Golden. 13N 0481105E 4400440N. Jim Ratzloff 27. 22 Apr 1976. ( KHD18186 ) .

- Lippincott Property, Open ponderosa pine woodland with a lot of cheatgrass. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, narrows of the parcel between central and southeast portions, 22 km. north northwest of the GNIS location of Golden. Tom Schweich 2081.2 17 Jun 2019. ( JCOS s.n. ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 . .

Draba Draba. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Small white crucifer, no fruit. Tom Schweich 4/14/2016. . .

Draba nemorosa L.  Woodland Whitlow Grass. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual terrestrial herb, 11 to 25 cm., hairs vary: none, simple, forked, but not dolabriform; Stem, proximal, hairs simple and forked, distal, glabrous; Leaves, basal and cauline, Basal, simple, 12 mm. × 4.5 mm. wide, hairs forked; Cauline, #5-6, sessile, 11 mm. × 4 mm. wide, sparsely dentate, hairs, simple and forked; Inflorescene, raceme; Sepals, rows, #1, 1.3 mm. × 0.7 mm. wide, ovate, color, green turning yellow, abaxial hairs wavy; Petals, 2 mm. × 0.7 mm. wide, spoon-shaped, margin entire, color, yellow; Stamens, #4 or 6, 1.3 mm.; Anthers, 0.3 mm.; Style, very short; Fruit, pedicels, 20 mm., puberulent, body, 7 mm. × 2 mm. wide, ascending, short straight appressed hairs (Described from Coll. No. 1821, 16 May 2018).

- Heritage Square, In disturbed, fairly fertil ground; unshaded; soil well drained. 13N 0481911E 4396272N. Ernest H. Brunquist 86. 17 Apr 1960. ( KHD18224 ) .

- Kinney Run, Among deep grasses, forbs, and a few shrubs. Small alluvial terrance between the streambeds of Kinney Run and Deadman Gulch, 2.8 km. south of the GNIS location of Golden Tom Schweich 1821. 16 May 2018. ( COLO02348142 KHD00068466 UCR ) .

- Lippincott Property, Disturbed places, in this case an old road, along with other early annuals, such as Collinsia parviflora and Capsella bursa-pastoris. Jointly owned by City of Boulder OSMP and Jefferson County Open Space, approximate center of property. 21.8 km. north northwest of the GNIS location of Golden. Tom Schweich 2018. 18 Apr 2019. ( CIBO JCOS s.n. KHD ) .

- South Table Mountain, On Mossy ledges at head of gully, common. On mossy ledges at head of 1st N-facing gully E of Castle Rock; with Collinsia parviflora, Penstemon virens, Eriogonum umbellatum. Not easily seen, but probably common. S Table Mt., 1st N facing gully E of Castle Rock. Loraine Yeatts 1389. 23 Apr 1987. ( COLO00189597 CS81498 ) A lava capped mesa in the Denver Formation; on mossy ledges at head of gully with Collinsia parviflora, Penstemon virens, Eriogoum umbellatum. South Table Mountain, 1st North facing gully East of Castle Rock. 13N 0483020E 4400950N. N side of road 68. SW corner of Sec 18. Loraine Yeatts 1396. 7 May 1987. ( KHD25545 ) . .

Draba reptans (Lam.) Fernald.  Carolina Whitlow Grass. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, from slender taproot, to 10 cm.; Leaves, basal, withered in fruit, entire, cauline, 0-1 pair per stem, 6 mm. × 2 mm. wide, entire, hairs branched; Pedicels, glabrous; Flowers, petals, color unknown; Fruit, distributed in upper ⅕-⅓ of rachis (Described from Coll. No. 1376, 29 May 2016).

- Golden, Golden. Ira W. Clokey, with E. Bethel 4129. 20 May 1921. ( RM492356 ) .

- Ranson/Edwards Homestead Open Space Park, Growing among short grasses and forbs. High plains above Rocky Flats, 15.8 km. north northwest of the GNIS location of Golden, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.4 mi. north on Plainview Road, then 340 m. north of Plainview Road. Tom Schweich 1376. 29 May 2016. ( KHD00063531 ) Along a low ridge that is a little drier and rockier than surrounding grass land; moss growing on bare soil. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 567 m. northeast past the old homestead, about 15.9 km. north of the GNIS location of Golden. Tom Schweich 1838. 17 May 2018. ( JCOS s.n. ) .

- South Table Mountain, a lava capped mesa in the Denver formation; Meadow W of Quaker road on gentle N slope of hill 6020 below perimeter of Cercocarpus montanus cover; with Androsace occidentalis, Carex pensylvanica ssp. heliophila, Chondrosum gracile, Lomatium orientale, Alys Front Range, South Table Mt. 13N 0484091E 4398978N. Loraine Yeatts 4858. 28 Apr 2003. ( KHD38436 ) . .

Erysimum asperum (Nutt.) DC.  CalPhotos. Jepson eFlora. SEINet Taxon.

- Colorado School of Mines Survey Field, United States of America, Colorado, Jefferson County, Plains base of Lookout Mt. Golden. J. H. Ehlers 6824. 31 May 1939. ( GH992174 ) .

- Golden, United States of America, Colorado, Jefferson County, Golden City, &c. Edward L. Greene 1870. ( GH1561667 ) United States, Colorado, Jefferson, Golden Florence Knipe 2461. n.d.. ( IND93215 ) .

- Lookout Mountain, Very abundant, rocky soil derived from granite and schist. On small mesa on the Lariat Trail, Lookout Mountain. Hansford T. Shacklette 6649. 5 May 1962. ( COLO00858621 COLO00858639 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Zeise, Larry Steven, 1976 . .

Erysimum capitatum (Hook.) Greene.  Sanddune Wallflower. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial or at least biennial, 16 cm. 25-45 cm., hairs dolabriform throughout; Root, tap; Stems, erect, leafy, proximal not woody hairs as above; Leaves, basal and cauline, basal, petiole, indistinct, ±10 mm., + blade, 50-100 mm. × 2.5-3 mm. wide, narrowly oblanceolate, margin 1-3 shallowly pinnate dentate, cauline, nearly sessile, 42 mm. × 2.5 mm. wide, ±linear, margin, entire, reduced distally; Inflorescence, raceme 130 mm. × 45 mm. wide, not bracted; Pedicels, 3-6 mm., elongating as flower matures, ascending; Flowers, radial; Sepals, #4, rows, 1, 7 mm. × 1-1.5 mm. wide, narrow and wide pairs opposite, lateral pair basally saccate; Petals, claw, 10-11 mm. + blade 6-9 mm. × 4-6 mm. wide, spoon-shaped, margin, entire, color, yellow, orange; Stamens, #6, 11 & 15 mm., tetradynamous (2 short, 4 long); Anthers, 4.5 mm.; Ovary, 4 mm.; Style, 9 mm.; Stigma, capitate; Fruit, 17-34 mm. × 1 mm. wide, 4-angled, ascending, hairy as above; Seeds, unknown (Described from Coll. Nos. 206, 1835, & 2306).

- Apex Park - Northern Parcel, Under a Rocky Mountain juniper among ponderosa pines; also collected here: Harbouria trachypleura and Physaria montana. Northernmost quadrant of the parcel, north side of Deadman Gulch, in a small saddle near the top of the initial Rocky Mountain Front Range scarp, 4.14 km. south southwest of the GNIS location of Golden Tom Schweich 2306. 26 May 2020. ( JCOS s.n. KHD OBI ) .

- Clear Creek Canyon Park, Grassy slopes. Tom Schweich 4/27/2018. .

- Colorado School of Mines Survey Field, Grassy alluvial terrace under power lines. Southwestern part of Survey Field, lowest slopes of Lookout Mountain (Rocky Mountain Front Range), 2.56 km. south southwest of the GNIS location of Golden. Tom Schweich 1638. 25 May 2017. ( KHD00065336 ) .

- Golden, West of Golden. 13N 0484293E 4399631N. Unknown 24 May 1919. ( KHD18300 ) .

- Lookout Mountain, Upper slopes of Lookout Mt., Golden. J. H. Ehlers 8081. 31 May 1941. ( COLO 00191866 ) Lookout Mountain. 13 0479599E 4397885N. Unknown 18 May 1913. ( KHD16228 ) .

- Mount Galbraith Park, South-facing, steep, rocky slopes above the Nightbird Gulch trail. Tom Schweich 1100. 3 May 2015. ( JCOS s.n. KHD56937 ) .

- Ranson/Edwards Homestead Open Space Park, Open gentle slope with grasses and forbs, lightly grazed in 2016. 1.6 mi. west on CO 72 from CO Hwy 93, 1.6 mi. north on Plainview Road, then 470 m. southwest upslope.15.3 km. north northeast of the GNIS location of Golden. Tom Schweich 1412. 10 Jun 2016. ( JCOS s.n. KHD00063534 ) Along a low ridge that is a little drier and rockier than surrounding grass land; moss growing on bare soil. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 570 m. northeast past the old homestead, about 15.9 km. north of the GNIS location of Golden. Tom Schweich 1835. 17 May 2018. ( CAS COLO02347730 EIU ) .

- South Table Mountain, A lava capped mesa in the Denver Formation. At base of South facing slope next to Rimrock Road. In flat area. South Table Mountain, Next to Rimrock road. 13N 0483041E 4399200N. Loraine Yeatts 888. 28 May 1984. ( KHD20932 ) West facing slope with Prunus virginiana. South Table Mountain, a lava capped mesa in the Denver Formation. On a west facing slope below Castle Rock. 13 0481938E 4400443N. Mary E. Edwards 427. 1 Jun 1983. ( COLO00191916 KHD20929 ) . .

Erysimum cheiranthoides L.  Wormseed Wallflower. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, Several populations found with at least 2 abundantly distributed. #1: in dry, sandy slightly humous soil. #2: Moderate slope, bereft of shrubs other than prickly pear. In dry sandy soil. Associated taxa: Allysum minus, E. colo-mexicanus, A. Nelson, unf South facing slope of North Table Mountain, near base, near trail running west to east continuously for 2-3 miles. 13 0480743E 4401817N. Stanley Smookler 39. 4 Apr 1901. ( KHD29383 ) . .

Hesperis matronalis L.  Dame's Rocket. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 50 cm., hairs, forked on stem, leaf, and sepal, but not fruit; Leaves, basal, withered at flowering, cauline, petiole 3-5 mm. + blade 100 mm. × 35 mm. wide, lanceolate, margin, small-toothed; Inflorescence, raceme; Sepals, #4, 5-6 mm., green, margins purple; Petals, #4, 13 mm. × 4 mm. wide, clawed, purple; Fruit, silique, 40 mm. × 0.6 mm. wide; Seed, 1.7 mm., brown, glabrous (Described from Coll. No. 1441, 15 June 2016).

- Deadman Gulch, The pond was reconstructed by the City of Golden late in 2016. Deadman Gulch is locally euphemistically referred to as “Kinney Run.” Colorado Noxious Weed List B. Adjacent to a small artificial pond in Deadman Gulch, about 150 m. upstream of the gulch undercrossing of US Highway 6, 2.5 km. south of the GNIS location of Golden. Tom Schweich 1441. 15 Jun 2016. ( CS JCOS s.n. KHD00063536 ) . .

Lepidium campestre (L.) W. T. Aiton.  Field Pepperweed. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, herb, in dry and wet habitats, 15 cm. to 35 cm. tall; Roots, tap; Hairs, simple, on stems and leaves; Stem, erect, leafy, branched above or not; Leaves, basal, sometimes absent, petiole 10 mm. + blade 40 mm. × 12 mm. wide, oblanceolate, margin wavy, tip rounded, cauline, 12-21 mm. × 3.5-7 mm. wide, lance-linear to lanceolate, base auriculate, 2 mm., margin dentate (scalloped, though the term is rarely used), anthocyanic; Inflorescence, terminal raceme, 35-72 mm. × 17-21 mm. plus occasional several axillary racemes, not bracted, not one-sided; Sepals, #4, rows, #1, 1.2 mm. × 0.6-0.8 mm. wide, ovate, cream-green, purple distally, margin chartaceous; Petals, 1.3-1.5 mm., spoon-shaped, margin, entire, white; Style, #1, 0.5 mm., persistent; Fruit, pedicel, horizontal to spreading, 5 mm., silicle, 4.0-4.5 mm. × 3 mm. wide, margin, winged apically, 0.2 mm. at middle, 1 mm. at apex. (Described from Coll. No. 1413, 10 Jun 2016, and Coll. No. 1918.1, 3 June 2018.)

- Colorado School of Mines Survey Field, Growing at edges of Juniperus communis. High plains at the lowest slopes of Lookout Mountain, northwest corner of the Survey Field, near Lookout Mountain Road, 1.95 km. southwest of the GNIS location of Golden. Tom Schweich 1607. 13 May 2017. ( CAS CDA COLO02347870 KHD00065401 UCR ) High plains below Lookout Mountain (Rocky Mountain Front Range), about 265 meters northwest of the intersection of Fox Hollow Lane with Eagle Ridge Drive, 2.37 km. south of the GNIS location of Golden. Beside a small creek tributary to Deadman Gulch. Tom Schweich 1633. 25 May 2017. ( EIU KHD00065120 OBI UC ) .

- Hildebrand Ranch Park, Habitat: Hildebrand Ranch open space along north side of Deer Creek, dominated by smooth brome, cheat grass, cottonwood overstory; Colorado, Jefferson, Hildebrand Ranch Jefferson County Open Space. Laura Vary, with Jaquan Horton 622. 23 Jun 2015. ( KHD56417 ) .

- Meyer Ranch Park, Colorado, Jefferson County, Meyer Ranch Park, Jefferson County Open Space, west of the intersection of HWY 285 and Turkey Creek Road. Verbatim Coordinates: 13S 0476090E 4376628N. Carol Winther 55. 23 Jun 2004. ( KHD48611 ) .

- Ranson/Edwards Homestead Open Space Park, Open gentle slope with grasses and forbs, lightly grazed in 2016. 1.6 mi. west on CO 72 from CO Hwy 93, 1.6 mi. north on Plainview Road, then 470 m. southwest upslope.15.3 km. north northeast of the GNIS location of Golden. Tom Schweich 1413. 10 Jun 2016. ( CS JCOS s.n. KHD00063537 ) Annual, in sheet flow water from a small stream that has been diverted. 1.7 mi. west on CO Highway 72 Coal Creek Canyon Roaf from CO Highway 93, 1 mi. generally north on Plainview Road, then 410 m. a little north of east to a terrace overlooking Coal Creek. Tom Schweich 1918.1 3 Jun 2018. ( CAS OBI ) . .

Lepidium draba L.  (Syn: Cardaria draba (L.) Desv. ) White Top. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, herb, to 45 cm., spreading by rhizomes, hairs simple; Leaves, basal, not seen, cauline, sessile, base auriculate, 36 mm. × 12 mm. wide, oblanceolate, margin irregularly toothed, reduced above; Flowers, petals, white; Style, immature, 1 mm.; Fruit, silicle, immature, 1.3-1.5 mm. × 0.5-1.0 mm. wide, flattened, wings 0, glabrous, reticulate-veined (Described from Coll. No. 1366, 24 May 2016).

- Golden, Fallow fields and roadsides. East of Golden. J. H. Ehlers 8077. 29 May 1941. ( COLO00181750 ) .

- North Table Mountain Park, Multiple colonies spread around gentle grassy slopes. Weed: CO DofA, List: B. Lower west-facing slopes of North Table Mountain, off the North Table Loop, 500 m. north of the trailhead off CO Highway 93, 3.5 km. north of the GNIS location of Golden. Tom Schweich 1366. 24 May 2016. ( CS JCOS s.n. KHD00063532 UC UCR277975 ) .

- Tin Cup Ridge, At the edge of the parking lot. Colorado Noxious Weed List B Lowest slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.5 km. south southeast of the GNIS location of Golden. Tom Schweich 1874. 23 May 2018. ( CAS CDA JCOS s.n. KHD00068465 ) . .

Lepidium latifolium L.  (Syn: Cardaria latifolia (L.) Spach ) Broad-Leaved Pepper-Grass. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Abundant in open fields. Just W of Hwy 6 S of junction with Golden Road. W. A. Weber, with Dan Randolph 17349. 20 Jul 1984. ( COLO00181917 TENN104731 ) . .

Lepidium perfoliatum L.  Clasping Pepperweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain Park, In the median and beside the Mesa Spur Trail, near the crossing of Ramstetter Creek, 130 m. south of W. 58th Avenue, surrounded on both sides by horse corrals and facilities, 5.07 km. north of the GNIS location of Golden. Tom Schweich 1808. 11 May 2018. ( CDA CS JCOS s.n. KHD00068463 ) . .

Lunaria annua L.  Money Plant. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Middle yard of 411 Arapahoe Street, Golden, persisting in what may have been a formal garden of this 1903 house. Tom Schweich 2277. 16 May 2020. ( KHD ) . .

Nasturtium officinale R. Br.  (Syn: Rorippa nasturtium-aquaticum (L.) Hayek ) Watercress. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb to 15 cm., aquatic, hairs 0; Caudex 0; Roots, fibrous, rooting at nodes; Stem decumbent, leafy; Leaves cauline, compound, pinnately divided, petioled, Inflorescence not bracted, not one-sided; Flowers radial; Sepals 2-2.3mm., ovate to obovate; Petals 2.5-4.0 mm., white, obovate to spoon-shaped, margins entire; Stamens 6; Filaments plain; Fruit, young linear, mature 13 mm. x 1.8 mm. wide; Ovules (seeds) many, 2 rows. Treated as native to California by TJM2 and Colorado by Ackerfield (2015), but alien by Weber & Wittmann (2012) and introduced by USDA Plants. (Described from Coll. No. 889, 23 August 2012, and 2133, 7 Jul 2019).

- Apex Gulch, Flowing water below a well or casing-enhanced spring. This area was extensively collected by E. H. Brunquist in 1959-1960 during the Peabody Museum excavation at Magic Mountain. N. officinale was not collected at that time. Terrace on the north bank of Apex Gulch, between Fire Station 4 and the Kinney Run Trail bridge, 5.73 km. south of the GNIS location of Golden. Tom Schweich 2133. 8 Jul 2019. ( JCOS s.n. KHD OBI UCR ) .

- South Table Mountain, Locally abundant in flowing water at edge of cliff below seeping drainage. South Table Mt. 13N 0484293E 4399631N. Loraine Yeatts 638. 3 Jul 1983. ( COLO00198432 KHD19693 ) . .

Noccaea fendleri (A. Gray) Holub.  CalPhotos. Jepson eFlora. SEINet Taxon.

- Windy Saddle Park, Tom Schweich 5/4/2020. . .

Noccaea fendleri (A. Gray) Holub ssp. glauca (A. Nelson) Al-Shehbaz & M. Koch.  (Syn: Noccaea montana (L.) F. K. Meyer , Thlaspi montanum L. var. montanum ) CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herbs, with basal leaves and flowering stems to 8 cm., glabrous, prior year flowering stems persistent; Leaves, basal, 8 mm. × 4 mm. wide, ±obovate, margin entire, abaxially purple, petiole 5 mm., cauline, 8 mm. × 5 mm. wide, base auriculate, margin entire; Flowers, white, fading purple; Petals 4.5 mm.; Fruit, a silicle, 5.5-7.0 mm. × 2.5-3.0 mm. wide, obcordate, winged distally (Described from Coll. No. 1085, 25 April 2015, and Coll. No. 1328, 5 May 2016).

- Lippincott Property, Northwest facing forested slope. Collected with Besseya plantaginea and Viola canadensis. Jointly owned by City of Boulder OSMP and Jefferson County Open Space, south of Bull Gulch approximate centroid of parcel, 22.6 km. north northwest of the GNIS location of Golden. Tom Schweich 2037.1 26 May 2019. ( CIBO JCOS s.n. ) .

- Lookout Mountain, Dry slope on mountain. Golden: Lookout Mountain. Earl L. Johnston, with G. G. Hedgecock 960. 7 Jun 1917. ( RM482818 ) Above Golden. Mrs. Ella Bailar 1905. ( COLO00199703 ) .

- Ranson/Edwards Homestead Open Space Park, Few plants in the shade of ponderosa pine. Stevens parcel immediately south of Ranson/Edwards parcel, 1.5 km south of the GNIS location of Plainvew, 3.71 km west southwest of the GNIS location of Rocky Flats. Tom Schweich 1328. 5 May 2016. ( UC ) Common in shade of ponderosa pines among rocks; flat, disturbed area above Coal Creek, with much broken glass. Stevens parcel immediately south of Ranson/Edwards parcel, 1.64 km south southeast of the GNIS location of Plainview, 3.48 km west southwest of the GNIS location of Rocky Flats. Tom Schweich 1329. 5 May 2016. ( CAS OBI83177 UCR277966 ) Openings in grassy, recently burned, ponderosa pine woodland, about 520 meters northeast of Plainview, 2.1 miles north on Plainview Road from Colorado State Highway 72, then 165 m west. Tom Schweich, with Matt Schweich 1085. 25 Apr 2015. ( JCOS s.n. KHD56957 ) . .

Physaria montana (A. Gray) Greene.  (Syn: Lesquerella montana (A. Gray) S. Watson ) Mountain Bladderpod. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, rosette to 5 cm. dia., flowering stems to 14 cm., not in alpine environment, eastern slope, hairs stellate throughout; Leaves, basal, rosette, 9 mm. × 6.5 mm., ovate, entire, petiole, 12 mm., cauline, 10 mm., appearing secund, narrowly oblanceolate; Inflorescence, exceeding leaves; Pedicels, in fruit, ascending; Fruit, 5 mm. × 2 mm., ovate-elliptic, hairs stellate, apex entire (not notched, although these immature). (Described from Coll. No. 1081, 23 Apr 2015).

- Apex Park - Northern Parcel, Among ponderosa pine and Rocky Mountain juniper; also collected here: Harbouria trachypleura and Erysimum capitatum. Northernmost quadrant of the parcel, north side of Deadman Gulch, in a small saddle near the top of the initial Rocky Mountain Front Range scarp, 4.14 km. south southwest of the GNIS location of Golden Tom Schweich 2305. 26 May 2020. ( JCOS s.n. KHD OBI UCR ) .

- Colorado School of Mines Survey Field, On a nearly bare, rocky alluvial ridge, about 500 meters south of City of Golden Beverly Heights Park, 2.2 km south southwest of the GNIS location of Golden. Tom Schweich, with Jessica Smith 1081. 23 Apr 2015. ( CAS OBI82124 UC UCR266073 ) .

- Golden, Dry hillsides. Golden. R. Duthie, with I. W. Clokey 3778. 18 May 1920. ( RM497030 ) Dry hill sides. Golden. R. Duthie, with I. W. Clokey 3778. 18 May 1920. ( UTC22729 ) .

- Lookout Mountain, On dry talus slope, granite and schist. Small mesa on the Lariat Trail, Lookout Mountain. Hansford T. Shacklette 6678. 19 May 1962. ( COLO 00858449 ) Upper slopes of Lookout Mountain, Golden. J. H. Ehlers 8082. 31 May 1941. ( COLO00197269 ) .

- North Table Mountain, as Lesquerella m. Kilburn, Paul D., and Sally L. White, 1992 as Lesquerella m. Zeise, Larry Steven, 1976 .

- North Washington Open Space, Top of hill, among most intact area of native vegetation. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1642. 30 May 2017. ( CDA KHD00065337 ) .

- Ranson/Edwards Homestead Open Space Park, Among short grasses and forbs on a drier, gravelly alluvial ridge. High plains above Rocky Flats, 15.8 km. north northwest of the GNIS location of Golden, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.4 mi. north on Plainview Road, then 340 m. north of Plainview Road. Tom Schweich 1377. 29 May 2016. ( EIU JCOS s.n. KHD00063530 ) .

- South Table Mountain, On E. facing roadcut; common, widespread. S. Table Mt. W. side of Quaker Rd. UTM: 840993. Loraine Yeatts 504. 24 May 1983. ( COLO00197772 KANU313749 ) S. table Mt. 7.5 Morrison Quad Common on hillside near mesatop. 13N 0482750E 4400694N. Loraine Yeatts 539. 1 Jun 1983. ( KHD19689 ) .

- Tin Cup Ridge, fruit immature, stem leaves secund Tom Schweich 4/30/2020. . .

Physaria vitulifera Rydb.  Roundtip Twinpod. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial, terrestrial herb, caespitose, stellate hairy throughout, flowering branches to 15 cm.; Roots, tap; Stem, scapose, hairs as above; Leaves, basal and cauline, basal, petiole 10-35 mm. + blade 22-24 mm. × 8-14 mm. wide, elliptic, weakly pinnately lobed, to few basal leaves with a single pair of teeth, otherwise entire, tip barely acuminate, cauline, alternate, nearly sessile, 13-22 mm. × 4-4.5 mm. wide, oblancelate, margin entire; Pedicel, 5 mm., ascending, becoming s-shaped in fruit; Sepals, #4, 5-7 mm. × 1.5 mm. wide, lanceolate, green, hairy as above; Flowers, Petals, #4, 10 mm. × 2-2.5 mm. wide, obovate, margin entire, color yellow; Stamens, #6 (4 long, 2 short), 6-8 mm.; Filaments, 4.5-6 mm., pair of short filaments slightly winged proximal ½; Anthers, 1.5 mm., saggitate (?); Ovary, 2 mm. × 1.8 mm. wide; Style, #1, 4-6.4 mm., persistent, not elongating in fruit; Fruit, pedicels, 18-20 mm, longest sigmoid, hairs as above, mature fruit, didymous, 3-4.5 mm. × 4 mm. wide, round, apical sinus well-developed, basal sinus much less so, hairy as above; Ovules, 4 per ovary (Described from Coll. No. 1345, 12 May 2016 and Coll. No. 1828, 16 May 2018). Some will key to P. bellii in Ackerfield (2015) at couplet 17 per the shape of the basal leaves, which can be entire to very shallowly once dentate. However, FNANM sends this in the direction of P. vitulifera at couplet 12 based on the relative development of the basal and apical sinuses of the fruit.

- Clear Creek Canyon, Rocky soil. Transferred from USGS Herbarium, Denver, CO (2005). On US 6, Clear Creek canyon by Tunnel No. 1. Hansford T. Shacklette 5906. 27 Jun 1959. ( COLO528441 ) .

- Clear Creek Canyon Park, Growing on the bank of a former quarry road, southeast-facing side of the canyon, just inside the mouth of Clear Creek Canyon, foothills of Rocky Mountain Front Range, 2.16 km west of the GNIS location of Golden. Tom Schweich 1796. 27 Apr 2018. ( COLO02348225 EIU JCOS s.n. ) .

- Golden, Hills about Golden. C Crandall 20 Apr 1892. ( CS9266 CS9270 ) Golden. George E. Osterhout 6028. 24 Jun 1920. ( RM489362 ) dry hillsides. R Duthie & I Clokey 3777. 18 May 1920. ( CM450088 CS9269 NY3188207 RM497029 RSA0010622 ) Foothills North of Golden. 13N 0480904E 4401814N. Unknown 24 May 1919. ( KHD8820 ) Golden. Will C. Ferril 18 May 1901. ( COLO00203091 ) .

- Kinney Run, Approximate northern extent of Physaria. Tom Schweich 4/27/2020. Approximate south end of outcrop and Physaria. Tom Schweich 4/27/2020. Basal leaves just barely sculpted, petiole 5mm. wide. Tom Schweich 4/27/2020. Tom Schweich 5/15/2020. Tom Schweich 5/15/2020. In and around the rock outcrop of the hogback. Tom Schweich 4/12/2018. Growing in fractures of sandstone outcrops. Outcrops of sandstone about 2/3 of the way up the west limb of the hogback, east side of Kinney Run, 3.07 km. south of the GNIS location of Golden. Tom Schweich 1828. 16 May 2018. ( CAS CDA COLO02347714 EIU KHD00068464 UCR ) Combined with Coll. No. 1828. Tom Schweich 1828.1 16 May 2018. ( Golden ) Combined with Coll. No. 1828. Tom Schweich 1828.2 16 May 2018. ( Golden ) Common on outcrops of Lykens sandstone. Colorado rare plant: G3/S3: Vulnerable, found locally in a restricted range. Collection made to rule out P. vitulifera × bellii. Near the top of steep sandstone outcrops, east side of Kinney Run, just north of Tripp Ranch, 4.4 km. south of the GNIS location of Golden. Tom Schweich 2276. 15 May 2020. ( Golden ) .

- Lookout Mountain, On dry talus slope, granite and schist. Small mesa on the Lariat Trail, Lookout Mountain. Hansford T. Shacklette 6679. 19 May 1962. ( COLO00858233 COLO00858241 ) Above Golden. Mrs. Ella Bailar 1905. ( COLO 00202879 ) USA, Colorado, Jefferson County, Lookout Mountain Unknown 1 Jun 1913. ( KHD8126 ) .

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 Dry, rocky slope. North Table Mountain, Golden. J. H. Ehlers 8363. 5 Jun 1942. ( COLO00201921 ) .

- North Table Mountain Park, North Table Mt., Golden. J. H. Ehlers 8360. 11 May 1942. ( COLO00203109 ) Growing on the east rim of the mesa in exposed soil. North Table Mountain. Growing on the east rim of the mesa. TRS: T3S R70W SEC 14. Mark Duff 154. 16 Jun 1992. ( COLO00203075 ) Growing in volcanic rock outcrop on toe of landslide. Flat area below the rim of North Table Mountain, and above W. 43rd Drive and Ulysses Way, 3.2 km northeast of the GNIS location of Golden. Tom Schweich 1130. 9 Jun 2015. ( JCOS s.n. KHD56963 UCR266082 ) Open grassland on south-facing slope. Southeast base of North Table Mountain, along the neighborhood access trail, 195 m. northwest of the trailhead at the corner of Ridge Road and Ulysses Way, 2.9 km. northeast of the GNIS location of Golden Tom Schweich 1345. 12 May 2016. ( CAS CS JCOS s.n. KHD00063528 OBI83176 UC ) .

- South Table Mountain, Common on 1980 burn site, below mesa edge. South table Mountain. South facing slope just West of Quaker Road. 13N 0484293E 4399631N. Loraine Yeatts 462. 2 May 1983. ( COLO00203042 KHD19690 ) Associated Species: Opuntia polycantha, Jim Hill mustard, Tragapogon ssp, Artemesia frigida, A. ludoviciana, Oxybaphus linearis. Coll. No. 01WYBLM11DW United States, Colorado, Jefferson, West slope of South Table Mountain and North Table Mountain, prominent mesas located just east of the city of Golden and South of Clear Creek which flows through Golden in an easterly direction. Stanley Smookler and Denise Wilson 1 Jul 2011. ( CHIC16970 ) . .

Physaria X1.  Twinpod Hybrid. CalPhotos. Jepson eFlora. SEINet Taxon.

- South Valley Park, Tom Schweich 5/20/2020. Tom Schweich 5/20/2020. Tom Schweich 5/20/2020. Tom Schweich 5/20/2020. with Lappula occidentalis growing through the rosette. Tom Schweich 5/20/2020. Tom Schweich 5/20/2020. Just beside the Lyons Back Trail, a few small rosettes upslope. Tom Schweich 5/20/2020. Tom Schweich 5/20/2020. Tom Schweich 5/20/2020. with Cercocarpus montanus, Juniperus scoparium, and Quercus gambelii. Tom Schweich 5/20/2020. Tom Schweich 5/20/2020. Tom Schweich 5/20/2020. Tom Schweich 5/20/2020. Stiff sandstone-derived soil below cliffs, nearly bare of vegetation. Nearby: Quercus gambelii, Cryptantha virgata, Lappula occidentalis, Mertensia lanceolata, Collinsia parviflora, and Toxicoscordion paniculatum. Between the Coyote Song Trail and the sandstone cliffs on the east side of the park, 4.66 km. west northwest of Chatfield Farms, Denver Botanic Garden. Tom Schweich 2292.1 20 May 2020. ( KHD ) . .

Rorippa palustris (L.) Besser.  (Syn: R. islandica (Oeder ex Murray) Borbas ) Bog Yellow-Cress. CalPhotos. Jepson eFlora. SEINet Taxon.

- Heritage Square, moist gnd ca 2 1/2 mi S of Golden. T R70W S10. Ernest H. Brunquist 36. 22 Aug 1959. ( CS23925 ) .

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 1.7 mi. west on CO Highway 72 Coal Creek Canyon Road from CO Highway 93, 1.1 mi. generally north on Plainview Road, then 305 m. east southeast, 14.90 km. north northwest of the GNIS location of Golden. Tom Schweich 1938. 14 Jun 2018. ( JCOS s.n. KHD00068461 OBI170743 ) . .

Rorippa sinuata (Nutt.) Hitchc.  Spreading Yellowcress. CalPhotos. Jepson eFlora. SEINet Taxon.

- South Table Mountain, Ephemeral pond on flats above south rim of, W of Quaker Rd. in damp mud of last area of pond bed to dry, Xanthium strumarium, Thlapsi arvense, Polygonum erectum ssp. achoreum, Eleocharis acicularis Denver Formation. 1 plant forming large clump; common in grasslands above, South Table Mountain., a lava capped mesa in the Denver formation. 13N 0484293E 4399631N. Loraine Yeatts 4206. 17 Oct 1998. ( COLO00569327 KHD35614 ) . .

Rorippa tenerrima Greene.  Modoc Yellowcress. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, to 15 cm., generally glabrous throughout; Leaves, basal unknown, cauline, largest, petiole 26 mm + blade 60 mm. × 24 mm. wide, oblanceolate in shape, deeply pinnately lobed, reduced above; Inflorescence, raceme, ebractwate; Sepal, 0.7 mm.; Petals, 0.8 mm., color unknown, drying purple; Stamens, #6; Fruit, 7 mm. × 1.3 mm. wide, terete, ascending, not constricted, papillate; Ovules, #21 (Described from Coll. No. 1451, 22 Jun 2016).

- North Table Mountain Park, Ephemeral pond indicated on Golden 7.5' quadrangle may have been natural, but has also been enhanced with a low dam on the southwest side. 2.4 km. north northeast of the GNIS location of Golden. Tom Schweich, with Greg McKittrick 1451. 22 Jun 2016. ( JCOS s.n. KHD00063538 ) . .

Sisymbrium altissimum L.  Tall Tumblemustard. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual terrestrial herb, to 50 mm.; Roots, tap; Stem, erect, branched above, leafy, few simple hairs; Leaves, basal and cauline, basal: compound, (petiole short if at all present), 120 mm. × 28 mm. wide, oblong, pinnately divided, few simple hairs on petioles, mid-ribs, and margins; cauline: nearly sessile, lanceolate, very finely pinnately divided; Flowers, radial; Sepals, #4, rows, 1, 3.5-4.5 mm. × 0.8 mm. wide, small hood-shaped appendage at tip; Petals, 7 mm. × 1.5 mm. wide, margin, entire, color, yellow; Stamens, tetradynamous, 3.6, 5.2 mm.; Filaments, plain; Anthers, 2 mm.; Stigma, (weakly) 2-lobed; Fruit, 17 mm. × 0.5 mm. wide, ascending, glabrous. Described from Coll. No. 1845, 18 May 2018.

- Apex Park - Northern Parcel, Open southeast-facing slopes. Also collected here: Tradescantia occidentalis and Turritis glabra. Northernmost quadrant of the parcel, steep slope part way up the initial Front Range scarp, 4.08 km. south of the GNIS location of Golden Tom Schweich 2297. 26 May 2020. ( CDA JCOS s.n. OBI ) .

- Heritage Square, Growing unshaded in medium tall grass. 13N 0481886E 4396586N. Ernest H. Brunquist 19. 28 Jul 1960. ( KHD18466 ) .

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- North Washington Open Space, In the formerly mowed area, along the northeast side. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.73 km. north northeast of the GNIS location of Golden. Tom Schweich 1845. 18 May 2018. ( COLO02347698 KHD00068460 UCR ) .

- South Table Mountain, In road bed. South Table Mountain, a lava capped mesa ofbasaltic origin in Denver Formation. Along mesatop road, to Castle Rock. 13N 0482486E 4400082N. Loraine Yeatts 649. 3 Jul 1983. ( COLO00204966 KHD19692 ) . .

Sisymbrium loeselii L.  Loesel's Tumble Mustard. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, Zeise, Larry Steven, 1976 . .

Thlaspi arvense L.  Field Penny Cress. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, tap-rooted, to 50 cm., generally glabrous throughout; Stem, single, or few-branched proximally; Leaves, basal and cauline, basal, withered at flowering, cauline, sessile, auriculate, oblong, 30 mm. × 5-9 mm. wide, reduced distally, dentate; Inflorescence, raceme; Sepals, 2 mm. × 1 mm. wide, ovate; Petals, 3-3.5 mm. × 1 mm. wide, spoon-shaped, margin entire, white; Stamens, 2 mm.; Anthers, 0.5 mm.; Fruit, pedicels 10-15 mm., ascending to spreading, glabrous, fruit obovate, 10 mm. × 8 mm., wide, margin winged, tip notched 1 mm.; Ovules, biseriate, #many (Described from Coll. No. 1324, 4 May 2016).

- Colorado School of Mines Survey Field, High plains below Lookout Mountain (Rocky Mountain Front Range), about 265 meters northwest of the intersection of Fox Hollow Lane with Eagle Ridge Drive, 2.37 km. south of the GNIS location of Golden. Beside a small creek tributary to Deadman Gulch. Tom Schweich 1634.1 25 May 2017. ( KHD00065335 ) .

- Kinney Run, Among deep grasses, forbs, and a few shrubs. Small alluvial terrance between the streambeds of Kinney Run and Deadman Gulch, 2.8 km. south of the GNIS location of Golden Tom Schweich 1820. 16 May 2018. ( CDA COLO02348134 EIU JCOS s.n. ) .

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Along a social trail above Peery Parkway, adjacent to running water from spring above on upper slopes of North Table Mountain, 1.26 km north northeast of the GNIS location of Golden. Tom Schweich 1324. 4 May 2016. ( CAS JCOS s.n. KHD00063632 OBI83178 UC UCR277963 ) Gentle grassy slope. Lower west-facing slopes of North Table Mountain, off the North Table Loop, 500 m. north of the trailhead off CO Highway 93, 3.5 km. north of the GNIS location of Golden. Tom Schweich 1365. 24 May 2016. ( COLO02348498 CS JCOS s.n. KHD00063533 ) .

- North Washington Open Space, Along the north fence. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.73 km. north northeast of the GNIS location of Golden. Tom Schweich 1846. 18 May 2018. ( CAS KHD00068459 UCR ) .

- South Table Mountain, In damp South facing gully under Willow tree. South Table Mountain. 13N 0482039E 4400470N. Loraine Yeatts 481. 16 May 1983. ( COLO00208231 KHD19691 ) . .

Turritis glabra L.  (Syn: Arabis glabra (L.) Bernhardi ) Tower Rockcress. CalPhotos. Jepson eFlora. SEINet Taxon.

Short-lived (?) perennial, terrestrial, herb, 45 cm. to 90 cm. tall; Roots, tap. Stem, erect, #1, (1 of 4 specimens has 2 stems), leafy, proximal, simple and forked hairs, distal, glabrous; Leaves, basal and cauline, basal simple, petiole, 6 mm., blade, 60 mm. × 15 mm. wide, oblanceolate, hairs, simple and forked, margin, dentate, tip, obtuse; cauline, #20, sessile, lobed, 2.5 mm., 40 mm. × 10 mm. wide, lanceolate, reduced above, margin, entire, becoming glabrous distally; Inflorescence, raceme, 70 mm. × 11 mm. wide, not bracted, not one-sided; Pedicels (at anthesis), 3-4 mm., glabrous; Sepals, #4, 2.5 mm. × 1.1 mm. wide, ovate, green, margin chartaceous; Petals, 4.5 mm. × 0.7 mm. wide, spatulate, margin entire, color, pinkish, fading lavender; Fruit, (24-) 80-85 mm. × 0.9 mm. wide, ascending-appressed, glabrous, flattened, parallel to replum, style, base 0.4-0.5 mm. wide, stigma, 0.8-0.9 mm. wide; Ovules, biseriate, many, 0.7 mm. × 0.3 mm. wide, tan, translucent, wing not apparent. (Described from Coll. No. 1887, 28 May 2018).

- Apex Park - Northern Parcel, Open southeast-facing slopes. Also collected here: Tradescantia occidentalis. Northernmost quadrant of the parcel, steep slope part way up the initial Front Range scarp, 4.08 km. south of the GNIS location of Golden Tom Schweich 2296.1 26 May 2020. ( JCOS s.n. ) .

- Colorado School of Mines Survey Field, Late, some have finished blooming, flowers pinkish rather than white. Southeast-facing slope, along an unnamed stream in the south end of the Survey Field, 2.44 km. south of the GNIS location of Golden. Tom Schweich 1887. 28 May 2018. ( COLO COLO02347680 KHD00068458 ) .

- North Table Mountain, White, Sally, and Loraine Yeatts, 1994 .

Cactaceae

Coryphantha missouriensis (Sweet) Britton & Rose.  (Syn: Escobaria missouriensis (Sweet) D.R.Hunt ) Missouri Foxtail Cactus. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, [Redacted] Loraine Yeatts n.d.. ( KHD19259 KHD20411 ) .

- Lippincott Property, At base of boulder near Bull Gulch. Tom Schweich 4/18/2019. .

- Magic Mountain, three plants, one with four stems. Tom Schweich 4/18/2018. .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Between 3 rocks on toe of landslide, lowest southwest slope. Tom Schweich 3/14/2018. .

- North Washington Open Space, One stem, another with 2 stems 1 m. sw, another with a double stem 1 m. e. Tom Schweich 4/28/2018. Complex of stems. Tom Schweich 4/28/2018. Two stems. Tom Schweich 4/28/2018. One stem, another with a double stem 1 m. s. Tom Schweich 4/28/2018. Tom Schweich 3/27/2017. Tom Schweich 5/12/2020. Tom Schweich 5/12/2020. .

- Tin Cup Ridge, 2 plants seen here Tom Schweich 5/23/2018. . .

Coryphantha vivipara (Nutt.) Britton & Rose.  (Syn: Escobaria vivipara (Nutt.) Buxb. , Escobaria vivipara (Nutt.) Buxb. var. deserti (Engelm.) D. R. Hunt , Escobaria vivipara (Nutt.) Buxb. var. rosea (Clokey) D. R. Hunt , Mamillaria vivipara (Nutt.) Haw. ) Beehive Cactus. CalPhotos. Jepson eFlora. SEINet Taxon.

- Colorado School of Mines Survey Field, Only one seen, among much prickly pear. Tom Schweich 1070. 12 Mar 2015. ( Not collected, cactus. ) .

- Golden, [Redacted] Loraine Yeatts n.d.. ( KHD19225 KHD19226 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Colony of seven, by side of trail, growing precarious in thin soil on top of a boulder. Tom Schweich 5/8/2017. .

- North Washington Open Space, in mowed area Tom Schweich 5/2/2017. Determination tentative. Tom Schweich 8/30/2019. . .

Echinocereus viridiflorus Engelm.  (Syn: Echinocereus chloranthus (Engelm.) J.N.Haage , Echinocereus viridiflorus Engelm. var. chloranthus (Engelm.) Backeb. ) Nylon Hedgehog Cactus. CalPhotos. Jepson eFlora. SEINet Taxon.

- Mount Galbraith Park, In a saddle near the top of the Nightbird Gulch trail. Tom Schweich 1096. 3 May 2015. ( Not collected, cactus. ) .

- Mount Zion, Tom Schweich 4/3/2017. .

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Open overgrazed meadow. 1.4 mi. NW of north Table Mesa. East of Colo. 93. G. K. Arp 870. 29 May 1970. ( COLO 00209775 ) .

- North Washington Open Space, Tom Schweich 3/27/2017. .

- Ranson/Edwards Homestead Open Space Park, Several cacti in bloom on this date. Tom Schweich 5/29/2016. Tom Schweich 7/29/2015. .

- South Table Mountain, Among lava boulders, locally common. South Table Mountain, a lava capped mesa in the Denver Formation. South facing slope near local mesa high point among lava boulders. 13N 0483465E 4400102N. Loraine Yeatts 894. 30 May 1984. ( COLO00209528 KHD20412 ) . .

Opuntia (L.) Mill.  Prickly Pear. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, as O. compressa Zeise, Larry Steven, 1976 as O. compressa, which is currently treated as a synonym of O. ficus-indica (Raf.) Raf. and does not occur in Colorado. Kilburn, Paul D., and Sally L. White, 1992 . .

Opuntia macrorhiza Engelm.  Twistspine Pricklypear. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial cactus, not distinctly mat-forming; Stem, segments, 90 mm. × 60 mm. wide, flattened, bluish-green, areoles, #5-6 per diagonal row, spaced 8-14 mm., proximal, glochids only, distal, glochids and spines, spines, #2, #1, 28 mm., erect, brown to tan at tip, #1, 12 mm., recumbent, nearly white; Flowers, petals, 36 mm. × 22 mm. wide, wedge-shaped, color yellow; Stamens, many, 18 mm., yellow; Style, 20-24 mm., stout; Stigma, lobes, #6-8, 3 mm.; Fruit, 38 mm. × 17 mm. wide, narrow at base, fleshy, green, areoles, mix of glochids and short spines. (Described from Coll. No. 1948, 15 June 2018.)

- Colorado School of Mines Survey Field, Northeast-facing gentle slope in foothills grassland, also collected or seen nearby: Cirsium undulatum, Hymenopappus filifolius, Aegilops cylindrica, and Poa bulbosa. Coordinates estimated from those of a nearby collection. Southern part of the Survey Field, high plains at the base of the Rocky Mountain Front Range, 3.14 km. south of the GNIS location of Golden. Tom Schweich 2371. 20 Jun 2020. ( OBI UCR ) .

- Lippincott Property, Gentle rocky southwest-facing slope at edge of ponderosa pine woodland. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, southwest base of hogback in center of parcel, 22.4 km. north northwest of the GNIS location of Golden. Tom Schweich 2156. 13 Jul 2019. ( CIBO JCOS s.n. ) .

- North Table Mountain Park, Near top of small mound, also collected here: Thelesperma megapotamicum and Rhus trilobata. Near the north boundary of the park, lower north slopes of North Table Mountain, in what appears to be the hummocky terrain of an ancient landslide, 6.06 km. north northeast of the GNIS location of Golden. Tom Schweich 2141. 11 Jul 2019. ( KHD ) .

- North Washington Open Space, Tom Schweich 5/2/2017. West-central portion of parcel, likely in the revegetated area, but unlikely to be a revegetated species. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1948. 15 Jun 2018. ( KHD00069598 ) .

- Ranson/Edwards Homestead Open Space Park, South-facing slope above intermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 295 m. west of Plainview Road. Tom Schweich 1259. 26 Jul 2015. ( KHD00062044 ) .

- South Table Mountain, South facing slope near mesa highpoint; with Opuntia polyacantha. South Table Mountain; a lava capped mesa in the Denver Formation. 13N 0481997E 4400399N. Loraine Yeatts 686. 11 Jul 1983. ( COLO00210666 KHD19266 ) . [ KHD19266 is determined O. macrorhiza, whereas COLO401000 is determined O. pheacantha. ] .

Opuntia polyacantha Haw.  Plains Pricklypear. CalPhotos. Jepson eFlora. SEINet Taxon.

- Deadman Gulch, East-facing grassy slope. Deadman Gulch is often referred to by the locally euphemistic name of “Kinney Run.” High plains between US Hwy 6 and Lookout Mountain, about 220 m. northwest of the Deadman Gulch undercrossing of US Hwy 6, 2.3 km. south of the GNIS location of Golden. Tom Schweich 1428. 15 Jun 2016. ( KHD00064000 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Zeise, Larry Steven, 1976 Field Notes No. 1132. Tom Schweich 6/9/2015. .

- North Washington Open Space, Determination tentative Tom Schweich 3/27/2017. Tom Schweich 6/16/2017. .

- South Table Mountain, No collections, but described as more common as O. macrorhiza in a collection of that taxon. Loraine Yeatts 7/11/1983. . .

Pediocactus simpsonii (Engelm.) Britton & Rose.  (Syn: Echinocactus simpsonii Engelm. , Pediocactus simpsonii (Engelm.) Britton & Rose var. minor (Engelm.) Cockerell ) Mountain Ball Cactus. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lippincott Property, in rocks with Mertensia lanceolata, Berberis repens, and Viola nuttallii. Tom Schweich 5/26/2019. .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Field Notes No. 1136. Tom Schweich 6/9/2915. .

- North Table Mountain Park, Tom Schweich 2/27/2016. Seven at this location, nearby 18 in a 4 m. diameter. Tom Schweich 4/16/2018. 18 plants in a small radius. Tom Schweich 4/16/2018. Well-vegetated slope with Cercocarpus montanus Tom Schweich 6/5/2017. .

- Ranson/Edwards Homestead Open Space Park, Tom Schweich 5/5/2016. Tom Schweich 4/14/2016. Single plant, no others seen here. Tom Schweich 6/23/2020. Large. Tom Schweich 9/3/2016. In somewhat rocky alluvial montain mahogany and ponderosa pine woodland, gentle slope, 400 meters northwest of Plainview. Tom Schweich, with Matt Schweich 1086. 25 Apr 2015. ( Cactus, not collected. ) .

- South Table Mountain, On lava gravel at edge of canyon on W. facing side (just W. of powerline and S. of road);uncommon, only few plants; only place seen. On lava gravel at edge of canyon on W. facing side (just W. of powerline and S. of road); So. Table Mtn. 13N 0483231E 4400452N. Loraine Yeatts 471. 2 May 1983. ( KHD19244 ) .

Campanulaceae

Campanula glomerata L.  Dane's Blood. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, 40-50 cm., spreading by underground stems; Leaves, basal, withered at anthesis, cauline, alternate, sessile, lanceolate-oblong, 110 mm. × 41 mm. wide, reduced above, setose, crenate; Inflorescence, appears head-like, but flowers in crowded axils subtended by a reduced leaf 35 mm. × 20 mm. wide; Bract, leaf-like, 6 mm. × 2 mm. wide, triangular, strigose, crenulate, ciliate; Calyx, tube 4 mm. + lobes 7 mm., narrowly acuminate, sparsely ciliate; Hypanthium, 3.5 mm.; Corolla, tube 11 mm. + lobes 5 mm., color purple; Stamens, #5, included; Filaments, scale-like, white, hairy; Anthers, 4 mm., yellow. Ovary, inferior; Style, 12 mm.; Stigma, 3-lobed (Described from Coll. No. 1982, 15 July 2018).

- North Washington Open Space, Garden escapee from the front yard of 633 Alaska Street, where this plant is cultivated in the front yard. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.73 km. north northeast of the GNIS location of Golden. Along the north fence. Tom Schweich 1982. 15 Jul 2018. ( CS JCOS s.n. KHD00069226 ) Garden escapee from the front yard of 633 Alaska Street, where this plant was cultivated in the front yard. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.73 km. north northeast of the GNIS location of Golden. Along the north fence. Tom Schweich 2195. 5 Aug 2019. ( CDA COLO ) . .

Campanula rapunculoides L.  Rampion Bellflower. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Golden, In alley at 1000 10th Street.13N 0481141E 4400476N. Jim Ratzloff 21 Jul 1976. ( KHD9032 ) Alley between Arapahoe Street and Cheyenne Street, north of 5th Street. Tom Schweich 1057. 18 Aug 2014. ( UC2045781 ) . .

Campanula rotundifolia L.  Harebell. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, to 40 cm.; Leaves, basal, ?, cauline, alternate, ±lance-linear, 52 mm. × 2.5 mm. wide; Inflorescence, solitary and loose racemes; Pedicel, 9 mm.; Calyx, tube 2.5 mm. + 5 lobes 2.5 mm. = 5.0 mm.; Corolla, 13 mm, blue-purple; Capsule, nodding, 5.5 mm. × 4.5 mm. wide, opening by pores near the base. Described from Coll. No. 1246, 24 July 2015.

- Apex Gulch, wo plants were well above the stream-bed level, other from dry protion of stream bed. By Peabody Museum (Harvard Univ.) in the shallow canyon of Apex Creek. 13N 0481886E 4396586N. Ernest H. Brunquist, with Jon Friedlander 112. 16 Jul 1960. ( KHD9042 ) .

- Clear Creek Canyon, Clear Creek Canyon. Marcus E. Jones 243. 20 Jun 1878. ( COLO00216408 ) .

- Lippincott Property, More sprawling than erect, deep forest duff in ponderosa pine woodland, with Collomia linearis, Eriogonum umbellatum, Lappula occidentalis, and Sedum lanceolatum. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, southwest corner near the railroad tracks, 22.3 km. north northwest of the GNIS location of Golden. Tom Schweich 2151. 13 Jul 2019. ( CIBO COLO JCOS s.n. KHD ) .

- Little Scraggy Peak, Tom Schweich 7/23/2019. .

- Mount Falcon Park, USA, Colorado, Jefferson County, Morrison, along the trail at Mount Falcon Park. J. Reseigh 8. 2 Jun 2000. ( CS80221 ) .

- North Table Mountain, Zeise, Larry Steven, 1976 .

- North Table Mountain Park, Four open flowers, many others in bud, around base of boulder. Tom Schweich 6/1/2017. .

- Ranson/Edwards Homestead Open Space Park, North slope along intermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 204 m. west of Plainview Road. Tom Schweich 1254. 26 Jul 2015. ( CAS JCOS s.n. KHD00062049 UCR267467 ) .

- South Table Mountain, A lava capped mesa, locally common but not on mesa top or other exposures. Front Range, South Table Mountain, First major North facing gully East of castle Rock. Near head of West fork of gully North facing slope. 13N 0482060E 4400481N. Loraine Yeatts 1471. 24 Jun 1987. ( COLO00216457 KHD25150 ) .

- Windy Saddle Park, Partially shaded north-facing rocky slopes. Southeast Windy Saddle Park, lower portion of unnamed canyon on east side of Lookout Mountain, 2.28 km south southeast of the GNIS location of Golden. Tom Schweich 1246. 24 Jul 2015. ( JCOS s.n. KHD00062046 UC ) .

Cannabaceae

Celtis reticulata Torr.  (Syn: Celtis laevigata Willd. var. reticulata L. D. Benson ) Net-Leaved Hackberry. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, Zeise, Larry Steven, 1976 .

- North Table Mountain Park, Several small trees scattered on the hillslope. Lower east slopes of North Table Mountain, along the upper portion of the Lithic Trail and nearby portions of the North Table Loop, 3.77 km. northeast of the GNIS location of Golden Tom Schweich 1799. 8 May 2018. ( JCOS s.n. KHD00068914 ) .

- North Washington Open Space, Determination tentative, made from unique leaf galls. Tom Schweich 3/27/2017. Just off the top of the hill to the south. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1798. 6 May 2018. ( KHD00069131 UCR ) .

- South Table Mountain, A lava capped mesa in the Denver Formation; on S facing slope; in small scattered groups near base of slope. South Table Mountain, below Castle Rock. 13N 0481900E 4400200N. Loraine Yeatts 877. 21 May 1984. ( COLO00793240 KHD21805 ) . .

Humulus lupulus L. var. neomexicanus A. Nelson & Cockerel.  Wild Hops. CalPhotos. Jepson eFlora. SEINet Taxon.

- Deadman Gulch, Also seen or collected here: Crataegus succulenta, Prunus americana, Epilobium hirsutum, and Arctium minus. Nomenclature per FNANM. In a small wetland in Deadman Gulch about mid-way between Kinney Run and Apex Park, 2.37 km. south of the GNIS location of Golden. Tom Schweich, with Susan Panjabi and Zachariah Wilson 2417. 11 Aug 2020. ( COLO CS KHD OBI ) .

- North Table Mountain, Nomenclature per FNANM. Zeise, Larry Steven, 1976 .

Caprifoliaceae

Lonicera morrowii A. Gray.  Morrow's honeysuckle. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Occassional on a steep, disturbed slope above Clear Creek and growing in loose gravelly clayey soils with Golden current. North bank of Clear Creek about 100 ft East of Washington St. in the city of Golden. 13N 0481012E 4400694N. Stanley Smookler 184. 2 May 1999. ( KHD33199 ) . .

Lonicera tatarica L.  Tatarian Honeysuckle. CalPhotos. Jepson eFlora. SEINet Taxon.

Shrub to small tree, 2 m.; Leaves, opposite, 24 mm. × 17 mm. wide, simple, entire, petiole, 1.5 mm.; Peduncle, 10-13 mm.; Flowers, in pairs, subtended by bracts, bisexual; Bracts, small, at base of calyx; Calyx, tube 2.0 mm. + lobes 0.5-1.0 mm.; Corolla, tube 12.5 mm. + lobes 12 mm., pink, hairy inside; Ovary, inferior; Stamens, #5, exserted, versatile; Style, #1, exserted, hairy; Stigma, capitate. Disturbed places, native to Siberia, sporadic escapee from cultivation, berries possibly toxic. (Described from Coll. No. 1591, 2 May 2017.)

- North Washington Open Space, Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Hughway 93 and Washington Avenue. Several plants near the east end of the parcel, close to North Ford Street. Tom Schweich 1591. 2 May 2017. ( CDA COLO2299733 CS KHD00065386 ) Same plant as Coll. No. 1591. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue. Several plants near the east end of the parcel, close to North Ford Street. Tom Schweich 1705. 14 Jul 2017. ( CS KHD00065388 ) . .

Symphoricarpos occidentalis Hook.  Western Snowberry. CalPhotos. Jepson eFlora. SEINet Taxon.

Woody perennial to 50 cm., forming dense colonies in moist open swales, [spreading by long sparsely-branched rhizomes,] Twigs without lenticels, minutely hairy when young; Leaves opposite, ovate, to 7 cm. × 5 cm. wide, reduced above, thick, approaching leathery, pinnately veined, upper surface glabrous, lower few short white hairs, margin slightly wavy, slightly rolled under, sparsely curved hairy; Petioles to 7 mm.; Inflorescence axillary (and terminal?); Floral bracts triangular, 3 mm.; Flowers in dense axillary clusters, bisexual, ±radial, possibly slightly bilateral, 2 or more whorls; Corolla fused at base, tube 2-3 mm., throat with recurved hairs, lobes 5, 2.0-3.5 mm, slightly longer than tube, hairy within at level of stamen insertion, white with magenta mottling; Stamens 5, alternate, exserted or barely exserted; Filaments, 3.3-3.6 mm., tapered; Anthers versatile; Ovary inferior Pistil 1; Style exserted or barely exserted; Stigma entire; Fruit a berry, green when young, mature color and size unknown. (Described from specimen seen on Green Mountain, 2 August 2014 and Coll. No. 1252, 26-Jul-2015).

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Locally common. North Table Mountain. TRS: T3S R70W S21. R.J. Rondeau, wth C.A. Pague, M.A. Duff 9257. 16 Jun 1992. ( COLO00828178 ) Lowest north slopes of North Table Mountain, along the Mesa Spur Trail, 0.6 km. south of 58th Avenue, 4.6 km. north northeast of the GNIS location of Golden. Tom Schweich 1506. 22 Jul 2016. ( COLO2299717 CS EIU JCOS s.n. KHD00063946 OBI83337 ) .

- Ranson/Edwards Homestead Open Space Park, Banks of an intermittent stream. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 175 m. west of Plainview Road. Tom Schweich 1252. 26 Jul 2015. ( JCOS s.n. KHD00061542 UCR267465 ) Relatively moist area, but not quite a wetland. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, then 870 m. west of Plainview Road, nearing the railroad tracks at the top of the park. Tom Schweich 1285. 28 Aug 2015. ( JCOS s.n. KHD00062045 UC UCR267482 ) .

- South Table Mountain, South Table Mountain, along E-W road West of Quaker Road. 13N 0481105E 4400440N. Loraine Yeatts 752. 29 Jul 1983. ( COLO00223826 KHD19243 ) . .

Symphoricarpos rotundifolius A. Gray.  (Syn: S. oreophilus A. Gray , S. rotundifolius A. Gray var. parishii (Rydb.) Dempster , S. rotundifolius A. Gray var. rotundifolius , S. vaccinioides Rydb. ) Roundleaf Snowberry. CalPhotos. Jepson eFlora. SEINet Taxon.

Shrub, to 70 cm.; Leaves, opposite, 12 mm. × 9 mm. wide, ovate, margin entire; Inflorescence, terminal racemes on short branches; Calyx, 1.5 mm.; Corolla, tube 10 mm. + lobes 1.7 mm., color ochroleucus, few hairs near base of tube (around the style); Stamens, #5; Filaments, free 2 mm.; Ovary, inferior; Style, 3.5 mm., glabrous; Fruit, berry, white. Described from Coll. No. 1654, 1 Jun 2017.

- Colorado School of Mines Survey Field, Mixed foothills shrubs and grasses, also seen or collected here: Toxicodendron rydbergii, Bromus secalinus, Senecio integerrimus, and Lupinus argenteus. Southernmost edge of the Survey Field, adjacent to Stonebridge HOA lands, high plains at the base of the Rocky Mountain Front Range, 3.26 km. south of the GNIS location of Golden. Tom Schweich 2363. 20 Jun 2020. ( COLO KHD OBI REGIS ) .

- Golden, Patch on West facing slope. Above 19th Street in Golden. 13N 0481001E 4399557N. Loraine Yeatts 826. 29 Aug 1983. ( COLO00225250 KHD19242 ) Foot hills near Golden. Marcus E. Jones 252. 17 Jun 1878. ( COLO00225300 COLO00225318 ) .

- Lookout Mountain, Above Golden. Mrs. Ella Bailar 1905. ( COLO00694117 ) .

- North Table Mountain, White, Sally, and Loraine Yeatts, 1994 as S. oreophilus A. Gray Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, North slopes of North Table Mountain, at the base of the steepest slopes, near North Table Loop trail, 4.7 km. north northeast of the GNIS location of Golden. Tom Schweich 1654. 1 Jun 2017. ( CDA CS JCOS s.n. UCR ) .

- South Table Mountain, In West facing gully, locally common on sids of and in gully a lava capped mesa in the Denver Formation. South of Castle Rock. 13N 0482044E 4400232N. Loraine Yeatts 902. 6 Jun 1984. ( KHD20413 ) Locally common, against 50ft North facing, vertical, seeping cliff face a lava capped mesa in the Denver formation. Front Range, South Table Mountain. 13N 0483182E 4400996N. Loraine Yeatts 2397. 18 Jun 1990. ( KHD28282 ) . .

Viburnum lantana L.  Wayfaringtree. CalPhotos. Jepson eFlora. SEINet Taxon.

- Mount Zion, Mount Zion, West of Golden, bordering ditch on lower slope of mountain. 13N 0479356E 4399139N. Stanley Smookler 33. 20 May 1990. ( KHD29122 ) .

Caryophyllaceae

Cerastium arvense L. ssp. strictum Gaudin.  (Syn: Cerastium strictum L ) Field Chickweed. CalPhotos. Jepson eFlora. SEINet Taxon.

Common early-flowering perennial, to 20 cm.; Leaves, opposite, broadly linear, 15 mm. × 3 mm. wide, stipules absent, tufts of leaves in lower axils; Sepals free; Petals >> sepals, white, notched; Styles (4)5.

- Apex Park - Northern Parcel, Tom Schweich 4/21/2020. Drier divide between two swales, open grassland at edge of ponderosa pine woodland, one Delphinium nuttallii here. Also collected here: Leucocrinum montanum, and Viola nuttallii. North Parcel, western edge, Rocky Mountain Front Range, top of the initial slope, small ravine, 4.7 km south-southwest of the GNIS location of Golden. Tom Schweich 2258. 6 May 2020. ( JCOS s.n. KHD UC ) .

- Colorado School of Mines Survey Field, Grassy openings beside a small watercourse, about 350 m south of City of Golden Beverly Heights Park, 2.0 km south southwest of the GNIS location of Golden. Tom Schweich, with Jessica Smith 1078. 23 Apr 2015. ( CAS OBI82122 UC2045774 UCR265979 ) .

- Golden, Elof Hanson 28 May 1892. ( KHD34892 ) Golden Will C. Ferril 18 May 1901. ( COLO00076794 ) .

- Heritage Square, Open Ground. Ernest H. Brunquist 89. 27 May 1960. ( CS37644 ) .

- Kinney Run, 40 m. east of and above the Kinney Run Trail, in the sandstone of a hogback, at the base of Cercocarpus montanus, which itself was rooted in a fracture of the bedrock, 3.22 km. south of the GNIS location of Golden. Tom Schweich 1780.1 12 Apr 2018. ( COLO02348076 ) .

- Lippincott Property, Common early spring forb, growing with Mertensia lanceolata, Thermopsis, Prunus virginiana, and Pinus ponderosa. Jointly owned by City of Boulder OSMP and Jefferson County Open Space, near the northern edge of the property and the Boulder County boundary, grassland in a ponderosa pine woodland, 23.7 km. north northwest of the GNIS location of Golden. Tom Schweich 2028. 26 May 2019. ( CDA CIBO CS EIU ) Jointly owned by City of Boulder OSMP and Jefferson County Open Space, south parcel, high prairie above Rocky Flats, 21.8 km. north northwest of the GNIS location of Golden. Tom Schweich, with Irene Weber 2021. 24 Apr 2019. ( CIBO JCOS s.n. KHD REGIS ) .

- Lookout Mountain, Lookout Mountain on slopes and summit. 13N 0479599E 4397885N. Unknown 18 May 1913. ( KHD37483 ) .

- Magic Mountain, Tom Schweich 4/18/2018. Heritage Dells area, 41 m. east of the Kinney Run Trail, in thin soil on top of a very low hogback, 4.3 km. south of the GNIS location of Golden Tom Schweich 1786. 18 Apr 2018. ( COLO02348043 UCR ) .

- Mount Galbraith Park, In the saddle near the top of Nightbird Gulch trail. Tom Schweich 1097. 3 May 2015. ( JCOS s.n. KHD56902 ) .

- North Table Mountain, as C. arvense Kilburn, Paul D., and Sally L. White, 1992 .

- Ranson/Edwards Homestead Open Space Park, East-facing grassy slopes. Stevens parcel immediately south of Ranson/Edwards parcel, 1.5 km south of the GNIS location of Plainvew, and 3.65 km south southwest of Rocky Flats. Tom Schweich 1327. 5 May 2016. ( COLO02348415 CS JCOS s.n. KHD00064107 ) .

- South Table Mountain, North facing mesa rim under and among dense shrub cover, occasional in local area but not found on South facing mesa slopes. South Table Mountain. 13N0483297E 4401386N. Loraine Yeatts 1199. 19 May 1985. ( COLO00076695 KHD24448 ) .

- Tin Cup Ridge, Among grasses on the edge of the brush. Lower east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.80 km. south southeast of the GNIS location of Golden. Tom Schweich 1859. 24 May 2018. ( JCOS s.n. KHD00068919 UC ) .

- Windy Saddle Park, Lowest slopes of Lookout Mountain, just above highest plains, western edge of Windy Saddle Park, near Lookout Mountain Road, 1.95 km. southwest of the GNIS location of Golden. Tom Schweich 1610. 13 May 2017. ( CDA JCOS s.n. KHD00065344 ) . .

Cerastium brachypodum (Engelmann ex A. Gray) B. L. Robinson.  (Syn: Cerastium nutans Raf. var. brachypodum Engelmann ex A. Gray ) Short-stalked mouse-ear chickweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lippincott Property, Collected with Phleum pratense and Poa secunda. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, open wet prairie in southeast portion, 21.8 km. north northwest of the GNIS location of Golden. Tom Schweich 2118.1 1 Jul 2019. ( KHD ) .

- North Table Mountain, as C. nutans var. brachypodum White, Sally, and Loraine Yeatts, 1994 .

- South Table Mountain, South Table Mountain, wet area near rock quarry. 13N 0484328E 4400089N. Janet L. Wingate, with Esther Witte 2360. 1 Jun 1983. ( KHD13187 ) Abundant at the head of SW facing gully with flowing water. South Table Mountain. 13N 0482818E 4400058N. Loraine Yeatts 544. 1 Jun 1983. ( KHD19240 ) South Table Mountain, in seepage below reservoir where East-West raod turns to North. 13N 0481105E 4400440N. Mary E. Edwards 430.1 1 Jun 1983. ( KHD19241 ) . .

Cerastium fontanum Baumgarten ssp. vulgare (Hartman) Greuter & Burdet.  Common Mouse-Ear. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lippincott Property, Jointly owned by City of Boulder OSMP and Jefferson County Open Space, northern portion of property, sunny site on the south bank of Bull Gulch, 22.9 km. north northwest of the GNIS location of Golden. Tom Schweich 2072. 6 Jun 2019. ( CIBO JCOS s.n. KHD ) . .

Dianthus armeria L.  Deptford Pink. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lippincott Property, Also collected here: Heterotheca villosa, Potentilla recta, Prunella vulgaris, and Veronica anagallis-aquatica Found at this location and numerous places downslope, and in the adjacent northwest corner of Ranson/Edwards. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, open wet prairie in southeast portion, 21.7 km. north northwest of the GNIS location of Golden. Tom Schweich 2110.1 1 Jul 2019. ( CIBO JCOS s.n. KHD OBI UCR ) .

- Ranson/Edwards Homestead Open Space Park, Several plants among fallen trunks of Ponderosa pine. Location is 35 m. west of west boundary of open space property. Tom Schweich 8/20/2015. Northwest corner of park, 1.7 mi. west on CO highway 72 from CO Highway 93, 2.2 mi. generally north on Plainview Road, then 445 m. west to the base of a east limb of a small hogback, 21.4 km. north northeast of the GNIS location of Golden, Tom Schweich 2161.1 16 Jul 2019. ( CAS CDA JCOS s.n. KHD ) . .

Eremogone fendleri (A. Gray) Ikonnikov.  (Syn: Arenaria fendleri A. Gray ) Fendler's Sandwort. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, tufted, to 30 cm.; Stem, proximal glabrous, distal short glandular hairy “peg-like hairs”; Leaves, mostly basal, cauline, stipules absent, opposite, 50 mm. × 0.5 mm. wide, linear to needle-like, erect to appressed, margin finely scabrous, tip small spinulose; Inflorescence, open cyme; Pedicels, 3-8 mm.; Sepals, #5 distinct, 4.5-5.0 mm. × 1 mm. wide, glandular hairy (or stipitate glandular); Petals, white, 5 mm., entire; Stamens, #10; Anthers, purple; Styles, #3. Described from Coll. No. 1270, 1374, and 2372.

- North Table Mountain, as Arenaria fendleri Zeise, Larry Steven, 1976 .

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.8 km north northeast of Golden, 1.4 miles north of CO State Highway 72 on Plainview Road, 212 m. northeast of Plainview Road. Tom Schweich 1270. 29 Jul 2015. ( JCOS s.n. KHD00060597 ) High plains above Rocky Flats, 15.8 km. north northwest of the GNIS location of Golden, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.4 mi. north on Plainview Road, then 310 m. north of Plainview Road. Tom Schweich 1374. 29 May 2016. ( CAS UC UCR277976 ) Mixed short grasses and forbs. 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.6 mi. northerly on Plainview Road, then 470 m. southwest of the road upslope. 16 km. north northwest of the GNIS location of Golden. Tom Schweich 1411. 10 Jun 2016. ( CS EIU JCOS s.n. OBI83312 ) This site a little more dry and rocky than the surrounding area; also collected here or nearby: Tragopogon dubius, Penstemon secundiflorus and P. virens, Carex inops var. heliophila, and Koeleria macrantha. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 1.6 mi. generally north on Plainview Road, then 90 m. east along a terrace on the south side of an ephemeral stream, 19.8 km. north northwest of the GNIS location of Golden. Tom Schweich 2372. 23 Jun 2020. ( CDA COLO KHD REGIS ) . .

Gypsophila elegans M. Bieb.  Showy Baby's Breath. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lookout Mountain Nature Center, Distuirbed roadside, probalbly planted with commercial wildflower mix. Jefferson County Native Center, Lookout Mountain. 13N 0478957E 4397358N. Stanley Smookler 15 Jun 1985. ( KHD21871 ) . .

Gypsophila paniculata L.  (Syn: G. paniculata L. var. p. ) Baby's Breath. Weed: CO DofA, List: Watch. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Washington Open Space, Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1666. 16 Jun 2017. Colorado Noxious Weed Watch List. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue. Northwest central part of parcel, off the top of the hill, getting close to the neighbors' fences. Tom Schweich 1710. 14 Jul 2017. ( KHD00065586 UCR ) . .

Holosteum umbellatum L.  Jagged Chickweed. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, to 5 cm.; Stem, single, glandular distally; Stipules, absent; Leaves, cauline, opposite, 6 mm. × 1.7 mm. wide, oval, margins, entire, glandular; Inflorescence, umbellate; Pedicels, 2.5-9.0 mm., reflexed in flower; Sepals, #5, all distinct, 2.7-3.0 mm. × 1.2 mm. wide, ovate, green, margin scarious; Petals, #5, 2.5 mm. × 1.2 mm. wide, deltoid, tip erose; Stamens, #5; Styles, #2(3?), 1 entire, 1 forked (with 2 stigmas) (Described from Coll. No. 2246, 21 April 2020.)

- Apex Park - Northern Parcel, Also here: Collinsia parviflora. Approximate center of area, mid slope, northeast-facing nose of ridge, 4.7 km. south of the GNIS location of Golden. Tom Schweich 2246. 21 Apr 2020. ( KHD ) . .

Paronychia jamesii Torr. & A. Gray.  James' Nailwort. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial erect subshrub, to 15 cm.; Leaves, cauline, opposite, 10 mm., linear, pointed, stipules, 4-5 mm., papery; Inflorescence, many-flowered cyme; Sepals, #5, 2.3 mm., greenish, awn-tipped; Petals, absent. Described from Coll. No. 1263, 29 July 2015.

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Uncommon. North Table Mountain. TRS: T3S R70W S22. R.J. Rondeau, with C.A. Pague, M.A. Duff. 9273. 16 Jun 1992. ( COLO 00828111 ) Thin soils on top of the mesa. Top of North Table Mountain, along an old road and former powerline headed about 290 m. north to a radio tower, 2.6 km. north of the GNIS location of Golden Tom Schweich 1491. 13 Jul 2016. ( EIU JCOS s.n. KHD00063524 ) Very thin vegetation with patches of bare mesa caprock. Top of North Table Mountain, near Golden Cliffs Trail, 1.70 km. north of the GNIS location of Golden. Tom Schweich 1659. 8 Jun 2017. ( CDA UCR ) .

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 15.8 km north northeast of Golden, 1.4 miles north of CO State Highway 72 on Plainview Road, 130 m. northeast of Plainview Road. Tom Schweich 1263. 29 Jul 2015. ( JCOS s.n. KHD00060469 ) .

- South Table Mountain, On lava bedrock flats near relatively high point of meas, locally abundant on lava pavement over whole mesatop. South Table Mountain. 13N 0483440E 4400436N. Loraine Yeatts 191. 20 Jul 1983. ( KHD19239 ) On lava bedrock flats near realtively high int of meas, locally abundant on lava pavement over whole top of mesatop. South Table Mountain. 13N 0483440E 4400436N. Loraine Yeatts 678. 11 Jul 1983. ( COLO00000604 KHD19238 ) . .

Pseudostellaria jamesiana (Torr.) W. A. Weber & R. L. Hartm.  (Syn: Stellaria jamesiana Torr. ) Tuber Starwort. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Gulch, USA, Colorado, Jefferson, Apex Gulch Trail O. O. Otto, Jr. 23 Jun 1995. ( KHD00057187 ) .

- Golden, Golden Will C. Ferril 18 May 1901. ( COLO00001156 ) .

- Lippincott Property, Also collected here: Osmorhiza depauperata and Woodsia oregana. Jointly owned by City of Boulder OSMP and Jefferson County Open Space, south bank of Bull Gulch, 23.0 km. north northwest of the GNIS location of Golden. Tom Schweich 2069.2 6 Jun 2019. ( Golden ) .

- Mount Falcon Park, USA, Colorado, Jefferson County, Mount Falcon Park. Berta Anderson 1657. 21 Jun 1979. ( KHD22682 ) . .

Saponaria officinalis L.  Bouncingbet. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain Park, Colorado Noxious Weed List B. West side of North Table Mountain, beside the former quarry road now forming a part of North Table Loop, 2.8 km. north of the GNIS location of Golden. Tom Schweich 1743. 15 Aug 2017. ( JCOS s.n. KHD00065358 ) .

- North Washington Open Space, Tom Schweich 7/14/2017. .

- Ranson/Edwards Homestead Open Space Park, Colorado Noxious Weed List B. In the ditch beside Plainview Road, 1.7 mi. west on CO Highway 72 from CO Highway 93, then 1.3 mi. generally north on Plainview Road, 15.45 km. north northwest of the GNIS location of Golden. Tom Schweich 1983. 20 Jul 2018. ( CS JCOS s.n. KHD00068922 ) . .

Silene L.  Catchfly. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, In dense vegetation at edge of old road. Flood plain of Coal Creek, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. generally north on Plainview Road, then 345 m. generally east on an old road leading to Coal Creek; 14.7 km. north northwest of the GNIS location of Golden. Tom Schweich 1465. 27 Jun 2016. . .

Silene antirrhina L.  Sleepy Catchfly. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, to 60 cm.; Stem, proximal finely pubescent, distal glabrous, distal internodes frequently glutinous (a.k.a., “sticky band below upper leaves”); Leaves, basal, withered, cauline, opposite, connate proximally, 45 mm. × 8 mm. wide, oblanceolate, reduced above, margin ciliate; Inflorescence, cymose; Calyx, 8 mm. × 3.7 mm. fused; Petals, white to pink, barely exserted from calyx, withered and withdrawn after drying; Styles, #3. (Described from Coll. No. 1888, 28 May 2018.)

- Colorado School of Mines Survey Field, Southeast-facing slope, along an unnamed stream in the south end of the Survey Field, 2.44 km. south of the GNIS location of Golden. Tom Schweich 1888. 28 May 2018. ( KHD00068918 ) .

- Golden, foothills near Golden. Marcus E. Jones 279. 20 Jun 1878. ( NMC10525 ) .

- South Table Mountain, Juncus interior A lava capped mesa in the Denver formation. occasional, Front Range, S.Table Mt. at base of S facing slope near seep. 13N 0483440E 4400436N. Loraine Yeatts 3030. 2 Jul 1991. ( KHD35616 ) . .

Silene csereii Baumg.  Balkan Catchfly. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, erect, to 50 cm.; Stem, simple, branched only in the inflorescence, without dark or sticky band; Inflorescence, glabrous; Calyx, tube 9 mm. × 8 mm. across + lobes 2 mm., indented at base around peduncle, glabrous, veins obscure, reticulations faint; Corolla, white to cream; Stamens, #10, exserted 10 mm.; Filaments, white to purple-tinged distally; Seeds, unknown. (Described from Coll. No. 1922, 3 June 2018.)

- Ranson/Edwards Homestead Open Space Park, High plains above Rocky Flats, 1.7 mi. west on CO Highway 72, Coal Creek Canyon Road, from CO Highway 93, 0.8 mi. generally north on Plainview Road, then 250 m. a little south of east on a gasline access road to a terrace overlooking Coal Creek. Tom Schweich 1922. 3 Jun 2018. ( CAS JCOS s.n. KHD00068921 OBI170745 ) . .

Silene drummondii Hook.  Drummond's Campion. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, “Golden City” E. L. Greene 10 Jun 1872. ( BRU42559 ) . .

Silene latifolia Poir.  (Syn: Lychnis alba Mill. , Melandrium dioicum (L.) Cosson & Germain ) Bladder Campion. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, In a thicket, primarily of Prunus virginiana, along a break in slope. Also collected in these thickets: Polygonum douglasii, Cynoglossum officinale, and Arctium minus. High plains above Rocky Flats, west 1.7 mi. on CO Hwy 72 from CO Hwy 93, generally north 1.0 mi. on Plainview Road, then 400 m. east to a small break in slope, 19.6 km. north northeast of the GNIS location of Golden. Tom Schweich 2127. 6 Jul 2019. ( JCOS s.n. KHD OBI UCR ) . .

Silene vulgaris (Moench) Garcke.  Maidens Tears. CalPhotos. Jepson eFlora. SEINet Taxon.

Perennial herb, erect, to 55 cm., generally glabrous throughout; Stem, lacking dark sticky band, most, i.e., 7/8 stems, simple unbranched; Stipules, 0; Leaves, basal, unknown, cauline, opposite, 44 mm. × 6-7 mm. wide, sessile, bases connate; Calyx, tube 8 mm. × 5.5 mm. wide + lobes 2 mm. somewhat inflated, many green veins, not particularly prominent; indented around peduncle (when pressed and dry); Corolla, 13 mm., limb 6 mm., white; Stamens, #10, exserted; Filaments, white (definitely not purple); Seeds, 1 mm., brown, papillate. (Described from Coll. No. 1463, 27 June 2016).

- Ranson/Edwards Homestead Open Space Park, Mixed grasses and forbs beside the old road, on the accessible side of a gate that prevents cows from going down to Coal Creek. High plains above Rocky Flats, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. north on Plainview Road, then 250 m. east on old ranch road; 15.2 km. north northwest of the GNIS location of Golden. Tom Schweich 1463. 27 Jun 2016. ( CAS CS JCOS s.n. KHD00063540 UC ) . .

Spergularia Sand Spurrey. CalPhotos. Jepson eFlora. SEINet Taxon. Not known from Golden, but there are collections of S. media and S. rubra from Arvada, Lakewood, and Rocky Flats. 12/31/2014. .

Stellaria longifolia Muhl. ex Willd.  CalPhotos. Jepson eFlora. SEINet Taxon. Not Known from Golden, but there are two collection from Rocky Flats and one from Meyer Ranch. 12/31/2014. .

Stellaria media (L.) Vill.  (Syn: Alsine media L. ) Common Chickweed. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual; Stem decumbent, internode hairs in a line; Stipules 0; Sepals ±free, 4 mm, 6 mm in fruit, glandular-hairy, margins translucent; Flower white, petals present, 2-lobed, ~¼ to base; Fruit spheric (Described from Collection No. 804, 4-Apr-2012).

- Golden, disturbed ground. Golden, 611 Water Street, Golden. 13N 0481105E 4400440N. Jim Ratzloff 22 Jul 1976. ( KHD10444 ) .

- North Washington Open Space, in mowed area Tom Schweich 5/2/2017. .

Chenopodiaceae

Atriplex canescens (Pursh) Nutt.  Four-wing Saltbush. CalPhotos. Jepson eFlora. SEINet Taxon.

- South Table Mountain, Foothill shrub; dry hillside with Cercocarpus, Rhus trilobata, and Stipa. Arapaho National Forest: Golden South Table Mountain. Harley A. Orahood 24 Jun 1981. ( RM451862 ) SW facing steep slope below cliff forming edge of mesatop, occassional. South Table Mountain. 13N 0482030E 4400462N. Peter G. Root 8312. 1 Jul 1983. ( KHD20624 ) Lowest portion of Lubahn Trail. Tom Schweich 10/19/2019. . .

Atriplex hortensis L.  Garden Orache. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Several plants growing in the lawn. Near Colorado School of Mines, Golden. 13N 0480571E 4399949N. Stanley Smookler 103. 21 Aug 1995. ( KHD5395 ) . .

Chenopodium album L.  Lambsquarters. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Also collected nearby: Opuntia macrorhiza, Potentilla pensylvanica, and Opuntia macrorhiza. Near the north boundary of the park, lower north slopes of North Table Mountain, in what appears to be the hummocky terrain of an ancient landslide, 6.16 km. north northeast of the GNIS location of Golden. Tom Schweich 2138. 11 Jul 2019. ( CDA JCOS s.n. KHD OBI ) .

- North Washington Open Space, East end of parcels, adjacent to social trail over top of hill. Var. album if infraspecific names are to be applied. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1750. 31 Aug 2017. ( KHD00065155 UCR ) .

- South Table Mountain, A lava capped mesa in the Denver Formation, common. South Table Mountain. Along Quaker Road near gate. 13N 0484293E 4399631N. Loraine Yeatts 681. 11 Jul 1983. ( KHD19695 ) . .

Chenopodium atrovirens Rydb.  Pinyon Goosefoot. CalPhotos. Jepson eFlora. SEINet Taxon.

- Heritage Square, open gnd ca 2 1/2 mi S of Golden. T R70W S10. Ernest H. Brunquist 71. 26 Sep 1959. ( CS37493 ) . .

Chenopodium berlandieri Moq.  Pitseed Goosefoot. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Dry, disturbed area. Base of Lookout Mountain, just off Lariat Trail. 13N 0479600E 4397885N. Mary E. Edwards 15 Sep 1991. ( KHD29800 ) .

- South Table Mountain, A lava capped mesa in the Denver Formation, occasional. South Table Mountain. Mesa top S of quarry. 13 0484293E 4399631N. Loraine Yeatts 1071. 18 Sep 1984. ( COLO 00234807 KHD20727 ) . [ COLO392934 is determined C. desiccatum A. Nelson ] .

Chenopodium fremontii S. Watson.  Fremont's Goosefoot. CalPhotos. Jepson eFlora. SEINet Taxon.

- Little Scraggy Peak, Also collected here: Juniperus scopulorum, Dieteria bigelovii, and Symphyotrichum porteri. Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 2.04 km. southwest of the Little Scraggy trailhead, 61.2 km. south of the GNIS location of Golden. Tom Schweich 2239.1 16 Sep 2019. ( KHD ) . .

Dysphania botrys (L.) Mosyakin & Clemants.  (Syn: Chenopodium b. L , Teloxys botrys (L.) Weber ) Jerusalem Oak Goosefoot. CalPhotos. Jepson eFlora. SEINet Taxon.

- Clear Creek Canyon, Clear Ck Canyon above Golden. C. Crandall 18 Jul 1896. ( CS6804 ) Clear Ck. T3S R71S S33. R [K] Gierisch & H Schwan 1667. 26 Aug 1952. ( CS 452316 ) .

- Heritage Square, open disturbed gnd. 2 1/2 mi S of Golden. T R70W S10. Ernest H. Brunquist 50. 25 Aug 1959. ( CS23933 KHD00013699 ) Near peabody Museum - Magic Mountain. 13N 0481578E 4396062N. Ernest H. Brunquist 30 Aug 1959. ( KHD10560 ) Near Magic Mountain property. 13N 0482253E 4395610N. Ernest H. Brunquist 30 Aug 1959. ( KHD10564 ) .

- South Table Mountain, In gravel along roadside, occasional. South Table Mountain, along the edge of road N of gate. 13N 0484293E 4399631N. Loraine Yeatts 823. 29 Aug 1983. ( COLO00242123 KHD19697 ) . .

Kochia scoparia (L.) Schrad.  (Syn: Bassia scoparia (L.) A. J. Scott , Bassia sieversiana (Pall.) W. A. Weber ) Common Red Sage. CalPhotos. Jepson eFlora. SEINet Taxon.

- Heritage Square, Growing unshaded in disturbed ground. T4N R70W S10. 13N 0481886E 4396586N. Ernest H. Brunquist 68. 23 Sep 1959. ( CS37487 KHD10607 ) . .

Salsola collina Pall.  Slender Russian Thistle. CalPhotos. Jepson eFlora. SEINet Taxon.

- Clear Creek Canyon, Roadside. Clear Creek Canyon: between Golden and Central City. William A. Weber 8966. 1 Oct 1954. ( CS26059 RM95176 ) . .

Salsola tragus L.  (Syn: S. australis R. Brown , S. iberica (Sennen & Pau) Botschantzev ex Czerepanov , S. kali , S. kali var. tenuifolia Tausch. , S. pestifer Nels. ) Tumbleweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Disturbed ground. 1100 11th Street, Golden. 13N 0480733E 4400565N. Jim Ratzloff 18 May 1976. ( KHD10643 ) .

- Heritage Square, open disturbed gnd along stream bed. ca 2 1/2 mi S of Golden. T4N R70W S10. Ernest H. Brunquist 58. 23 Sep 1959. ( CS37480 ) .

- South Table Mountain, A lava capped mesa in the Denver Formation, widespread and abundant along hardpacked clay roads. South Table Mountain, Along E-W Road, West of gate at the head of Quaker Road. 13N 0484293E 4399631N. Loraine Yeatts 838. 9 Sep 1983. ( COLO00240283 KHD19696 ) . .

Suckleya suckleyana (Torr.) Rydb.  Poison Suckleya. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Dried sink, often shallow pool in wet years, no standing water this year. Thlaspi arvense, Ambrosia psilostachya, Euphorbia marginata, and Verbena hastata associates, but thickly dominated by Helianthus annuus and shading plants up to 2 wks. previous. 3 mi S of Golden. F. Atherton Riedel 12 Aug 1940. ( RM184576 ) .

- Heritage Square, Dried sink, often shallow pool in wet years, no standing water this year. Thlaspi arvense, Ambrosia psilostachya, Euphorbia marginata, and Verbena hastata associates, but thickly dominated by .... ...thickly dominated by Helianthus annuus and shading plants up to two weeks previous. 3 mi S Golden. F. Atherton Riedel 12 Aug 1940. ( COLO00242180 ) .

Cleomaceae

Peritoma serrulata (Pursh) DC.  (Syn: Cleome serrulata Pursh ) Rocky Mountain Beeplant. CalPhotos. Jepson eFlora. SEINet Taxon.

- Heritage Square, 13N 0484886E 4396586N. Ernest H. Brunquist 17. 17 Aug 1959. ( CS23951 KHD9112 ) .

- North Table Mountain, as Cleome serrulata Zeise, Larry Steven, 1976 . .

Polanisia dodecandra (Linnaeus) de Candolle ssp. trachysperma (Torrey & A. Gray) H. H. Iltis.  (Syn: Polanisia trachysperma Torrey & A. Gray ) Sandyseed Clammyweed. CalPhotos. Jepson eFlora. SEINet Taxon.

- Clear Creek Canyon, On roadside. Transferred from USGS Herbarium, Denver, CO (2005). About 2 miles west of Tunnel No. 1, Clear Creek Canyon, U.S. Route 6. Hansford T. Shacklette 11 Aug 1969. ( COLO00857185 ) .

- South Table Mountain, Petals white, anthers red; ocassional locally. On Steep boulder strewn slope above Crataegus erythropoda stand with Tragia somosa, Mentzelia nuda, Ambrosia psilostachya. South Table Mt. a lava capped mesa in the Denver formation. 13N 0483440E 4400436N. Loraine Yeatts 2210. 3 Aug 1989. ( COLO00220590 KHD27134 ) .

Convolvulaceae

Convolvulus arvensis L.  Field Bindweed. Weed: CO DofA, List: C. CalPhotos. Jepson eFlora. SEINet Taxon.

- Kinney Run, Tom Schweich 7/6/2018. .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 Zeise, Larry Steven, 1976 .

- North Table Mountain Park, Very common trailing perennial. North Table Mountain. TRS: T3S R70W S22. R.J. Rondeau, with C.A. Pague, M.A. Duff 9272. 16 Jun 1992. ( COLO00828103 ) .

- North Washington Open Space, Colorado Noxious Weed List C. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1672. 16 Jun 2017. ( CDA KHD00065484 ) .

- Ranson/Edwards Homestead Open Space Park, Thinly vegetated rocky alluvial terrace. Colorado Noxious Weed List C. High plains above Rocky Flats, 15.2 km north northeast of Golden, 1.3 miles north of CO State Highway 72 on Plainview Road, 60 m. west of Plainview Road. Tom Schweich 1220. 16 Jul 2015. ( JCOS s.n. KHD00062144 UC UCR267687 ) .

- South Table Mountain, A lava capped mesa in the Denver Formation, on S facing slope below local meas high point, abundant, widespread, weedy on disturbed sites and long mesa to roads. South Table Mountain. 13N 0484293E 4399631N. Loraine Yeatts 629. 3 Jul 1983. ( COLO00249425 KHD19694 ) . .

Evolvulus nuttallianus Roem. & Schult.  (Syn: E. argenteus Pursh [illeg.] , E. pilosus Nutt. ) Shaggy Dwarf Morning Glory. CalPhotos. Jepson eFlora. SEINet Taxon.

First described by Pursh from a Nuttall collection on the Missouri River as E. argenteus [illeg.]

- North Washington Open Space, Top of hill, north side of social trail. Tom Schweich, with Margaret Henderson and Nancy von Burske 2319. 6 Jun 2020. ( KHD ) .

- South Table Mountain, South Table Mountain, On S facing slope above mesa high point among lava boulders. 13N 0484293E 4399631N. Loraine Yeatts 630. 3 Jul 1983. ( COLO00250324 KHD19704 ) .

Cornaceae

Cornus sericea L.  (Syn: Swida sericea (L.) Holub. ) Creek Dogwood. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lookout Mountain, Moist woods. Golden: Lookout Mountain. Earl L. Johnston, with G. G. Hedgecock 787. 26 Jul 1917. ( RM482753 ) .

- South Table Mountain, A lava capped mesa in the Denver Formation, shrubs against base of N facing 50ft vertical cliff in damp soil below seep. South Table Mountain. 13N 0484293E 4399631N. Loraine Yeatts 2233. 8 May 1990. ( KHD28280 ) A lava capped mesa in the Denver Formation, shrubs against base of N facing 50ft vertical cliff in damp soil below seep. South Table Mountain, Front Range. 13N 0484293E 4399631N. Loraine Yeatts 2393. 18 Jun 1990. ( COLO00253757 KHD28281 ) .

Crassulaceae

Crassula aquatica (L.) Schoenl.  Water Pygmy Weed. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, to 22 mm.; Stem, rooting, ascending; Leaves, cauline, opposite, bases conjoined, 4 mm. × 0.5 mm. wide; Flowers, borne singly in axils; Petals, #4, 1 mm. × 1.2 mm. wide; Seeds, #12, 0.4 mm., oblong, lines longitudinal. Described from Coll. No. 1689, 28 June 2017.

- Ranson/Edwards Homestead Open Space Park, Muddy flat with sheet flow water. High plains above Rocky Flats, 1.7 miles west on Colorado Highway 72 from Colorado Highway 93, 1.0 mile north on Plainview Road, then 350 m. east to a terrace overlooking Coal Creek. Tom Schweich 1689. 28 Jun 2017. ( KHD00065580 ) On a terrace overlooking Coal Creek, in still water that has been diverted to this terrace from a nearby ephemeral stream. High plains above Rocky Flats, 1.7 mi. west on CO Highway 72 Coal Creek Canyon Road from CO Highway 93, 1.1 mi. generally north on Plainview Road, then 410 m. east northeast, 15.50 km. north northwest of the GNIS location of Golden. Tom Schweich 1937. 14 Jun 2018. ( JCOS s.n. ) . .

Sedum lanceolatum Torr.  (Syn: Amerosedum lanceolatum (Torr.) A. Löve & D. Löve ) Spearleaf Stonecrop. CalPhotos. Jepson eFlora. SEINet Taxon.

Type collected by Edwin James on the Long Expedition, described by Torrey, 1827.

- Lippincott Property, Deep forest duff in ponderosa pine woodland, with Collomia linearis, Eriogonum umbellatum, Lappula occidentalis, and Campanula rotundifolia. Northernmost Jefferson County, parcel jointly owned by Jefferson County Open Space and City of Boulder OSMP, southwest corner near the railroad tracks, 22.3 km. north northwest of the GNIS location of Golden. Tom Schweich 2152. 13 Jul 2019. ( CIBO JCOS s.n. KHD UCR ) .

- Little Scraggy Peak, On a berm left by prospecting a quartz vein, area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, fairly close to Little Scraggy trailhead, about 4 mi. south of town of Buffalo Creek by Cty Rd 126, 60.3 km. south of the GNIS location of Golden. Tom Schweich 2179. 23 Jul 2019. ( CAS COLO KHD ) .

- Magic Mountain, Tom Schweich 4/18/2018. .

- Mount Falcon Park, USA, Colorado, Jefferson County, Morrison, along the trail at Mount Falcon Park. J. Reseigh 9. 2 Jun 2000. ( CS80222 ) .

- North Table Mountain, Zeise, Larry Steven, 1976 Kilburn, Paul D., and Sally L. White, 1992 .

- Ranson/Edwards Homestead Open Space Park, North-facing dry alluvial slope. 1.7 mi. west on CO Highway 72 Coal Creek Canyon Roaf from CO Highway 93, 1 mi. generally north on Plainview Road, then 290 m. a little south of east to a terrace overlooking Coal Creek. Tom Schweich 1919. 3 Jun 2018. ( JCOS s.n. KHD00069198 OBI124844 ) .

- South Table Mountain, On n. facing rocks; uncommon. S. Table Mt., a lava capped mesa in the Denver Formation; in 2nd stream gully N of quarry on N. facing rocks. UTM: 840006. Peter G. Root 853. 9 May 1985. ( COLO00254169 ) . .

Sedum stenopetalum Pursh.  Wormleaf Stonecrop. CalPhotos. Jepson eFlora. SEINet Taxon.

- South Table Mountain, A lava capped mesa in the Denver Formation, uncommon, only place seen on mesa, at base of N facing slope at head of gully. South Table Mountain, at the head of gully overlooking Rolling Hills Country Club. 13N 0484618E 4400246N. Loraine Yeatts 1082. 18 Sep 1984. ( KHD20729 ) A lava capped mesa in the Denver Formation, in crevices and on bedrock of N facing rimrock overlooking steep gully, occasional in local area but not found on any S facing slopes on mesa. South Table Mountain. 13N 0484293E 4399631N. Loraine Yeatts 2003. 30 May 1985. ( COLO00254177 KHD24427 ) [ COLO428407 is determined S. lanceolatum rather than S. stenopetalum. ] .

Dipsacaceae

Dipsacus fullonum L.  Fuller's Teasel. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Weedy roadside, abundant. 15900 W Colfax Street, Golden. 13N 0484426E 4397487N. Janet L. Wingate 6366. 15 Aug 1998. ( KHD6159 ) North side of Highway 58, between I-70 and Golden. 13N 0481522E 4401493N. Stanley Smookler 75. 28 Jul 1985. ( KHD21609 ) . .

Dipsacus laciniatus L.  Cutleaf Teasel. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.

- Heritage Square, In drainage ditch beside road, with D. fullonum (D. sylvestris Huds.). Heritage Square, outer foothills between Golden and Morrison. W. A. Weber 18053. 11 Jul 1990. ( COLO00296988 COLO00296996 COLO00297002 COLO00297010 COLO00297028 ) .

- Kinney Run, In a thicket of Rhus trilobata; also seen or collected nearby: Elaeagnus angustifolia, and Acer negundo. Colorado Noxious Weed List B. West side of Kinney Run between the creek and the houses of Stonebridge HOA, between Deadman Gulch and Tripp Ranch, 2.45 km. south of the GNIS location of Golden. Tom Schweich 2412. 31 Jul 2020. ( CAS COLO REGIS UC ) .

- North Washington Open Space, Tom Schweich 3/27/2017. .

Elaeagnaceae

Elaeagnus angustifolia L.  Russian Olive. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.

- Colorado School of Mines Survey Field, Several trees beside ephemeral creek in a distal part of the Survey Field. Colorado Noxious Weed List B. Eastern, lower section of the Survey Field, between US Highway 6 and Lookout Mountain, 2.2 km. south of the GNIS location of Golden. Tom Schweich 1437. 15 Jun 2016. ( CDA KHD00063962 UCR277994 ) .

- Kinney Run, Tom Schweich 7/31/2020. .

- North Washington Open Space, Near fence, no flower/fruit, yard debris, Castilleja, Artemisia frigida, Acroptilon. Tom Schweich 5/2/2017. Along the north fence. Spreading, one mature plant, one young plant to the west. Colorado Noxious Weed List B. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. Tom Schweich 1645. 30 May 2017. ( CDA CS EIU KHD00065372 ) .

- South Table Mountain, A lava capped mesa in the Denver Formation; in running water, uncommon. South Table Mountain; at head of NE facing gully overlooking Rolling Hills Country Club. 13N 0484293E 4399631N. Loraine Yeatts 1076. 18 Sep 1984. ( COLO00297259 KHD20858 ) .

Ericaceae

Arctostaphylos uva-ursi (L.) Sprengel.  Bearberry. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Golden. 13N 0481105E 4400440N. Elof Hanson 28 May 1892. ( KHD34894 ) .

- Little Scraggy Peak, Tom Schweich 7/23/2019. Also collected nearby: Senecio spartioides, Solidago nana, Jamesia americana, and Polygonum douglasii. Area generally disturbed by minerals prospecting, fuels reduction, and mountain biking recreation. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, northwest base of large granite outcrop, 1.83 km. southwest of the Little Scraggy trailhead, 60.9 km. south of the GNIS location of Golden. Tom Schweich 2238. 16 Sep 2019. ( CAS KHD OBI UCR ) .

- Lookout Mountain, Very abundant, pine woods and open mesas. Transferred from USGS Herbarium, Denver, CO (2005). Lariat Trail, Lookout Mountain. Hansford T. Shacklette 6655. 5 May 1962. ( COLO00858688 COLO00858696 ) A trailing evergreen shrub. On rocky slopes. With Pinus occidentalis. Lookout Mountain. 13N 0479600E 4397885N. Unknown 1 Jun 1913. ( KHD8120 ) .

- Tin Cup Ridge, Small patch growing in and around rocks. Along the top of “Tin Cup Ridge,” the northward extension of Dinosaur Ridge into Golden, 5.5 km. south of the GNIS location of Golden Tom Schweich 1355. 21 May 2016. ( JCOS s.n. KHD00063810 ) . .

Orthilia secunda (L.) House.  Sidebells Wintergreen. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Golden. William Huestis 1 Jul 1905. ( COLO00635094 ) . .

Pterospora andromedea Nutt.  Woodland Pinedrops. CalPhotos. Jepson eFlora. SEINet Taxon.

- Lippincott Property, Deep forest duff in Ponderosa Pine forest. Tom Schweich 5/26/2019. Tom Schweich 7/13/2019. . .

Pyrola asarifolia Michx.  (Syn: Pyrola rotundifolia L. ssp. asarifolia (Michx.) A. Löve ) Liverleaf Wintergreen. CalPhotos. Jepson eFlora. SEINet Taxon.

- Clear Creek Canyon, Growing in wet moss on the stream side in the shade of Pseudotsuga. Clear Creek side canyon. TRS: T4S R71W SEC2 Mark Duff 24. 25 Jun 1992. ( COLO00637397 ) .

- Golden, Golden. William Huestis 1 Jul 1905. ( COLO 00637181 ) .

- Lookout Mountain, Unknown 4 Jul 1922. ( KHD11112 ) Among pines in wet leaf mould or fallen pine needles. Unknown 8 Jul 1909. ( KHD8130 ) .

Euphorbiaceae

Chamaesyce fendleri (Torr. & A.Gray) Small.  (Syn: Euphorbia fendleri Torr. & A. Gray ) Fendler's Sandmat. CalPhotos. Jepson eFlora. SEINet Taxon.

- South Table Mountain, A lava capped mesa in the Denver Formation; on E facing slope of Jefferson County Open Space land in volcanic soil. South Table Mountain. 13N 0483017E 4400533N. Mary E. Edwards 501. 17 Jul 1983. ( KHD21246 ) . .

Chamaesyce glyptosperma (Engelm.) Small.  Ribseed Sand Mat. CalPhotos. Jepson eFlora. SEINet Taxon.

- Heritage Square, open disturbed gnd ca 2 1/2 mi S of Golden. T R70W S10. Ernest H. Brunquist 2. 14 Aug 1959. ( CS23941 KHD11112 ) .

- North Table Mountain Park, Top of North Table Mountain, near southern edge, 330 m. east of the USBR monument designated “North Table,” 1.64 km. north northeast of the GNIS location of Golden. Tom Schweich 1550.5 1 Sep 2016. ( JCOS s.n. KHD00063968 ) .

- South Table Mountain, A lava capped mesa in the Denver Formation; occasional on bare clay soil of mesatop. South Table Mountain. 13N 0482045E 4400439N. Loraine Yeatts 1087. 18 Sep 1984. ( COLO 00304329 KHD20731 ) . .

Chamaesyce serpyllifolia (Pers.) Small.  (=Euphorbia serpyllifolia Pers) Thymeleaf Sandmat. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Collected with: Salvia reflexa, Fallopia convolvulus and Prunus cf. P. pumila var. besseyi. High plains above Rocky Flats, approximate center of parcel, in a gravel bar on west side of the road, 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 1.2 mi. north on Plainview Road, 19.9 km. north northwest of the GNIS location of Golden. Tom Schweich, with Cindy Trujillo 2228.2 10 Sep 2019. ( JCOS s.n. ) . .

Euphorbia brachycera Engelm.  (Syn: Tithymalus brachyceras (Engelm.) Small ) Horned Spurge. CalPhotos. Jepson eFlora. SEINet Taxon.

- Deadman Gulch, Northeast-facing slope, more open stoney ground, on what appears to be a southeast to northwest trend approximating the trend of Eagle Ridge to the southeast. Above the watercourse locally named “Kinney Run,” between US Highway 6 and Eagle Ridge Drive, 110 m. northwest of Kinney Run Trail, 3.17 km. south of the GNIS location of Golden. Tom Schweich 2044.2 2 Jun 2019. ( KHD ) .

- South Table Mountain, South Table Mountain, on mesatop along road to Castle Rock. 13E 0482045E 4400489N. Loraine Yeatts 489. 16 May 1983. ( KHD20702 ) E facing dry slope, relativel common S Table Mt. Mary E. Edwards 420. 1 Jun 1983. ( COLO00306910 CS21503 ) . .

Euphorbia dentata Michx.  (Syn: Euphorbia dentata Michx. var. dentata , Pointsettia dentata (Michx.) Klotzsch & Garcke ) Toothed Spurge. CalPhotos. Jepson eFlora. SEINet Taxon.

- Heritage Square, ca 2 1/2 mi S of Golden. T R70W S10. Ernest H. Brunquist 20. 17 Aug 1959. ( CS23954 ) ca 2 1/2 mi S of Golden. T R70W S10. Ernest H. Brunquist 29. 20 Aug 1959. ( CS23915 ) .

- South Table Mountain, A lava capped mesa in the Denver Formation, disturbed area by road. South Table Mountain Road end of Quaker Street. 13N 0484211E 4399040N. Janet L. Wingate 2718. 30 Aug 1983. ( KHD19611 ) A lava capped mesa in the Denver Formation, patches of several plants. South Table Mountain, along edge of Quaker Road. 13N 0484211E 4400468N. Loraine Yeatts 814. 29 Aug 1983. ( COLO00306324 KHD20860 ) . .

Euphorbia esula L.  Leafy Spurge. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.

- Clear Creek Canyon Park, Colonizing a former quarry road, southeast-facing side of the canyon, just inside the mouth of Clear Creek Canyon, foothills of Rocky Mountain Front Range, 2.16 km west of the GNIS location of Golden. Tom Schweich 1795. 27 Apr 2018. ( CAS EIU JCOS s.n. UC UCR ) .

- Mount Falcon Park, USA, Colorado, Jefferson County, Morrison, along the trail at Mount Falcon Park. J. Reseigh 18. 2 Jun 2000. ( CS80214 ) .

- North Table Mountain Park, Tom Schweich 7/13/2016. Colorado Noxious Weed List B. Northwest section of North Table Mountain, on a lobe of the mountain that is formed by the lowest lava flow embedded within the Denver Formation, 3.25 km. north of the GNIS location of Golden. Tom Schweich 1657. 5 Jun 2017. ( CDA CS JCOS s.n. KHD00065397 ) Western slope of North Table Mountain, just below a break in slope formed by the lowest basalt flow embedded in the Denver Formation, 3.1 km. north of the GNIS location of Golden. Tom Schweich 1733. 15 Aug 2017. ( COLO02347987 EIU JCOS s.n. ) .

- South Table Mountain, A lava capped mesa in the Denver Formation, S facing slope. One plant. South Table Mountain, Front Range. Along road in 1st gully W of Quaker Road. 13N 0484816E 4398812N. Loraine Yeatts 1411. 18 May 1987. ( KHD25146 ) A lava capped mesa in the Denver formation; grassy meadow on gentle slope; with Artemisia ludoviciana, Ambrosia psilostachya var. coronipifolia, Melilotus alba, immature chenopod. Front Range, S. Table Mt., along old road ca ¼ mi. S. of main road to Castle Rock. UTM: 83850E 99700N. Loraine Yeatts 3091. 10 Aug 1991. ( COLO00307744 ) .

- Tucker Gulch (lower), Weed: CO DofA, List: B. Disturbed area between paths, 1.33 km north northwest of the GNIS location of Golden Tom Schweich 1331. 11 May 2016. ( CAS CDA KHD00063910 OBI83164 UC UCR277951 ) . .

Euphorbia marginata Pursh.  (Syn: Agaloma marginata (Pursh) A. Löve & D. Löve ) Snow on the Mountain. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, United States of America, Colorado, Golden N. L. Britton 8 Oct 1882. ( NY4009922 ) .

- Heritage Square, Ernest H. Brunquist 6. 14 Aug 1959. ( CS23945 KHD11169 ) .

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 as Agaloma marginata Zeise, Larry Steven, 1976 Disturbed roadside trail. At base of North Table Mountain, S side of mountain. 13N 0481016E 4401793N. Stanley Smookler 159. 2 Jul 1998. ( KHD32239 ) .

- South Table Mountain, Along edge of road, occasional, in gravel. South Table Mountain, along edge of Castle Rock road. 13N 0482476E 4400373N. Loraine Yeatts 746. 27 Jul 1983. ( COLO00302703 KHD20862 ) . .

Euphorbia myrsinites L.  (Syn: Tithymalus myrsinites (L.) Hill ) Myrtle Spurge. Weed: CO DofA, List: A. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, Tom Schweich 5/6/2020. .

- Colorado School of Mines Survey Field, Fairly large patch on lower slopes of Lookout Mountain; already gone to seed. Tom Schweich 7/6/2016. 8-9 small plants Tom Schweich 4/7/2020. Tom Schweich 4/23/2018. .

- Golden, At junction of Highway 6 and 19th Street, Golden. 13N 0480917E 4399327N. Janet L. Wingate 2298. 25 Apr 1983. ( KHD13381 ) A lava capped mesa in the Denver Formation, population of a colony of plants stable for several years has begun uphill. At base of South Table Mountain, near 16th Street. 13N 0481721E 4400321N. Stanley Smookler 53. 20 Apr 1993. ( COLO00307348 KHD30495 ) Inside and outside of fence. Tom Schweich 3/22/2017. Tom Schweich 3/22/2017. Tom Schweich 4/3/2017. .

- Kinney Run, West-facing slope, just beginning to bloom, collection from southern edge of an infestation that extends 175 m. north along the rock outcrop. 3.31 km. south of the GNIS location of Golden. Tom Schweich 1779. 12 Apr 2018. ( CDA COLO02347995 EIU KHD00069143 ) .

- Mount Zion, 100-200 plants growing in an area about 100 ft by 500 ft, growing in dese clumps in loose gravelly, often barren soil on a dry hillside. On Old Chimney Gulch Trail crossing E slope of Mount Zion (near Golden), between lower Lariat Loop Trail and Windy Gap, site of Beaver Brook Trailhead. 13N 0479704E 4399064N. Stanley Smookler 11 Apr 1998. ( KHD32097 ) .

- North Table Mountain, Tom Schweich 3/16/2017. .

- North Table Mountain Park, Rooted in very thin soil, or in cracks of basalt flow capping the mesa. Colorado Noxious Weed List A. Top of mesa, near southwest edge, 1.55 km north of the GNIS location of Golden. Tom Schweich 1323. 4 May 2016. ( CAS CDA CS JCOS s.n. KHD00063932 OBI83163 UC UCR277965 ) .

- North Washington Open Space, Few plants in disturbed area. Tom Schweich 3/4/2018. In mowed area of smooth brome. Northeast corner of parcels, in an area of much smooth brome that has been mowed by neighbors to the north. Tom Schweich 1745. 31 Aug 2017. ( JCOS s.n. KHD00065356 ) .

- Tin Cup Ridge, Tom Schweich 3/20/2017. . .

Euphorbia peplus L.  (Syn: Tithymalus peplus (L.) Hill ) Petty Spurge. CalPhotos. Jepson eFlora. SEINet Taxon.

- Golden, Weed in gardens and waste areas. Golden. G. K. Arp 1298. 18 Jul 1970. ( COLO00307363 ) . [ Snow (2009), [WJ - Collected once in CO in Golden. L. Yeatts has collected Golden area for 30 years and never encountered it. Probably a non-persistent waif] ]

- Kinney Run, Accidental collection of 1 plant with Coll. No. 1827. Tom Schweich 5/16/2018. . .

Euphorbia spathulata Lam.  (Syn: Tithymalus spathulata (Lam.) W. A. Weber ) Warty Spurge, Spoonleaf Spurge. CalPhotos. Jepson eFlora. SEINet Taxon.

Annual, tap-rooted, to 25 cm., glabrous throughout; Leaves, cauline alternate, 26 mm. × 9 mm. wide, spatulate, toothed; Inflorescence, umbellate, flower a cyathium; Capsules, 2.5 mm. × 2.8 mm. wide, warty-tuberculate. Not listed as a noxious weed. (Described from Coll. No. 1388, 1 June 2016.)

- North Table Mountain, Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Not listed as a noxious weed. Northwest side of North Table Mountain, southwest-facing slope above canyon, about 75 m. west of the underground water tank and 160 m. west of the Mesa Top Trail, 3.5 km north of the GNIS location of Golden. Tom Schweich 1388. 1 Jun 2016. ( JCOS s.n. KHD00063957 UC UCR277979 ) .

- South Table Mountain, South Table Mountain, below Castle Rock. 13N 0482071E 4400182N. Loraine Yeatts 1194. 13 May 1985. ( COLO00307405 KHD21726 ) . .

Tragia ramosa Torr.  Branched Noseburn. CalPhotos. Jepson eFlora. SEINet Taxon.

- Apex Park - Northern Parcel, In fruit. Tom Schweich 8/19/2020. .

- Golden, Dry prairies. Golden Delzie Demaree 29480. 23 Jul 1950. ( COLO 00307876 ) .

- North Table Mountain, as T. nepesaefolia orth. var. ?, misapplied. Zeise, Larry Steven, 1976 as T. urticifolia, misapplied. Kilburn, Paul D., and Sally L. White, 1992 .

- North Table Mountain Park, Growing among loose rocks at base of rim. Just below the southwest rim of North Table Mountain, 1.75 Km north of the GNIS location of Golden. Tom Schweich 1277. 30 Jul 2015. ( JCOS s.n. KHD00061515 ) .

- South Table Mountain, A lava capped mesa in the Denver Formation, dry S facing slope. South Table Mountain. 13N 0484293E 4399631N. Janet L. Wingate 2531. 12 Jul 1983. ( COLO00307884 KHD19315 ) [ COLO402562 is determined Tragia ramosa Torr., whereas KHD19315 is determined T. urticifolia Michx. ] Weedy inconspicuous plants to 1 high with bristly foilage covered with stinging hairs On S facing slope below mesa edge. USA, Colorado, Jefferson County, South Table Moutain, just W of Quaker Road. Loraine Yeatts 602. 27 Jun 1983. ( KHD20700 ) Dry soil. S Table Mt. Above Jefferson Co. Open Space land on mesa rim. Mary E. Edwards 502. 17 Jul 1983. ( CS79426 CS81501 CS81502 ) .

Fabaceae

Amorpha fruticosa L.  False Indigo. CalPhotos. Jepson eFlora. SEINet Taxon.

Woody perennial shrub, 1.5-2 m., erect; Stem, pubescent, hairs, simple, basifixed; Leaves, alternate, compound, stipules, free, 3 mm., petiole, 15 mm., leaflets, #13-15, 25-32 mm. × 9-16 mm. wide, elliptic-ovate, mid-rib extended as a short slender mucro, eglandular, short soft hairy, sparse adaxially, less sparse abaxially; Inflorescence, raceme, 60 mm. × 18 mm. wide, many flowers, pedicels, 1.5 mm.; Calyx, tube 2.5 mm. + lobes 0.7 mm., increasingly pubescent distally, few gland-dotted distally; Flowers, zygomorphic, banner, 4-6 mm., purple, not reflexed, back, glabrous, wings, absent, keel, absent; Fruit, unknown (immature). (Described from Coll. No. 1464, 27 June 2016, and Coll. No. 1940, 14 June 2018).

- Ranson/Edwards Homestead Open Space Park, Xeric mountain foothills with alluvial water flow. Associated Species: Crataegus erythropoda, Prunus virginiana, Bouteloua hirsute, Symphoricarpos rotundifolius, Prunus americana. United States, Colorado, Jefferson, 1 mile north on Plainvierw Road, north of Hwy 72 and Golden, CO and 1 1.2 miles west of Hwy 93. Boulder City Open Space and Mountain Parks land along the Coal Creek creek bed. Denise Wilson 7 Oct 2011. ( CHIC16921 ) Habitat: High plains seasonally dry creek bed. Associated Species: Populus deltoides, Salix sp., Symphoricarpos occidentalis, Prunus virginiana, Hypericum perforatium, Rhus trilobata, Rosa woodsii, Elymus canadensis, Heterotheca villosa, Artemisia frigida, A. campestris United States, Colorado, Jefferson, Take Hwy 93 north 8 miles from Golden, CO, take Hwy 72 west for 1.7 miles to Plainview Rd; turn right (north) cross bridge, drive 1 mile and park. Plants are in the Coal Creek dry creek bed to the east. Denise Wilson 24 Nov 2012. ( CHIC17891 ) Lining a small ephemeral stream. Tom Schweich 7/24/2016. Growing in roadside ditch. Tom Schweich 9/8/2016. In dense vegetation of mostly willows on the edge of an abandoned channel of Coal Creek. Flood plain of Coal Creek, 1.6 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. generally north on Plainview Road, then 350 m. generally east on an old road leading to Coal Creek; 14.7 km. north northwest of the GNIS location of Golden. Tom Schweich 1464. 27 Jun 2016. ( CAS EIU022394 JCOS s.n. KHD00063619 OBI83327 ) Shrubs growing on bank of small ephemeral stream that was flowing at the time of this collection. High plains above Rocky Flats, 1.7 mi. west on CO Highway 72 Coal Creek Canyon Road from CO Highway 93, 1.0 mi. generally north on Plainview Road, then 260 m. east, 14.90 km. north northwest of the GNIS location of Golden. Tom Schweich 1940. 14 Jun 2018. ( COLO02348209 CS UC ) . .

Amorpha nana Nutt.  Dwarf False Indigo. CalPhotos. Jepson eFlora. SEINet Taxon.

- Ranson/Edwards Homestead Open Space Park, Habitat: In a recent burn area. Locally common. USA, Colorado, Jefferson County, Ranson/Edwards, JEFCO open space property. N. of gravel road as it curves W and uphill. Verbatim Coordinates: NAD83 13 0476478E 4416476N, Eldorado Springs quad T2S R70W SEC7. D. Hazlett, Pam Smith, and Rich Scully 13965. 15 Sep 2011. ( KHD52809 ) Tom Schweich 8/27/2019. Several plants. Tom Schweich 9/8/2016. Tom Schweich 9/8/2016. Northern part of open space, 1.6 mi. west on CO Highway 72 from CO Highway 93, north 1.9 mi. on Plainview Road, then 180 m. northwest; 16.3 km. north northwest of the GNIS location of Golden. Tom Schweich 1513. 24 Jul 2016. ( JCOS s.n. KHD00063626 ) . .

Astragalus Milkvetch. CalPhotos. Jepson eFlora. SEINet Taxon.

- North Table Mountain, Zeise, Larry Steven, 1976 .

- North Washington Open Space, Purple flower, no fruit, leaves basal, silvery hairy. Tom Schweich 5/2/2017. . .