|
Detailed Area Plant List for South Table Mountain Open Space (City of Golden), Jefferson County, United States.
Edited by Tom Schweich
This list is assembled from personal collections, herbarium vouchers, and published lists that were available at the time this list was prepared. There may be additional species of plants in this area that were unknown or undocumented at the time this list was prepared. 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 South Table Mountain Open Space (City of Golden), Jefferson County, United States.
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.
- South Table Mountain Open Space (City of Golden),
6016.
5/13/2026.
.
Apiaceae
Aletes acaulis (Torr.) J.M. Coult. & Rose. Stemless Indian Parsley. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6059.
5/13/2026.
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‡
)
.
 Apiaceae Aletes acaulis |
 Coll. No. 1925, Aletes acaulis |
 Coll. No. 1321, Aletes acaulis |
Asclepiadaceae
Asclepias pumila (A. Gray) Vail. Plains Milkweed. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6066.
5/13/2026.
upper bank of the Olivine Trail from here about 15 meters down trail (south); not seen on undisturbed slope above and below trail.
Tom Schweich 3333.
7/7/2023.
.
 Asclepias pumila growing in my parkway. |
 Asclepias pumila growing in my parkway. |
Asteraceae
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).
- South Table Mountain Open Space (City of Golden),
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‡
)
.
.
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).
- South Table Mountain Open Space (City of Golden),
6036.
5/13/2026.
.
.
 Coll. No. 1067, Artemisia frigida |
 Coll. No. 3507, Artemisia frigida. |
 Coll. No. 3625, Artemisia frigida. |
 Coll. No. 1067, Artemisia frigida |
 Coll. No. 1067, Artemisia frigida |
Artemisia ludoviciana Nutt. Silver Wormwood. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6012.
5/13/2026.
.
.
Brickellia californica (Torrey & A. Gray) A. Gray. California Brickelbush. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6061.
5/13/2026.
.
.
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.)
- South Table Mountain Open Space (City of Golden),
6037.
5/13/2026.
.
.
 Carduus nutans rosette. |
 Coll. No. 1711, Carduus nutans |
 Coll. No. 2551, Carduus nutans |
Ericameria nauseosa (Pall. ex Pursh) G. L. Nesom & G. I. Baird var. nauseosa. (Syn: Chrysothamnus plattensis Greene ) Rubber Rabbitbush. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
on the edge of the Lubahn Trail
Tom Schweich 3326.
7/7/2023.
.
.
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. See also Coll. No. 3381).
- South Table Mountain Open Space (City of Golden),
6034.
5/13/2026.
in soil pocket,
S. Table Mt.; on top of Castle Rock. 13N 0482000E 4400400N.
Peter G. Root 8311.
1 Jul 1983.
(
KHD19410‡
)
.
.
Erigeron tracyi Greene. (Syn: E. cinereus A. Gray , E. colomexicanus A. Nelson , E. 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.
- South Table Mountain Open Space (City of Golden),
6067.
5/13/2026.
.
.
Grindelia subalpina Greene. Subalpine Gumweed. CalPhotos. Jepson eFlora. SEINet Taxon.
Perennial herb, 45-60 cm.; Stem, light brown, glabrous; Leaves, cauline, alternate, sessile, blade 45 mm. × 12 mm. wide, reduced distally, oblanceolate, adaxially glandular, margins, dentate, teeth separated 3-5 mm., apiculate; Inflorescence, heads, #3-4 per stem, not overtopped by leaves, showy, gummy exudate; Involucre, 10 mm. × 13 mm. wide, globose, resinous; Phyllaries, in 5± unequal graduated series, lower << rest of involucre, upper 8 mm. × 1.3 mm. wide, resinous, margins, flat, tips, acuminate, lower coiled 360°; Pappus, few, well developed bristles, 3.5 mm, readily falling; Style, 2-branched, stigmatic portion 0.6 mm. + appendages 0.6 mm.; Cypsela, 1.6 mm. × 0.6 mm. wide, black, glabrous. (Described from Coll. No. 3530, 18 September 2025.)
- South Table Mountain Open Space (City of Golden),
6029.
5/13/2026.
.
.
 Obs. No. 4396, Grindelia subalpina. |
 Obs. No. 4392, Grindelia subalpina in DeLong Park. |
 Coll. No. 3530, Grindelia subalpina. |
Gutierrezia sarothrae (Pursh) Britton & Rusby. (Syn: G. linearifolia Lag. ) 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.)
- South Table Mountain Open Space (City of Golden),
6038.
5/13/2026.
.
.
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.
- South Table Mountain Open Space (City of Golden),
6027.
5/13/2026.
.
.
 Coll. No. 1704, Helianthus pumilus |
 Coll. No. 1426, Helianthus pumilis |
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.
- South Table Mountain Open Space (City of Golden),
6028.
5/13/2026.
.
.
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).
- South Table Mountain Open Space (City of Golden),
outside of a switchback in Lubahn Trail
Tom Schweich 3329.
7/7/2023.
.
.
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.
- South Table Mountain Open Space (City of Golden),
6033.
5/13/2026.
.
 Coll. No. 1115, Tragopogon dubius |
Berberidaceae
Berberis . Barberry. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden), 6047. 5/13/2026. .
Boraginaceae
Oreocarya virgata (Porter) Greene. (Syn: Cryptantha virgata (Porter) Payson ) Miner"s Candle. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden), 6060. 5/13/2026. . .
Phacelia hastata Douglas ex Lehm. Silverleaf Phacelia. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6050.
5/13/2026.
6053.
5/13/2026.
.
 Coll. No. 2081, Phacelia heterophylla |
 Coll. No. 3494, Phacelia hastata. |
Brassicaceae
Alyssum simplex Rudolphi. (Syn: A. campestre (L.) L. var. simplex (Rudolphi) Willd. , A. minus Rothm. , A. 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).
- South Table Mountain Open Space (City of Golden),
6007.
5/13/2026.
.
.
 Alyssum simplex |
 Alyssum simplex |
 Fruit of Coll. No. 1090, Alyssum simplex |
 Coll. No. 1090, Alyssum simplex |
 Coll. No. 1367, Alyssum simplex |
Descurainia incisa (Engelm.) Britton ssp. incisa. (Syn: D. incisa (Engelm.) Britton ssp. viscosa Rydb.) G. Mulligan ) Mountain Tansymustard. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6013.
5/13/2026.
.
.
 Coll. No. 2464, Descurainia incisa ssp. incisa |
 Coll. No. 3347, Descurainia incisa ssp. incisa. |
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).
- South Table Mountain Open Space (City of Golden),
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‡
)
.
.
Physaria vitulifera Rydb. Bull. Torrey Bot. Club 28: 278. 1901. (Syn: P. vitulifera × bellii ) 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.
- South Table Mountain Open Space (City of Golden),
6039.
5/13/2026.
6051.
5/13/2026.
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‡
)
crack in rock beside Lubahn Trail
Tom Schweich 3327.
7/7/2023.
several large plants in recently placed boulders
Tom Schweich 3328.
7/7/2023.
.
.
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.
- South Table Mountain Open Space (City of Golden),
6014.
5/13/2026.
.
.
 Coll. No. 1845, Sisymbrium altissimim |
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).
- South Table Mountain Open Space (City of Golden),
In damp South facing gully under Willow tree.
South Table Mountain. 13N 0482039E 4400470N.
Loraine Yeatts 481.
16 May 1983.
(
COLO00208231‡
KHD19691‡
)
.
 Brassicaceae Thlaspi arvense |
 Habitat of Coll. No. 1365, Thlaspi arvense |
 Coll. No. 1365, Thlaspi arvense |
 Coarsely dentate leaves of Coll. No. 1820, Thlaspi arvense |
Cactaceae
Cylindropuntia imbricata (Haw.) F. M. Kunth. Tree Cholla. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6018.
5/13/2026.
.
.
 Obs. No. 4312, Cylindropuntia imbricata. |
Opuntia macrorhiza Engelm. Western 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.)
- South Table Mountain Open Space (City of Golden),
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.
]
.
 Coll. No. 2371, Opuntia macrorhiza |
 Opuntia macrorhiza on Schweich Hill. |
 Obs. No. 1540, Opuntia macrorhiza |
 Coll. No. 1948, Opuntia macrorhiza |
Opuntia polyacantha Haw. Plains Pricklypear. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6006.
5/13/2026.
6057.
5/13/2026.
.
Campanulaceae
Campanula rotundifolia L. (=Campanula petiolata A. DC.) 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.
- South Table Mountain Open Space (City of Golden),
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‡
)
.
 Coll. No. 2151, Campanula rotundifolia |
 Coll. No. 1246, Campanula rotundifolia |
Cannabaceae
Celtis reticulata Torr. (Syn: Celtis laevigata Willd. var. reticulata L. D. Benson ) Net-Leaved Hackberry. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6015.
5/13/2026.
.
Caprifoliaceae
Symphoricarpos Duhamel. Snowberry. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden), 6020. 5/13/2026. . .
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.
- South Table Mountain Open Space (City of Golden),
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‡
)
.
Chenopodiaceae
Atriplex canescens (Pursh) Nutt. Four-wing Saltbush. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6023.
5/13/2026.
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‡
)
.
 Coll. No. 3518, Atriplex canescens. |
 Coll. No. 3369, Atriplex canescens. |
 Detail of Coll. No. 721, Atriplex canescens var. canescens |
Euphorbiaceae
Chamaesyce glyptosperma (Engelm.) Small. (=Euphorbia glyptosperma Engelm.) Ribseed Sand Mat. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
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‡
)
.
.
 KHD63968 voucher of Coll. No. 1550.5, Chamaesyce glyptosperma. |
Euphorbia brachycera Engelm. (Syn: Tithymalus brachyceras (Engelm.) Small ) Horned Spurge. CalPhotos. Jepson eFlora. SEINet Taxon.
Perennial, to 25-30 cm., glabrous throughout; Stem, erect, herbaceous; Leaves, alternate, sessile, lanceolate, 16 mm. × 8 mm. wide, margin entire, tip acute, green throughout; Flowers, arranged in a cyathium, glands entire with “horns” on either side. (Described from Coll. No. 2485, 2 June 2021.)
- South Table Mountain Open Space (City of Golden),
South Table Mountain, on mesatop along road to Castle Rock. 13E 0482045E 4400489N.
Loraine Yeatts 489.
16 May 1983.
(
KHD20702‡
)
.
.
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.)
- South Table Mountain Open Space (City of Golden),
South Table Mountain, below Castle Rock. 13N 0482071E 4400182N.
Loraine Yeatts 1194.
13 May 1985.
(
COLO00307405‡
KHD21726‡
)
.
.
 Inflorescence of Coll. No. 1388, Euphorbia spathulata |
 Coll. No. 1388, Euphorbia spathulata |
Tragia ramosa Torr. Branched Noseburn. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden), 6003. 5/13/2026. .
Fabaceae
Oxytropis sericea Nutt. ex Torr. & A. Gray. White Locoweed. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
Sandy soil, occasional.
Front Range, Golden, South Table Mountain, just East of Castle Rock summit. 13N 0482075E 4400443N.
Stanley Smookler 58.
16 Jun 1993.
(
KHD30086‡
)
.
.
 Coll. No. 2576, Oxytropis sericea |
Pediomelum tenuiflorum (Pursh) A. N. Egan. (Syn: Psoralea tenuiflora Pursh , Psoralidium tenuiflorum (Pursh) Rydb. ) Slimflower Scurfpea. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6010.
5/13/2026.
.
.
 Pediomelum tenuiflorum |
 Pediomelum tenuiflorum |
Vicia L. Vetch. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden), 6043. 5/13/2026. . .
Vicia villosa Roth. Hairy Vetch. CalPhotos. Jepson eFlora. SEINet Taxon.
Perennial, herb, sprawling through the smooth brome, to 50 cm.; Leaves, compound, stipules, 13 mm. × 3 mm. wide, 2-lobed, petiole, 0, blade, 75 mm. × 28 mm. wide, leaflets, #13-15, 20 mm. × 4 mm. wide, linear-elliptic, terminal leaflet a tendril, forked, #3-4, hairs, straight; Inflorescence, raceme, secund, flowers, #±20; Calyx, tube 3 mm. + lobes 4 mm., narrow, hairs simple; Flower, zygomorphic, white to dark blue, banner, 16 mm., reflexed ¾, wings, 14 mm., clawed, dark blue, keel, 11 mm., tip obtuse; Style, ring of hairs below stigma, 0.6 mm.; Fruit, (immature) 5 mm. × 0.8 mm wide, lanceolate, glabrous. (Described from Coll. No. 1875, 24 May 2018.)
- South Table Mountain Open Space (City of Golden),
In fine, sandy soil of dry open field.
Front Range, Golden, South Table Mt., W. side of S. Table Mt. at base near 18th St. trailhead. 13N 0481976E 4400382N.
Stanley Smookler 59.
16 Jun 1993.
(
KHD30051‡
)
.
 Coll. No. 1875, Vicia villosa |
Fumariaceae
Corydalis aurea Willd. Scrambled Eggs. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
A lava capped mesa in the Denver Formation, near bottom of SW facing steep, boulder covered slope, under Hackberry and Mountain Mahogany, only a few plants seen.
South Table Mountain, below Castle Rock. 13N 0482052E 4400328N.
Stanley Smookler 1192.
7 May 1985.
(
KHD21741‡
)
.
Geraniaceae
Erodium cicutarium (L.) L'Her. ex Aiton. Hemlock-leav'd Crane's-bill. Weed: CO DofA, List: C. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6009.
5/13/2026.
.
 Coll. No. 349, Erodium cicutarium |
 Coll. No. 1790, Erodium cicutarium |
 Coll. No. 2063.3, Erodium cicutarium |
 Coll. No. 2063.3, Erodium cicutarium |
 Coll. No. 2063.3, Erodium cicutarium |
Grossulariaceae
Ribes aureum Pursh. Golden Currant. CalPhotos. Jepson eFlora. SEINet Taxon.
Coll. No. 1319, 4 May 2016: Perennial shrub, to 1 m.; Stem, unarmed; Leaves, fascicled, broadly ovate, 29 mm. × 22 mm. wide, lobes 3, obtuse; Hypanthium, 9 mm., bright yellow; Sepals, petaloid, 5 mm.; Petals, 2.5 mm.; Ovary, 2 mm.
- South Table Mountain Open Space (City of Golden),
6049.
5/13/2026.
.
.
 Habitat of Coll. No. 1834, Ribes aureum. |
 Grossulariaceae Ribes aureum |
 Grossulariaceae Ribes aureum |
 Ribes aureum in winter. |
 Twigs of Ribes aureum in winter. |
 Coll. No. 1834, Ribes aureum. |
Ribes cereum Douglas. Wax Currant. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6035.
5/13/2026.
.
 Developing fruit on Ribes cereum. |
 Coll. No. 1091, Rubus deliciosus |
 Coll. No. 1092, Ribes cereum |
Lamiaceae
Marrubium vulgare L. Horehound. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden), 6004. 5/13/2026. 6017. 5/13/2026. .
Linaceae
Linum lewisii Pursh. (Syn: Adenolinum lewisii (Pursh) A. Löve & D. Löve ) Prairie Blue Flax. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6032.
5/13/2026.
.
 Coll. No. 3119, Linum perenne. |
 Coll. No. 823, Linum lewisii |
 Coll. No. 1383, Linum perenne |
 Inflorescence of Coll. No. 1951, Linum lewisii |
Malvaceae
Sphaeralcea coccinea (Nutt.) Rydb. Cowboy's Delight. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6005.
5/13/2026.
.
 Sphaeralcea coccinea (Nutt.) Rydb. On the lowest slopes of North Table Mountain. |
 Coll. No. 1423, Sphaeralcea coccinea |
Papaveraceae
Argemone polyanthemos (Fedde) G.B. Ownbey. Crested Prickly Poppy. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6042.
5/13/2026.
.
Plantaginaceae
Linaria dalmatica (L.) Mill. (Syn: Linaria dalmatica (L.) Mill. ssp. dalmatica , Linaria genistifolia (L.) Mill. ssp. dalmatica (L.) Maire & Petitm. ) Dalmatian ToadFlax. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6008.
5/13/2026.
.
.
Penstemon virens Pennell ex Rydb. Front Range Beardtongue. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6055.
5/13/2026.
.
Polygonaceae
Eriogonum effusum Nuttall, Proc. Acad. Nat. Sci. Philadelphia. 4: 15. 1848. Spreading Buckwheat. CalPhotos. Jepson eFlora. SEINet Taxon.
Perennial herb, woody at base, to 30 cm., Stem, floccose; Leaves, cauline, petiole 5 mm. + blade 20-25 mm. × 2-6 mm. wide, generally tomentose, except less so adaxially, ±flat, margin entire, , withered at flowering; Inflorescence, open cyme; Involucre, 1 per node, 2 mm., tomentose; Perianth, without stipe; Tepals, 1.8 mm., white to pink, described as yellow in Ackerfield (2015) and FNAMN; Achene, unknown. (Described from Coll. No. 1507.1, 22 Jul 2016, Coll. Nos. 1537 & 1541, 18 Aug 2016.)
- South Table Mountain Open Space (City of Golden),
6044.
5/13/2026.
.
.
Eriogonum umbellatum Torr. var. umbellatum. Sulphur-Flower Buckwheat. CalPhotos. Jepson eFlora. SEINet Taxon.
Type collected “near the Rocky Mountains” by Edwin James, 1820. Described by Torrey in 1827.
- South Table Mountain Open Space (City of Golden),
6040.
5/13/2026.
6056.
5/13/2026.
.
.
Rumex crispus L. Curley Dock. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6019.
5/13/2026.
.
 Coll. No. 2817, Rumex crispus |
 Coll. No. 818, Rumex crispus |
Ranunculaceae
Clematis ligusticifolia Nutt. Western White Clematis. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6054.
5/13/2026.
.
 Western White Clematis (Clematis ligusticifolia) on the fence and Louisiana sagewort (Artemisia ludoviciana) beside the trail. |
 Coll. No. 1970, Clematis ligustifolia |
Rosaceae
Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem. Saskatoon Serviceberry. CalPhotos. Jepson eFlora. SEINet Taxon.
Shrub, to 1 m.; Stems, branches unarmed; Leaves, simple, petiole, 8 mm., blade, 22-32 mm. × 19-32 mm. wide, veins, pinnate, surface, sparsely hairy above, sparsely to moderately hairy below, margin, serrate; Flowers, borne singly, pedicels, 10 mm., petals 9 mm. × 4.5 mm. wide, color cream; Ovary, inferior, tip hairy; Styles, #(4)5 (Described from Coll. No. 1800-1801, 7 May 2018)
- South Table Mountain Open Space (City of Golden),
6041.
5/13/2026.
6048.
5/13/2026.
.
.
Cercocarpus montanus Raf. Alder-Leaf Mountain Mahogany. CalPhotos. Jepson eFlora. SEINet Taxon.
Described by Rafinesque from a specimen collected by Edwin James of the Long Expedition, 1820, probably in present Jefferson County, Colorado. Rafinesque was somewhat frustrated by Torrey's reluctance publish a new species name in assigning James' collection to C. fothergillides Humb. Bonpl. And Kunth.
- South Table Mountain Open Space (City of Golden),
6030.
5/13/2026.
6058.
5/13/2026.
.
.
Prunus americana Marshall. American Plum. CalPhotos. Jepson eFlora. SEINet Taxon.
Perennial woody shrub, spreading, to 2 m., blooming before leafing out; Branches, unarmed, glabrous when young, peeling to brown; Leaves, (immature, at time of flowering), simple, 15-19 mm. × 5.5-8 mm. wide, lanceolate or elliptic-rhomboid, pinnately veined, glabrous, margin toothed, teeth eglandular, base slightly hairy, petiole 3 mm., adaxially hairy; Flowers, in small groups of 2-3; Pedicels, 9-18 mm., glabrous to sparsely hairy; Hypanthium, 2 mm.; Sepals, 2.5-2.8 mm., reflexed, few cobwebby hairs adaxially; Petals, free, white, 5-7 mm. × 2.5-4.5 mm. wide; Stamens, many (30?); Ovary superior; Styles #1, 10 mm.; Fruit unknown (Described from Coll. No. 1093, 30 Apr 2015, and Coll. No. 1819, 16 May 2018).
- South Table Mountain Open Space (City of Golden),
6002.
5/13/2026.
.
.
Prunus virginiana L. Chokecherry. CalPhotos. Jepson eFlora. SEINet Taxon.
The most useful distinction is between chokecherries found east of the Rocky Mountains, var. virginiana and those found from the mountains westward, var. demissa. Plants of the High Plains show intergradation between those of the Rockies and those of the East.
- South Table Mountain Open Space (City of Golden),
6052.
5/13/2026.
.
.
Rosa woodsii Lindl. Mountain Rose. CalPhotos. Jepson eFlora. SEINet Taxon.
Prickles absent on new growth, leaflets 5-9, flowers 1-10(25).
- South Table Mountain Open Space (City of Golden),
0 prickles new growth, 9 lflts.
6022.
5/13/2026.
.
 Coll. No. 3057, Rosa woodsii |
 Coll. No. 691, Rosa woodsii var. ultramontana |
Santalaceae
Comandra umbellata (L.) Nutt. ssp. pallida (A. DC.) Piehl. (Syn: Comandra umbellata (L.) Nutt. var. pallida (A. DC.) M. E. Jones ) Pale Bastard Toadflax. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6031.
5/13/2026.
.
Sapindaceae
Acer negundo L. (Syn: Acer negundo L. var. interius (Britton) Sarg. , Negundo aceroides (L.) Moench ) Box Elder. CalPhotos. Jepson eFlora. SEINet Taxon.
Tree, ±5 m.; Branches, young, soft short hairy (var. interius); Leaves, opposite, ternately compound, leaflets 3; Pistil 1; Stigma, branches 2; Fruit, 2 winged 1-seeded samaras. (Described from Coll. No. 1102, 11 May 2015).
- South Table Mountain Open Space (City of Golden),
6011.
5/13/2026.
.
Ulmaceae
Ulmus pumila L. Siberian Elm. Weed: CO DofA, List: C. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6025.
5/13/2026.
.
 Figure 1. Composite photo of Siberian elm (Ulmus pumila L.) |
Urticaceae
Parietaria pensylvanica Willd. Pennsylvania Pellitory. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
Wet slope above Lubahn Trail under Rhus trilobata, Symphoricarpos sp., and Cercocarpus montanus.
Spring 2023 was recognized as “wetter than average.”
Along the re-routed Lubahn Trail, below the basalt rim of South Table Mountain, 1.15 km. east southeast of the GNIS location of Golden.
Tom Schweich 3046.
7 Jul 2023.
(
KHD ‡
)
wet bank on upperside of Lubahn Trail, large colony under Rhus trilobata and Symphoricarpos occidentalis.
Tom Schweich 3330.
7/7/2023.
.
Asparagaceae
Asparagus officinalis L. Asparagus. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
Isolated plant on W. facing slope.
South Table Mountain; S. of Castle Rock, a short distance above homes. 13N 0482100E 4400200N.
Peter G. Root 836.
1 Jul 1983.
(
KHD18901‡
)
.
.
 Coll. No. 1510, Asparagus officinalis |
Yucca glauca Nutt. Soapweed Yucca. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6026.
5/13/2026.
.
 Yucca glauca “Soapweed Yucca” on Dakota Ridge. |
Melanthiaceae
Toxicoscordion paniculatum (Nutt.) Rydb. (Syn: Zigadenus paniculatus (Nutt.) S. Watson , Zigadenus paniculatus (Nutt.) S. Watson ) Foothill Death Camas. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
A lava capped mesa in the Denver Formation; along trail on W. facing slope; uncommon.
South Table Mountain; S. of Castle Rock; under Mount Mahogany. 13N 0482100E 4400200N.
Loraine Yeatts 904.
6 Jun 1984.
(
KHD21102‡
)
[
Original determination: Toxicodendron venenosum.
]
.
 Likely Toxicoscordion paniculatum whose leaf tips were scorched by the Hogback Fire (2023). |
 Inflorescence of Coll. No. 2055, Toxicoscordion paniculatum |
Poaceae
Agropyron cristatum (L.) Gaertn. Crested Wheat Grass. CalPhotos. Jepson eFlora. SEINet Taxon.
- South Table Mountain Open Space (City of Golden),
6045.
5/13/2026.
.
.
Bromus japonicus Thunb. Japanese Cheat Grass. CalPhotos. Jepson eFlora. SEINet Taxon.
Coll. No. 1207, 13 Jul 2015, characters observed: Annual grass, to 40 cm.; Leaves, sheath, 60 mm. closed + 12 mm. open, pilose (but not densely so), ligule, membraneous, + some hairs, blade, hairy; Inflorescence, panicle, >leaves; Pedicel, 20 mm.; Spikelets, 1-3 per panicle branch, 22 mm. × 6 mm. wide, elliptical, drooping; Glumes, #2, <lowest floret, lower, 4.5 mm., veins 3, upper, 5.5 mm., veins 5; Rachilla, short hairy; Callus, glabrous; Florets, #12, 2-ranked, closely held hiding rachilla; Disarticulation between florets; Lemma, 8 mm. × 4 mm. wide, margin, hyaline, 0.5 mm., tip bifid, awn, #1, 5-12 mm. long, mid-spikelet awns longest, flattened at base, not twisted, attached near bifid tip. Described from Coll. No. 1207, 13 Jul 2015.
- South Table Mountain Open Space (City of Golden),
6021.
5/13/2026.
.
.
 Coll. No. 1207, Bromus japonicus |
 Coll. No. 1461, Bromus japonicus |
 Coll. No. 1207, Bromus japonicus |
 Coll. No. 1207, Bromus japonicus |
Bromus tectorum L. (Syn: B. tectorum L. var. glabratus Spenn. ) Cheat Grass. Weed: CO DofA, List: C. CalPhotos. Jepson eFlora. SEINet Taxon.
Annual grass, to 30 cm.; Leaves, Sheath, 50 mm., closed proximal ⅔, open distally, Ligule, membraneous, 1 mm.; Blade, 60 mm.; Inflorescence, open panicle, rachis and pedicels short hairy, Spikelets, 1 per node, 15 mm., laterally compressed; Glumes, 2, sparsely hairy, margins scarious, lower, 2.3 mm., veins indistinct, upper, 4.5 mm. Callus, glabrous, very short, Florets, ±6, Lemma, 6.5 mm., 0.7 from mid-vein to margin, back rounded, sparsely hairy, tip, forked, teeth 1 mm., awned from near tip, awn, 5-7 mm.; Anthers, 3, 0.4 mm. Described from Coll. No. 1112, 26 May 2015. Dimensions are small for B. tectorum, perhaps because of the early date of collection.
- South Table Mountain Open Space (City of Golden), 6046. 5/13/2026. .
| Total number of taxa: | 71 |
| Native Taxa: (serif, italic, bold) | 53 |
| Non-native Taxa: (sans-serif, italic) | 14 |
| Nativity Undetermined: (default font, italic) | 4 |
| Listed Weeds: Identified as Weed | 5 |
Notes:
† -- Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
‡ -- Southwest Environmental Information Network, SEINet. 2009-2014. http//:swbiodiversity.org/seinet/index.php. Accessed from July 2009 to September 2014.
Locations Included in This Area
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Date and time this article was prepared: 11/3/2026 12:19:58 PM.
