Eastern Mojave Vegetation Field Notes (Continued)  
 

Tom Schweich  

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 When I first read the field notes of Annie Alexander and Louise Kellogg, I was fascinated by the descriptions they wrote about the places they went and the plants and animals they found there. By publishing my field notes on the Internet I hope to follow a little bit in their tradition.

 

   

August, 2017

 

 

   

Tuesday, August 15th

 

Locations: North Table Mountain Park.  

North Table Mountain, northwest side, off trail.

Full Size ImageColl. No. 1732, Solidago missouriensis  
1732  Field identification: Solidago, probably S. missouriensis.

Solidago missouriensis Nutt. Missouri Goldenrod.

North Table Mountain Park, Jefferson County, Colorado. 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. 39.7834N, 105.2295W. WGS 1984 Elev. 1835 m. With Bromus inermis, Andropogon gerardii, Liatris punctata in bud, Linum lewisii in seed.


Full Size ImageColl. No. 1733, Euphorbia esula  
1733  Field identification: Euphorbia, past flowering, probably E. esula.

Euphorbia esula L. Leafy Spurge.

North Table Mountain Park, Jefferson County, Colorado. 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. 39.7833N, 105.2273W. WGS 1984 Elev. 1883 m.


Full Size ImageColl. No. 1734, Woodsia oregana ssp. cathcartiana  
1734  Field identification: Fern, maybe Woodsia oregana.

Woodsia oregana D.C. Eaton ssp. cathcartiana (B.L. Rob.) Windham. Rocky Mountain Woodsia.

North Table Mountain Park, Jefferson County, Colorado. 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. 39.7833N, 105.2272W. WGS 1984 Elev. 1889 m.


Full Size ImageColl. No. 1735, Schizachyrium scoparium  
1735  Field identification: Grass, maybe Schizachyrium scoparium.

Schizachyrium scoparium (Michx.) Nash. Little Bluestem.

North Table Mountain Park, Jefferson County, Colorado. About half way up the western slope of North Table Mountain, in rim rocks of oldest basalt flow embedded in the Denver Formation, 3.1 km. north of the GNIS location of Golden. 39.7833N, 105.2269W. WGS 1984 Elev. 1905 m. Plants smaller than those typically seen.


Full Size ImageColl. No. 1736, Liatris punctata  
1736  Field identification: Liatris punctata.

Liatris punctata Hook. Dotted Blazing Star.

North Table Mountain Park, Jefferson County, Colorado. 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. 39.7832N, 105.2257W. WGS 1984 Elev. 1916 m. Grassy gentle slope, this plant is an early bloomer among its species here.

  1737  Field identification: Grindelia squarrosa.

Grindelia squarrosa (Pursh) Dunal. Curlycup Gumweed.

North Table Mountain Park, Jefferson County, Colorado. 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. 39.7831N, 105.2253W. WGS 1984 Elev. 1923 m. Gentle grassy slope above oldest lava flow.


Full Size ImageColl. No. 1738, Acer glabrum  
1738  Field identification: Rocky Mountain Maple, Acer glabrum.

Acer glabrum Torr. Rocky Mountain Maple.

North Table Mountain Park, Jefferson County, Colorado. Northwest side of North Table Mountain, in a small gulch just below the rim of the mesa formed by the highest lava flow in the Denver Formation. 39.7824N, 105.222W. WGS 1984 Elev. 1954 m. One of several quintessential Jefferson County taxa, as the type was collected in Platte Canyon by Dr. Edwin James of the Major Stephen H. Long expedition of 1820.


Full Size ImageColl. No. 1739, Physocarpus monogynus
Full Size ImageFruit of Coll. No. 1739, Physocarpus monogynus  
1739  Field identification: Physocarpus monogynus, in fruit.

Physocarpus monogynus (Torr.) J.M. Coult. Mountain Ninebark.

North Table Mountain Park, Jefferson County, Colorado. Northwest side of North Table Mountain, in a small gulch just below the rim of the mesa formed by the highest lava flow in the Denver Formation. 39.7822N, 105.222W. wgs 1984 Elev. 1956 m. Collected for fruit, most often of 2 follicles. One of several quintessential Jefferson County taxa, as the type was collected in Platte Canyon by Dr. Edwin James of the Major Stephen H. Long expedition of 1820.


Full Size ImageColl. No. 1740, Achnatherum robustum  
1740  Field identification: First thought was an unusual Stipae, but probably Nassella viridula.

Achnatherum robustum (Vasey) Barkworth. Sleepygrass.

North Table Mountain Park, Jefferson County, Colorado. Top of North Table Mountain, in mixed grasses near areas of bare basalt, 150 m. northwest of Lichen Peak, 2.7 km. north of the GNIS location of Golden. 39.7798N, 105.2218W. WGS 1984 Elev. 1993 m.


Full Size ImageColl. No. 1741, Aliciella pinnatifida  
1741  Field identification: Some sort of Gilia s. l.

Aliciella pinnatifida (Nutt. ex A.Gray) J.M.Porter. Sticky Gilia.

North Table Mountain Park, Jefferson County, Colorado. Top of North Table Mountain, on volcanic gravel plain near areas of bare basalt, 150 m. northwest of Lichen Peak, 2.6 km. north of the GNIS location of Golden. 39.7794N, 105.2223W. WGS 1984 Elev. 1993 m. Volcanic gravel plain, also seen on floor of basalt quarry.

  1742  Field identification: Mentzelia sp.

Mentzelia. Blazing Star.

North Table Mountain Park, Jefferson County, Colorado. Top of North Table Mountain, in basalt quary on west side, 2.1 km. north of the GNIS location of Golden. 39.7747N, 105.2232W. WGS 1984 Elev. 1980 m. On an artificial slope inside the basalt quarry.

  1743  Field identification: Bouncingbet.

Saponaria officinalis L. Bouncingbet.

North Table Mountain Park, Jefferson County, Colorado. 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. 39.7802N, 105.2281W. WGS 1984 Elev. 1871 m. Colorado Noxious Weed List B.

 

   

Wednesday, August 23rd

 

Other articles: Cheyenne Street near 4th
Full Size ImageColl. No. 1743.5, Symphyotrichum ericoides  

1743.5  Field identification: Symphyotrichum sp.

Symphyotrichum ericoides (Linnaeus) G. L. Nesom. White Heath Aster.

Golden, Jefferson County, Colorado. Edge of the yard on Cheyenne Street at 908 4th Street, 1 km northwest of the GNIS location of Golden. 39.7614N, 105.2301W. WGS 1984 Elev. 5785 ft. Native to the area, but ruderal in this location, as sometimes also observed with Ericameria nauseosa var. graveolens and Senecio spartioides.

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).

 

   

Thursday, August 31st

 

Locations: North Washington Open Space.  

North Washington Open Space.
  1744  Field identification: Bouteloua gracilis.

Bouteloua gracilis (Kunth) Lag. ex Griffiths. Blue Grama.

North Washington Open Space, Jefferson County, Colorado. Northeast corner of parcels, in an area of much smooth brome that has been mowed by neighbors to the north. 39.7688N, 105.2321W. WGS 1984 Elev. 1800 m. In bloom in mowed area.

  1745  Field identification: Euphorbia myrsinites.

Euphorbia myrsinites L. Myrtle Spurge.

North Washington Open Space, Jefferson County, Colorado. Northeast corner of parcels, in an area of much smooth brome that has been mowed by neighbors to the north. 39.7688N, 105.2321W. WGS 1984 Elev. 1804 m. In mowed area of smooth brome.

  1746  Field identification: Malva neglecta.

Malva neglecta Wallr. Common Mallow.

North Washington Open Space, Jefferson County, Colorado. 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. Northeast corner of parcels. 39.7688N, 105.2322W. WGS 1984 Elev. 1804 m. Large plant at the edge of the area mowed by neighbors.

  1747  Field identification: Liatris punctata.

Liatris punctata Hook. Dotted Blazing Star.

North Washington Open Space, Jefferson County, Colorado. 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. 39.7688N, 105.2323W. WGS 1984 Elev. 1806 m. Northeast section, in deep grasses (mostly smooth brome) and other weeds.


Full Size ImageColl. No. 1748, Ambrosia psilostachya  
1748  Field identification: Ambrosia psilostachya.

Ambrosia psilostachya DC. Western Ragweed.

North Washington Open Space, Jefferson County, Colorado. 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. 39.7689N, 105.2322W. WGS 1984 Elev. 1807 m. Northeast sector, just west of the mowed area, among smooth brome.


Full Size ImageColl. No. 1749, Lactuca serriola  
1749  Field identification: Lactuca, probably L. serriola.

Lactuca serriola L. Prickly Lettuce.

North Washington Open Space, Jefferson County, Colorado. 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. 39.7689N, 105.2322W. WGS 1984 Elev. 1809 m. Large, against neighbor's fence, maybe getting watered with neighbor's landscaping.


Full Size ImageColl. No. 1750, Chenopodium album
Full Size ImageColl. No. 1750, Chenopodium album  
1750  Field identification: Chenopodium album.

Chenopodium album L. Lambsquarters.

North Washington Open Space, Jefferson County, Colorado. 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. 39.7686N, 105.2319W. WGS 1984 Elev. 1807 m. East end of parcels, adjacent to social trail over top of hill. Var. album if infraspecific names are to be applied.

  1751  Field identification: Gutierrezia sarothrae.

Gutierrezia sarothrae (Pursh) Britton & Rusby. Broom Snakeweed.

North Washington Open Space, Jefferson County, Colorado. 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. 39.7686N, 105.2325W. WGS 1984 Elev. 1811 m. Eastern half of parcel, east slope at edge of smooth brome infestation.

Other articles: Field Notes Coll. No. 1759, 31 Aug 2017  

1752  Field identification: Solidago, maybe S. missouriensis.

Solidago missouriensis Nutt. Missouri Goldenrod.

North Washington Open Space, Jefferson County, Colorado. 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. 39.7686N, 105.2325W. WGS 1984 Eastern half of parcel, east slope at edge of smooth brome infestation.

  1753  Field identification: Artemisia ludoviciana.

Artemisia ludoviciana Nutt. Silver Wormwood.

North Washington Open Space, Jefferson County, Colorado. 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. 39.7685N, 105.2325W. WGS 1984 Elev. 1809 m. Var. ludoviciana if infraspecific names are to be applied.


Full Size ImageColl. No. 1754, Artemisia dracunculus
Full Size ImageColl. No. 1754, Artemisia dracunculus  
1754  Field identification: Artemisia dracunculus.

Artemisia dracunculus L. Tarragon, Dragon Wort.

North Washington Open Space, Jefferson County, Colorado. 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. 39.7685N, 105.2324W. WGS 1984 Elev. 1807 m. Eastern slope adjacent to social trail over the top of the hill.

  1755  Field identification: Senecio spartioides.

Senecio spartioides Torr. & A. Gray. Broomlike Ragwort.

North Washington Open Space, Jefferson County, Colorado. 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. 39.7685N, 105.2328W. WGS 1984 Elev. 1812 m. Near top of hill, in some of the least-disturbed native vegetation.

  1756  Field identification: Eriogonum effusum.

Eriogonum effusum Nutt. Spreading Buckwheat.

North Washington Open Space, Jefferson County, Colorado. 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. 39.7685N, 105.2331W. WGS 1984 Elev. 1816 m. Center of parcel, slight southwest slope. (Most of the flowers will be found in the fragment packets.)


Full Size ImageColl. No. 1757, Sporobolus cryptandrus
Full Size ImageLeaf collar of Coll. No. 1757, Sporobolus cryptandrus  
1757  Field identification: grass.

Sporobolus cryptandrus (Torr.) A. Gray. Sand Drop-seed.

North Washington Open Space, Jefferson County, Colorado. 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. 39.7686N, 105.2331W. WGS 1984 Elev. 1816 m. Top of hill, adjacent to social trail. Native to Colorado, but also commonly used in revegetation projects.

Described by Torrey from a collection by Dr. Edwin James, botanist on the Long Expedition of 1820.

Coll. No. 1757, 31 Aug 2017, characters observed: Perennial grass, to 50 cm., caespitose; Leaves, cauline, sheath, 45 mm., overlapping about ½, open, ciliate distally; ligule, hairy, 0.5 mm., collar of hairs to 3 mm., blade, 150 mm. × 3.5 mm. wide, rolled to flat; Inflorescence, open panicle, 120 mm, × 45 mm. wide, lower branches included in sheath; Spikelets, 2 mm. × 0.5 mm. wide, crowded on panicle branches, glabrous throughout; Florets, 1 per spikelet, bisexual; Glumes, #2, awns 0, lower, 0.7 mm., upper, 1.8 mm.; Lemma, 2.0 mm., veins, 1, prominent green, awns, 0; Palea, 1.9 mm.


Full Size ImageColl. No. 1758, Brickellia eupatorioides
Full Size ImageFlower head of Coll. No. 1758, Brickellia eupatorioides  
1758  Field identification: Brickellia eupatorioides.

Brickellia eupatorioides (L.) Shinners. False Boneset.

North Washington Open Space, Jefferson County, Colorado. 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. 39.7681N, 105.2336W. WGS 1984 Elev. 1802 m. On a bank that was formerly cut, unknown whether it was intentionally regevetated or not.

Other articles: Field Notes Coll. No. 1752, 31 Aug 2017
Full Size ImageColl. No. 1759, Solidago nana  

1759  Field identification: Solidago, maybe S. nana, compare to Coll. No. 1752.

Solidago nana Nutt. Baby Goldenrod.

North Washington Open Space, Jefferson County, Colorado. 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. 39.7682N, 105.2337W. WGS 1984 Elev. 1805 m. On a bank that was formerly cut, unknown whether it was intentionally regevetated or not.

  1760  Field identification: Erigeron, maybe Symphyotrichum falcatum like found at Tin Cup Ridge.

Symphyotrichum falcatum (Lindl.) G.L. Nesom. White Prairie Aster.

North Washington Open Space, Jefferson County, Colorado. 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. 39.7681N, 105.2333W. WGS 1984 Elev. 1806 m. South-central portion of parcel, but still above the most disturbed areas.

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Date and time this article was prepared: 11/21/2019 3:59:52 PM