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Detailed Area Plant List for North 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. 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 North Table Mountain Open Space (City of Golden), Jefferson County, United States.
Pinaceae
Pinus scopulorum Lemmon. (Syn: P. ponderosa Laws. var. scopulorum Engelm. ) Rocky Mountain yellow pine. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
4217.
6/27/2025.
.
 East slope of Tarryall Mountains from Camp Site 8. |
 Coll. No. 1316, Pinus |
 Rocky Mountain yellow pine on top of North Table Mountain. |
Apiaceae
Conium maculatum L. Common Poison Hemlock. Weed: CO DofA, List: C. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
4204.
6/23/2025.
.
.
 Coll. No. 1436, Conium maculatum |
Ligusticum porteri J.M. Coult. & Rose. Porter's Licorice-Root. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial, 1 m., sunny mountain valley slope; Leaves, tripinnately compound; Leaflets, well-defined, ultimate leaf division, 2-3 mm.; Inflorescence, compound umbel; Involucral bractlets, green, few; Flowers, white; Ovary, glabrous; Stylopodium, conic, frilled; Fruit, glabrous; (Described from Coll. No. 3248, 10 June 2024, and Coll. No. 3269, 21 June 2024.)
- North Table Mountain Open Space (City of Golden),
4214.
6/27/2025.
Seen or collected narby: Ericameria nauseosa var. graveolens, Campanula rotundifolia, Prunus americana, P. virginiana, Acer glabrum, and Bromus inermis.
Along a social trail in the northern part of the North Table Mountain Open Space, beside one of the larger watercourses coming down from the top of the mesa, 2.4 km. north of the GNIS location of Golden.
Tom Schweich 3428.
23 Jun 2025.
(
CS
KHD
)
.
.
Lomatium orientale J.M. Coult. & Rose. Salt-and-Pepper. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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).
- North Table Mountain Open Space (City of Golden),
4433.
3/26/2026.
.
Asclepiadaceae
Asclepias pumila (A. Gray) Vail. Plains Milkweed. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
iNaturalist Observation 228192164.
sdymersk 3896.
7/8/2024.
.
.
 Asclepias pumila growing in my parkway. |
 Asclepias pumila growing in my parkway. |
Asclepias viridiflora Raf. Green Comet Milkweed. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
Lower southwest slopes, adjacent to trail.
Tom Schweich, with Cindy Trujillo 2157.
6/18/2021.
.
Asteraceae
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. Golden Flora.
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).
- North Table Mountain Open Space (City of Golden),
Low shrubs, forbs, and grasses, with Ligusticum porteri, Artemisia ludoviciana, Carduus nutans, Gutierrezia sarothrae, Turritis glabra, and Toxicoscordion paniculatum.
Designated a City of Golden Open Space in 2025.
Southwest slope of North Table Mountain, northern part of the open space, along a social trail, in an area of hummocky ground suggesting an ancient landslide, 2.39 km. north of the GNIS location of Golden.
Tom Schweich 3427.
23 Jun 2025.
(
UCR
)
.
.
Artemisia dracunculus L. (Syn: Oligosporus dracunculus (L.) Poljakov ssp. glaucis (Pall. ex Willd.) A. Löve & D. Löve ) Tarragon, Dragonwort. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
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
)
.
.
 Coll. No. 1754, Artemisia dracunculus |
 Coll. No. 1754, Artemisia dracunculus |
Artemisia ludoviciana Nutt. Silver Wormwood. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
4197.
6/23/2025.
.
.
 Something is parasitizing my Artemisia |
 Coll. No. 1281, Artemisia ludoviciana |
 Entire leaves of Coll. No. 1281, Artemisia ludoviciana |
Carduus nutans L. (Syn: Carduus nutans L. ssp. macrolepis (Peterman) Kazmi ) Nodding Plumeless Thistle. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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.)
- North Table Mountain Open Space (City of Golden),
4196.
6/23/2025.
4206.
6/23/2025.
.
.
 Carduus nutans rosette. |
 Coll. No. 1711, Carduus nutans |
 Coll. No. 2551, Carduus nutans |
Cirsium arvense (L.) Scop. (Syn: Breea arvensis (L.) Lessing ) Canada Thistle. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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).
- North Table Mountain Open Space (City of Golden),
4205.
6/23/2025.
.
.
 Coll. No. 1200, Cirsium arvense |
 Coll. No. 3210, Cirsium arvense. |
 Coll. No. 1512, Cirsium arvense |
 Coll. No. 2773, Cirsium arvense |
Cirsium undulatum (Nutt.) Spreng. Wavy Leaved Thistle. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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).
- North Table Mountain Open Space (City of Golden),
4215.
6/27/2025.
.
.
Ericameria nauseosa (Pall. ex Pursh) G.L.Nesom & G.I.Baird var. graveolens (Nutt.) Reveal & Schuyler. (Syn: E. n. (Pall. ex Pursh) G.L.Nesom & G.I.Baird var. glabrata (Gray) G.L. Nesom & Baird ) Goldy-Locks. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
4200.
6/23/2025.
With Artemisia ludoviciana, Carduus nutans, Heliomeris multiflora var. multiflora, Turritis glabra, Toxicoscordion paniculatum, and Bromus inermis.
This area was designated a City of Golden open space in 2025. Compare to Coll. No. 3534 of var. nauseosa which was collected about 15 meters to the south.
Along a social trail towards the north end of the North Table Mountain Open Space, in a flat area that is probably the head of an ancient landslide, 2.42 km. (geodesic) north of the GNIS location of Golden.
Tom Schweich 3535.
18 Sep 2025.
(
KHD
)
.
.
Ericameria nauseosa (Pall. ex Pursh) G. I. Nesom & G. I. Baird var. nauseosa. (Syn: Chrysothamnus plattensis Greene ) Rubber Rabbitbush. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
4199.
6/23/2025.
4213.
6/27/2025.
With Artemisia ludoviciana, Carduus nutans, Heliomeris multiflora var. multiflora, Turritis glabra, Toxicoscordion paniculatum, and Bromus inermis.
This area was designated a City of Golden open space in 2025. Compare to Coll. No. 3535 of var. graveolens which was collected about 15 meters to the north.
Along a social trail towards the north end of the North Table Mountain Open Space, in a flat area that is probably the head of an ancient landslide, 2.41 km. (geodesic) north of the GNIS location of Golden.
Tom Schweich 3534.
18 Sep 2025.
(
KHD
)
.
.
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. Golden Flora.
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.
- North Table Mountain Open Space (City of Golden),
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‡
)
.
.
Grindelia subalpina Greene. Subalpine Gumweed. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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.)
- North Table Mountain Open Space (City of Golden),
Also seen or collected here: Heterotheca villosa, Symphyotrichum porteri, Lupinus argenteus, Monarda fistulosa, Bromus inermis, and B. japonicus.
Along a social trail towards the north end of the City of Golden North Table Mountain Open Space, in a hummocky area that is probably an ancient landslide, 3.0 km. north of the GNIS location of Golden
Tom Schweich 3530.
18 Sep 2025.
(
KHD
)
.
.
 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. Golden Flora.
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.)
- North Table Mountain Open Space (City of Golden),
Low shrubs and grasses, with: Achillea millefolium, Grindelia subalpina, Heterotheca villosa, Liatris punctata, Solidago rigida var. humilis, Bromus inermis and B. japonicus.
This collection is from an old shrub, but there aren't many shrubs here. This area was designated a City of Golden open space in 2025.
On an old road that formerly went to the top of the mesa, in an area of hummocky terrain that is probably an ancient landslide, 2.37 km. (geodesic) north of the GNIS location of Golden.
Tom Schweich 3537.
18 Sep 2025.
(
OBI
)
.
.
Heliomeris multiflora Nutt. var. multiflora. Showy Golden Eye. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial herb, to 45 cm.; Stem, proximally glabrate to strigose distally; Leaves, cauline, opposite to few alternate distally, petiole, 3 mm., blade 52 mm. × 13 mm. wide, reduced distally, rhombo-lanceolate, strigose, margins, mostly entire, larger leaves barely serrulate; Inflorescence, heads, 4-10 per stem, showy, not overtopped by leaves; Peduncles, indistinct; Involucre, 5.5 mm. × 10 mm. wide, hemispheric; Phyllaries, in 2-3 ±equal series, 5.5 mm. × 1.5 mm. wide, green, veins, #3, prominent adaxially, margins, flat, tips, acute; Receptacle, paleate; Palea, 5 mm. × 0.9 mm. wide; Perianth, 2 or more whorls; Ray flowers, many, tube, 1.2 mm. + blade 7 mm. × 2.8 mm. wide, yellow, sterile; Disk flowers, many, tube 2.5 mm. + lobes 0.5 mm., yellow, bisexual; Pappus, absent; Cypsela, 1.5 mm. × 0.6 mm. wide, obconic, glabrous, light brown, beakless. Described from Coll. No. 3531 & 3533, 18 September 2025.
- North Table Mountain Open Space (City of Golden),
Also seen or collected nearby: Ericameria nauseosa vars. graveolens and nauseosa, Symphyotrichum ericoides, Symphoricarpos sp., Calochortus gunnisonii, and Nassella viridula.
Same as Coll. No. 3533.
Along a social trail towards the north end of the North Table Mountain Open Space, in a flat area that is probably the head of an ancient landslide, 2.5 km. north of the GNIS location of Golden.
Tom Schweich 3531.
18 Sep 2025.
(
COLO
)
Also seen or collected nearby: Artemisia ludoviciana, Ericameria nauseosa vars. graveolens and nauseosa, Gutierrezia sarothrae, Liatris punctata, Turritis glabra, Toxicoscordiom paniculatum, and Bromus inermis.
Same as Coll. No. 3531.
Along a social trail towards the north end of the North Table Mountain Open Space, in a hummocky area that is probably an ancient landslide, 2.42 km. north of the GNIS location of Golden
Tom Schweich 3533.
18 Sep 2025.
(
KHD
)
.
.
 Coll. No. 3533, Heliomeris multiflora var. multiflora. |
 Coll. No. 3533, Heliomeris multiflora var. multiflora. |
 Coll. No. 3533, Heliomeris multiflora var. multiflora. |
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. Golden Flora.
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.
- North Table Mountain Open Space (City of Golden),
Low shrubs, forbs, and grasses, with Grindelia subalpina, Lupinus argenteus var. argenteus, Monarda fistulosa, Carex inops var. heliophila, and Bromus japonicus.
Designated a City of Golden Open Space in 2025.
Southwest slope of North Table Mountain, northern part of the open space, along a social trail, in an area of hummocky ground suggesting an ancient landslide, 2.34 km. north of the GNIS location of Golden.
Tom Schweich 3426.
23 Jun 2025.
(
UCR
)
.
.
Liatris punctata Hook. Dotted Blazing Star. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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.
- North Table Mountain Open Space (City of Golden),
4407.
9/18/2025.
.
.
 Coll. No. 1736, Liatris punctata |
 Coll. No. 3195, Liatris punctata. |
 Inflorescence of Coll. No. 1264, Liatris punctata |
 Coll. No. 1264, Liatris punctata |
Ratibida columnifera (Nutt.) Woot. & Standl. (Syn: Rudbeckia columnifera Nutt. ) Upright Prairie Coneflower. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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.
- North Table Mountain Open Space (City of Golden),
4210.
6/23/2025.
.
.
 Coll. No. 1198, Ratibida columnifera |
 Coll. No. 1496, Ratibida columnifera |
Scorzonera laciniata L. (Syn: Podospermum laciniatum (L.) De Candolle ) Cutleaf Vipergrass. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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).
- North Table Mountain Open Space (City of Golden),
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‡
)
.
.
 Schweich collection of Scorzonera laciniata |
Senecio integerrimus Nutt. Columbia Ragwort. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
With Artemisia dracunculus, A. ludoviciana, Alysum simplex, Lupinus argenteus, Prunus virginiana and Verbascum thapsus.
This parcel was designated a City of Golden Open Space in 2025. Variety exaltatus if infraspecific names are to be applied.
Along City of Golden North Table Mountain Trail in the northern part of the open space, very windy northwest slope, 2.35 km. north of the GNIS location of Golden.
Tom Schweich 3386.
16 May 2025.
(
CAS
FLD
)
.
.
Senecio wootonii Greene. Wooton's Ragwort. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden), Golden, Foothills north of Golden, CO. 13N 0481338E 4401747N. Helen Marsh Zeiner 5610. 24 May 1919. ( KHD4279‡ ) . .
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.
- North Table Mountain Open Space (City of Golden),
Low shrubs and grasses, with: Achillea millefolium, Grindelia subalpina, Gutierrezia sarothrae, Heterotheca villosa, Liatris punctata, Bromus inermis and B. japonicus.
This area was designated a City of Golden open space in 2025.
On an old road that formerly went to the top of the mesa, in an area of hummocky terrain that is probably an ancient landslide, 2.3 km. (geodesic) north of the GNIS location of Golden.
Tom Schweich 3536.
18 Sep 2025.
(
KHD
)
.
[
This appears to be the first collection from Golden.
]
.
Symphyotrichum ericoides (Linnaeus) G. L. Nesom. (Syn: Virgulus ericoides (Linnaeus) Reveal & Keener ) White Heath Aster. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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, secund, 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).
- North Table Mountain Open Space (City of Golden),
4406.
9/18/2025.
With Heliomeris multiflora var. multiflora, Symphoricarpos sp., Monarda fistulosa, Pediomelum tenuiflorum, Calochortus gunnisonii, and Nassella viridula.
This area was designated a City of Golden Open Space in 2025.
Along a social trail towards the north end of the North Table Mountain Open Space, in a flat area that is probably the head of an ancient landslide, 2.52 km. (geodesic) north of the GNIS location of Golden.
Tom Schweich 3532.
18 Sep 2025.
(
OBI
)
.
.
 Coll. No. 3515, Symphyotrichum ericoides. |
 Secund head of Coll. No. 3527, Symphyotrichum ericoides. |
 Coll. No. 3198, Symphyotrichum ericoides. |
 Coll. No. 1743.5, Symphyotrichum ericoides |
Symphyotrichum porteri (A. Gray) G.L. Nesom. (Syn: Aster porteri A. Gray ) Smooth White Aster. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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.
- North Table Mountain Open Space (City of Golden),
4408.
9/18/2025.
With Liatris punctata, Solidago rigida var. humilis, Symphyotrichum ericoides, Monarda fistulosa, and Carex inops ssp. heliophila.
This area was designated a City of Golden open space in 2025.
Beside the City of Golden North Table Mountain Trail, in an area of hummocky terrain that is probably an ancient landslide, 2.33 km. (geodesic) north of the GNIS location of Golden.
Tom Schweich 3538.
18 Sep 2025.
(
CS
)
.
.
Taraxacum officinale F. H. Wigg. (Syn: T. laevigatum (Willd.) DC. ) Common Dandelion. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
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‡
)
.
Boraginaceae
Hydrophyllum fendleri (A. Gray) A. Heller var. fendleri. Fendler's Waterleaf. CalPhotos. Jepson eFlora. SEINet Taxon.
- North Table Mountain Open Space (City of Golden), 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‡ ) . .
Lithospermum occidentale (Mack.) Weakley, Witsell & D. Estes. (Syn: Onosmodium bejariense DC. ex A. DC. var. occidentale (Mack.) B. L. Turner , Onosmodium molle Michx. ) Western Marbleseed. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
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.
(
CDA0052289‡
JCOS s.n.
KHD00072802‡
OBI ‡
)
.
 Coll. No. 2107, Lithospermum occidentale |
 Gynobase of Lithospermum occidentale |
 Lithospermum occidentale on the west side of Green Mountain |
Brassicaceae
Physaria vitulifera Rydb. Bull. Torrey Bot. Club 28: 278. 1901. (Syn: P. vitulifera × bellii ) Roundtip Twinpod. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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.
- North Table Mountain Open Space (City of Golden),
just beginning to bloom, two open flowers
4428.
3/13/2026.
.
.
Thlaspi arvense L. Field Penny Cress. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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).
- North Table Mountain Open Space (City of Golden),
4207.
6/23/2025.
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‡
)
.
.
 Brassicaceae Thlaspi arvense |
 Habitat of Coll. No. 1365, Thlaspi arvense |
 Coll. No. 1365, Thlaspi arvense |
 Coarsely dentate leaves of Coll. No. 1820, Thlaspi arvense |
Turritis glabra L. (Syn: Arabis glabra (L.) Bernhardi ) Tower Rockcress. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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).
- North Table Mountain Open Space (City of Golden),
4198.
6/23/2025.
.
 Coll. No. 1887, Turritis glabra |
Cactaceae
Escobaria missouriensis (Sweet) D.R.Hunt. (Syn: Coryphantha missouriensis (Sweet) Britton & Rose ) Missouri Foxtail Cactus. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
Between 3 rocks on toe of landslide, lowest southwest slope.
Tom Schweich 1582.
3/14/2018.
.
.
Opuntia polyacantha Haw. Plains Pricklypear. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
4211.
6/23/2025.
.
Campanulaceae
Campanula rotundifolia L. (=Campanula petiolata A. DC.) Harebell. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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.
- North Table Mountain Open Space (City of Golden),
4203.
6/23/2025.
.
 Coll. No. 2151, Campanula rotundifolia |
 Coll. No. 1246, Campanula rotundifolia |
Caprifoliaceae
Symphoricarpos Duhamel. Snowberry. CalPhotos. Jepson eFlora. SEINet Taxon.
- North Table Mountain Open Space (City of Golden), 4405. 9/18/2025. .
Caryophyllaceae
Cerastium arvense L. ssp. strictum Gaudin. (Syn: Cerastium strictum L ) Field Chickweed. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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.
- North Table Mountain Open Space (City of Golden),
4432.
3/26/2026.
.
Elaeagnaceae
Elaeagnus angustifolia L. Russian Olive. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
iNaturalist Observation 185158400.
Tom Schweich 3463.
9/26/2023.
.
 Coll. No. 1645, Elaeagnus angustifolia |
 Coll. No. 1437, Elaeagnus angustifolia |
Euphorbiaceae
Euphorbia myrsinites L. (Syn: Tithymalus myrsinites (L.) Hill ) Myrtle Spurge. Weed: CO DofA, List: A. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
Tom Schweich 1490.
3/16/2017.
.
Fabaceae
Astragalus agrestis Douglas ex G. Don. Purple Milkvetch. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Coll. No. 1398, 8 June 2016, characters observed: Perennial herb, to 15 cm., caulescent, basifixed straight appressed hairy throughout; Leaves, cauline, alternate, stipules, 5 mm., connate opposite petiole, compound, odd-pinnate, leaflets, #13, 8 mm. × 2 mm. wide, straight hairy, tip round; Inflorescence, upright ovoid cluster; Calyx, tube 4.5 mm. + lobes 3.5 mm. = 8 mm., mix of white and black hairs; Flowers, zygomorphic, 11 mm., blue-purple; Style, 7 mm., persistent; Legume, immature, 5 mm. × 1.7 mm. wide, stipe very short (0.4 mm.?), dense long straight soft hairy (Described from Coll. No. 1398, 8 June 2016).
- North Table Mountain Open Space (City of Golden),
Trailside, in grasses, in flat area likely created by a landslide.
Southwest side of North Table Mountain, along City of Golden North Table Mountain Trail, 2.3 km. north of the GNIS location of Golden.
Tom Schweich 1398.
8 Jun 2016.
(
JCOS s.n.
KHD00063960‡
UC
UCR277983‡
)
.
.
 Astragalus agrestis |
 Coll. No. 1402, Astragalus agrestis |
 Coll. No. 2989, Astragalus agrestis. |
 Coll. No. 1398, Astragalus agrestis |
Astragalus laxmannii Jacq. var. robustior (Hook.) Barneby & S. L. Welsh. (Syn: Astragalus adsurgens Pall. ) Prairie Milkvetch. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial herb, to 40 cm., caulescent, ascending, hairs dolabriform; Leaves, cauline, stipules, free, 12 mm., compound, petiole, 5 mm., blade, 100 mm., leaflets, #17-21, 17-21 mm. × 5 mm. wide, elliptic, tip cuspidate, terminal leaflet jointed to rachis; Inflorescence, raceme, dense, bracts, 9 mm., 30+ flowers, ascending, Calyx, tube 4.5-6 mm. + lobes 5 mm. = 11 mm., hairs, black and white, dolabriform; Flowers, 14 mm., pale blue-lavender to whitish, banner, 14 mm, wings, claw 6 mm. + blade 6 mm. keel, 11 mm.; Ovary, 4.5 mm. × 1.3 mm. wide, densely hairy, Legume, more erect than flower (Described from Coll. No. 1400, and 3261).
- North Table Mountain Open Space (City of Golden),
In grasses and forbs trailside.
Southwest side of North Table Mountain, along City of Golden North Table Mountain Trail, 1.9 km. north of the GNIS location of Golden.
Tom Schweich 1400.
8 Jun 2016.
(
JCOS s.n.
KHD00063961‡
OBI108942‡
)
Grassy slopes with Prinus americana and Rhus trilobata.
Southwest slopes of North Table Mountain, 2 km. north of the GNIS location of Golden.
Tom Schweich, with Greg McKittrick 1443.
22 Jun 2016.
(
CAS
UCR278004‡
)
.
.
 Coll. No. 3160, Astragalus laxmannii var. robustior. |
 Coll. No. 1400, Astragalus laxmannii var. robustior |
Lupinus argenteus Pursh var. argenteus. Loosely Flowered Silver Lupine. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Characters observed while keying: Perennial > 1 dm, stem hairs appressed, leaves cauline, petioles 4-4.5mm, calyx spurred <= 1 mm, banner back hairy, keel upper margin ciliate distal half. Most of the Lupinus argenteus in Golden are var. argenteus.
- North Table Mountain Open Space (City of Golden),
Low shrubs, forbs, and grasses, with Grindelia subalpina, Heterotheca villosa, Monarda fistulosa, Carex inops var. heliophila, and Bromus japonicus.
Southwest slope of North Table Mountain, northern part of the open space, along a social trail, in an area of hummocky ground suggesting an ancient landslide, 2.34 km. north of the GNIS location of Golden.
Tom Schweich 3423.
23 Jun 2025.
(
CS
)
.
.
Securigera varia (L.) Lassen. (Syn: Coronilla varia L. ) Purple Crownvetch. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial shrub, to 1 m. × 3 m. dia.; Leaves, cauline, alternate, stipules, 3 mm. × 0.6 mm., strap-shaped, sessile or nearly so, compound, leaflets, #21, 9 mm. × 2.7 mm. wide, oblong, tip mucronate; Inflorescence, axillary umbellate clusters, peduncles, 25 mm., Pedicels, 2.5 mm., Calyx, conical, tube 2.5 mm. + lobes 0.5 mm.; Flowers, white to pink, banner 4 mm. + 2 mm., wings, 6 mm., keel, 9 mm.; Fruit, erect, 19 mm. × 1.5 mm. wide, ridged. (Described from Coll. No. 1526, 5 August 2016.)
- North Table Mountain Open Space (City of Golden),
Introduced.
Lower slopes on the south side of North Table Mountain, 330 m. south southeast of the USBR monument designated “North Table,” 1.22 km. north northeast of the GNIS location of Golden.
Tom Schweich 1526.
5 Aug 2016.
(
COLO02347979‡
EIU
JCOS s.n.
KHD00063631‡
OBI ‡
)
.
.
 Coll. No. 3008, Securigera varia. |
 Coll. No. 1526, Securigera varia |
Vicia americana Willd. American Vetch. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial herb, to 30 cm.; Stem, not winged; Leaves, stipules, 3-4 mm. × 10-15 mm. wide, reduced above, lobed, not connate, nectary 0; cauline, compound, odd-pinnate, leaflets #6-8, + simple or 2(4)-forked tendril; Inflorescence, raceme, 4-5 flowered, pedicel 17 mm.; Flowers, zygomorphic, 14-20 mm., petals, ±white to blue distally, banner sometimes pink at point of inflection; Style, round, ring of hairs below stigma; Legume, stipe 5 mm. + body 20-32 mm. × 3-4 mm. wide + persistent style 2 mm. (Described from Coll. No. 1387, 1 June 2016, and Coll. No. 1394, 1 June 2016). Specimens with fewer flowers per raceme and forked tendrils are determined variety minor.
- North Table Mountain Open Space (City of Golden),
In grass and small shrubs below the trail.
[Variety minor if infraspecific names are to be applied.]
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 1394.
8 Jun 2016.
(
CAS
JCOS s.n.
KHD00063958‡
OBI83201‡
UCR277986‡
)
.
 Coll. No. 1394, Vicia americana |
 Coll. No. 1394, Vicia americana |
 Coll. No. 1857, Vicia americana var. minor |
Fumariaceae
Corydalis aurea Willd. Scrambled Eggs. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
Rocky open slopes above the trail. Small plants here, one larger plant in the basalt rim of the mesa.
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 1318.
22 Apr 2016.
(
JCOS s.n.
KHD00063906‡
UCR277960‡
)
.
Geraniaceae
Erodium cicutarium (L.) L'Her. ex Aiton. Hemlock-leav'd Crane's-bill. Weed: CO DofA, List: C. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
just beginning to bloom
4429.
3/13/2026.
.
 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 cereum Douglas. Wax Currant. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
Rocky outcrops on the toe of a landslide.
West slopes of North Table Mountain, along the City of Golden's North Table Mountain Trail, about 0.7 km south from North Table Loop, and 2.3 km north of the GNIS location of Golden.
Tom Schweich 1092.
30 Apr 2015.
(
CAS
OBI82126‡
UCR265981‡
)
.
 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. Golden Flora.
- North Table Mountain Open Space (City of Golden), sterile 4430. 3/13/2026. . .
Monarda fistulosa L. Wild Bergamot. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
Low shrubs, forbs, and grasses, with Grindelia subalpina, Heterotheca villosa, Lupinus argenteus var. argenteus, Carex inops var. heliophila, and Bromus japonicus.
Southwest slope of North Table Mountain, northern part of the open space, along a social trail, in an area of hummocky ground suggesting an ancient landslide, 2.34 km. north of the GNIS location of Golden.
Tom Schweich 3425.
23 Jun 2025.
.
 Coll. No. 1245, Monarda fistulosa growing in a patch of poison ivy. |
 Sea of Monarda fistulosa |
 Coll. No. 1201, Monarda fistulosa |
 Coll. No. 1697, Monarda fistulosa |
 Coll. No. 1697, Monarda fistulosa |
Loasaceae
Mentzelia albicaulis (Douglas ex Hook.) Douglas ex Torr. & A. Gray. (Syn: Acrolasia albicaulis (Douglas) Rydb. , Bartonia albicaulis Douglas ex Hooker ) White-Stem Blazing Star. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Annual, 15-20 cm., taproot; Leaves, basal and cauline, deeply pinnately alternately lobed to mid-rib; Bract lanceolate, 6 mm., entire or 3-lobed, green, not conspicuous, not concealing fruits; Corolla petals free, 5-6 mm. × 2.0-2.5 mm. wide, with orange base and yellow tip; Style, 2.8 mm.; Fruit cylindric-obconic (Sect. Trachyphytum), 15-20 mm. × 2.5 (4.0) mm. wide, curved 30°-80°(130°); Seeds in 4 above mid-fruit, angular, 1.3 mm. × 0.7 mm. × 0.5 mm., dark brown to black in age, seed coat cells domed on seed surface edges, seed coat cells flattened away from edges (Described from Coll. No. 390, 427, and 958).
- North Table Mountain Open Space (City of Golden),
The brush is mostly Prunus americanus, with some Prunus virginiana, Rhus trilobata, and Cercocarpus montanus.
Heavy brush and boulders on steep southwest slope of North Table Mountain, above the spring, but below the headscarp of an ancient landslide, 1.87 km. north of the GNIS location of Golden.
Tom Schweich, with Cindy Trujillo 2515.
18 Jun 2021.
(
KHD00075593‡
)
.
Malvaceae
Sphaeralcea coccinea (Nutt.) Rydb. Cowboy's Delight. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
Most dense along disturbed trail sides, the roots of this one extended under the trail.
Highest prairie mixed with foothill shrubs, also collected nearby: Aegilops cylindrica, Hesperostipa comata, Lithospermum occidentale, 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, 1.95 km. north of the GNIS location of Golden.
Tom Schweich 2053.
4 Jun 2019.
(
OBI ‡
REGIS
UC
)
.
 Sphaeralcea coccinea (Nutt.) Rydb. On the lowest slopes of North Table Mountain. |
 Coll. No. 1423, Sphaeralcea coccinea |
Montiaceae
Claytonia rosea Rydb. Rocky Mountain Springbeauty. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
4434.
3/26/2026.
.
Nyctaginaceae
Mirabilis linearis (Pursh) Heimerl. (Syn: Oxybaphus linearis (Pursh) B. L. Robinson ) Narrowleaf Four O'Clock. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial herb, to 1 m.; Stem, ascending through brush, glabrous below; Leaves, cauline, alternate, sessile, 90 mm. × 5 mm. wide, linear; Involucre, 15 mm., hairs with pale crosswalls; Flowers, 3 per involucre; Fruit, 4 mm. × 2.2 mm., obovate, ribs 4, hairy. Described from Coll. No. 1273, 30 Jul 2015.
- North Table Mountain Open Space (City of Golden),
4216.
6/27/2025.
Emerging from brush below the trail.
Southwestern slope of North Table Mountain along the North Table Mountain trail (a City of Golden trail), 1.63 km north of the GNIS location of Golden.
Tom Schweich 1273.
30 Jul 2015.
(
KHD00060596‡
)
Widely scattered; collected with Andropogon gerardii.
South side of North Table Mountain, below Climbing Access Trail near the top of the slope; 260 m. southeast of the USBR monument designated “North Table,” 1.38 km. north northeast of the GNIS location of Golden.
Tom Schweich 1525.
5 Aug 2016.
.
 Coll. No. 1273, Mirabilis linearis |
 Coll. No. 1525, Mirabilis linearis |
Onagraceae
Epilobium ciliatum Raf. Fringed Willowherb. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
Small wetland where the North Table Mountain Trail crosses a watercourse below a near-perennial spring that is higher on the south slope of the mesa.
Lower south slopes of North Table Mountain, above Peery Parkway, 250 m. south of the USBR monument “North Table,”1.25 km. north of the GNIS location of Golden.
Tom Schweich 1532.
5 Aug 2016.
(
JCOS s.n.
KHD00063802‡
)
.
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. Golden Flora.
- North Table Mountain Open Space (City of Golden),
West-facing slope with mixed grasses and forbs.
Colorado Noxious Weed List B.
Southwest side of North Table Mountain, along City of Golden North Table Mountain Trail, 2.6 km. north of the GNIS location of Golden.
Tom Schweich 1393.
8 Jun 2016.
(
CAS
CDA0050048‡
JCOS s.n.
KHD00063845‡
OBI83202‡
UCR277987‡
)
Highest prairie mixed with foothill shrubs, also collected nearby: Aegilops cylindrica, Hesperostipa comata, Lithospermum occidentale, Sphaeralcea coccinea, and Thinopyrum intermedium.
Lower southwest slopes of North Table Mountain, on the section line between Sections 21 and 28 which for unknown reason has been plowed or otherwise disturbed, 1.95 km. north of the GNIS location of Golden.
Tom Schweich 2054.
4 Jun 2019.
(
EIU
OBI ‡
REGIS
)
.
.
Penstemon secundiflorus Benth. Sidebells Penstemon. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
West-facing slope with mixed grasses and forbs.
Southwest side of North Table Mountain, along City of Golden North Table Mountain Trail, 2.6 km. north of the GNIS location of Golden.
Tom Schweich 1392.
8 Jun 2016.
(
CAS
JCOS s.n.
KHD00063844‡
OBI83203‡
UC
UCR277988‡
)
.
Polygonaceae
Rumex crispus L. Curley Dock. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
Small wetland where the North Table Mountain Trail crosses a watercourse below a near-perennial spring that is higher on the south slope of the mesa.
Introduced.
Lower south slopes of North Table Mountain, above Peery Parkway, 250 m. south of the USBR monument “North Table,”1.25 km. north of the GNIS location of Golden.
Tom Schweich 1531.
5 Aug 2016.
(
JCOS s.n.
KHD00063562‡
)
.
 Coll. No. 2817, Rumex crispus |
 Coll. No. 818, Rumex crispus |
Rosaceae
Physocarpus monogynus (Torr.) J.M. Coult. (Syn: Spiraea monogyna Torr. ) Mountain Ninebark. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Shrub, height unknown (growing in ravine); Leaves, alternate, simple, hairs stellate, petiole, 10 mm., blade, 30 mm. × 33 mm. wide, ovate, palmate-veined, doubly crenate; Inflorescence, umbellate corymb, ±20-flowered; Pedicels, 8-12 mm.; Flowers, limb, 12 mm., petals, 4.5 mm., color cream; Styles, 2 (Described from Coll. No. 1397, 8 June 2016).
- North Table Mountain Open Space (City of Golden),
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 1397.
8 Jun 2016.
(
CS
JCOS s.n.
KHD00063959‡
OBI83200‡
)
.
.
Prunus americana Marshall. American Plum. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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).
- North Table Mountain Open Space (City of Golden),
4202.
6/23/2025.
in thickets
West slopes of North Table Mountain, along the City of Golden's North Table Mountain Trail, about 1.0 km south from North Table Loop, and 2.0 km north of the GNIS location of Golden.
Tom Schweich 1093.
30 Apr 2015.
(
CAS
UC2045766‡
UCR266075‡
)
.
.
Prunus virginiana L. Chokecherry. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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.
- North Table Mountain Open Space (City of Golden),
4201.
6/23/2025.
.
.
Rosa arkansana Porter. Prairie Rose. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Low-growing perennial, to 20 cm.; Stem, straight slender unequal prickles, present on new growth; Leaves, alternate, compound, leaflets (7)9-11, 20 mm. × 9 mm. wide, serrate, teeth dark-tipped, unclear whether there is glandular exudate, sparsely villous on both sides; Flowers, in clusters of 2-5; Sepals, 16 mm. × 3 mm. wide, abaxial, stalked glandular, adaxial, glandular hairy; Petals, 28 mm. × 21 mm. wide, color pink (Described from Coll. No. 1456, 27 June 2016).
- North Table Mountain Open Space (City of Golden),
4212.
6/23/2025.
.
.
 Coll. No. 3410, Rosa arkansana. |
 Coll. No. 3410, Rosa arkansana. |
 Coll. No. 1456, Rosa arkansana |
 Coll. No. 1670, Rosa arkansana |
 New growth of Coll. No. 1670, Rosa arkansana |
Rubus deliciosus Torr. (Syn: Oreobatus deliciosus Torr.(E. James ex Torr.) Rydb. ) Delicious raspberry. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial shrub, to 1.5 m.; Stem, bark, shreddy; Leaves, simple, 17 mm. × 23 mm. wide, palmate veined, lobed, serrate, few straight hairs, petiole, 11 mm.; Flowers, white, solitary, 17-19 mm.; Fruit, unknown (Described from Coll. No. 1091, 30 Apr 2015).
- North Table Mountain Open Space (City of Golden),
Rocky outcrops on the toe of a landslide.
West slopes of North Table Mountain, along the City of Golden's North Table Mountain Trail, about 0.7 km south from North Table Loop, and 2.3 km north of the GNIS location of Golden.
Tom Schweich 1091.
30 Apr 2015.
(
CAS
OBI82198‡
UC2045767‡
UCR266074‡
)
.
Coll. No. 1091, Rubus deliciosus |
 Coll. No. 1091, Rubus deliciosus |
 Coll. No. 1091, Rubus deliciosus |
Rubiaceae
Galium aparine L. (Syn: Galium aparine L. var. echinospermum (Wallr.) Farw. , Galium spurium L. ) Sticky Willy, Cleavers. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Annual/perennial unknown, weak-stemmed and scrambling through shrubs and grass; Stem, retrorsely scabrous on angles (but not densely so); Leaves, whorls of 6-8 (more leaves above, fewer below), 46 mm. × 4 mm. wide, oblanceolate, margins retrorsely scabrous, tips with a short spine; Flowers, corolla, greenish-white, lobes 1 mm.; Fruit, 1.3 mm., covered with hooked hairs (Described from Coll. No. 1395, 8 June 2016).
- North Table Mountain Open Space (City of Golden),
Shade of large shrubs in 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 1395.
8 Jun 2016.
(
JCOS s.n.
KHD00063847‡
UC
UCR277985‡
)
.
.
 Coll. No. 1395 Galium aparine |
Galium boreale L. (Syn: Galium septentrionale Roem. & Schult. ) Bedstraw. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial, to 40 cm.; Stems, ascending; Leaves, in whorls of 4, tips rounded, 3-nerved; Flowers, cream-colored; Fruit, short-hairy (Described from Coll. No. 2374, 23 June 2020).
- North Table Mountain Open Space (City of Golden),
Seen or collected nearby: Ericameria nauseosa var. graveolens, Campanula rotundifolia, Prunus americana, P. virginiana, Acer glabrum, and Bromus inermis.
Designated as a City of Golden Open Space in 2025.
Along a social trail in the northern part of the North Table Mountain Open Space, beside one of the larger watercourses coming down from the top of the mesa, 2.42 km. north of the GNIS location of Golden.
Tom Schweich 3429.1
23 Jun 2025.
.
 Habitat of Coll. No. 3266, Galium boreale in Coal Creek Canyon. |
 Coll. No 1721.1, Galium boreale |
 Mature Inflorescence of Coll. No 1721.1, Galium boreale |
Salicaceae
Populus deltoides Marshall ssp. monilifera (Aiton) Eckenw. (Syn: Populus sargentii Dode ) Plains Cottonwood. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
Entrance to Jefferson County Open Space, parcel owned by City of Golden.
South slopes of North Table Mountain, along the road to the Golden Cliffs overflow parking, 1.20 km north northeast of the GNIS location of Golden
Tom Schweich 1338.
11 May 2016.
(
KHD00064102‡
UC
UCR278789‡
)
.
Sapindaceae
Acer glabrum Torr. var. glabrum. (Syn: A. glabrum Torr. var. torreyi (Greene) Smiley ) Rocky Mountain Maple. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
Seen or collected nearby: Ericameria nauseosa var. graveolens, Campanula rotundifolia, Prunus americana, P. virginiana, Galium boreale, and Bromus inermis.
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.
Along a social trail in the northern part of the North Table Mountain Open Space, beside one of the larger watercourses coming down from the top of the mesa, 2.42 km. north of the GNIS location of Golden.
Tom Schweich 3429.
23 Jun 2025.
(
KHD
)
.
Zygophyllaceae
Tribulus terrestris L. Puncture Vine. Weed: CO DofA, List: C. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
iNaturalist Observation 185157769.
Tom Schweich 3462.
9/26/2023.
.
 Tribulus terrestris growing in a crack between sidewalk and wall. |
 Coll. No. 994, Tribulus terrestris |
Cyperaceae
Carex L. Sedge. CalPhotos. Jepson eFlora. SEINet Taxon.
- North Table Mountain Open Space (City of Golden),
Tom Schweich, with Cindy Trujillo 2514.1
18 Jun 2021.
(
Discarded.
)
.
.
 Inforescence of Coll. No. 3293, Carex sp. |
Carex brevior (Dewey) Mack. Shortbeak Sedge. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Coll. No. 1145, 15 June 2015, characters observed: Grass-like perennial, to 75 cm.; Leaves, basal and lower cauline; Inflorescence, terminal, multiple individually distinct spikelets; Bracts, 9 mm., <inflorescence and spikelets, lacking sheath, strong central vein, Spikelets, 4-6 per stem, 10 mm. × 5 mm. wide, gynecandrous (staminate below, pistillate above); Scales, thin, <perigynia; Perigynia, 4.5 mm. × 3 mm. wide, 1.5 × long as wide, glabrous, margin, ±winged, entire below, serrulate above, beak, 1.4 mm., flat, serrulate to tip; Stigmas, 2; Achene, 2 mm. × 1.5 mm. wide, lenticular. Described from Coll. No. 1145, 15 June 2015.
- North Table Mountain Open Space (City of Golden),
Southwest slopes of North Table Mountain, along an ephemeral stream, about midway between the North Table Mountain Trail below and the Climbing Access Trail above, 1.78 km. north of the GNIS location of Golden.
Tom Schweich, with Cindy Trujillo 2514.
18 Jun 2021.
(
Golden
)
.
.
 Coll. No. 1939, Carex brevior |
 Coll. No. 1450, Carex brevior |
Carex inops L. H. Bailey ssp. heliophila (Mack.) Crins. (Syn: C. pensylvanica Lam. ssp. heliophila (Mack.) W. A. Weber ) Sun Sedge. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial herb, to 16 cm., prior year leaves to 23 cm.; Rhizome, 5-10(12) cm.; Culm, 11.5 cm. × 0.6 mm., ±triangular, but obscured by white striations at least when dry; Leaves, 12 cm. × 1.5 mm., ±flat, some folded ≤30°.; Inflorescence, multiple spikes, all approximate, 1-2 pistillate spike(s) below, 1 staminate spike above; Bracts, lowest, blade 8 mm., sheath 4.5 mm., papery; Pistillate spike, peduncled 1.0-1.3 mm., 9 mm., brown (not black); Staminate spike, terminal, 12-16 mm., ovoid (not cylindric), brown (not black); Scales, >perigynum body; Perigynum, pubescent on faces, margin ciliate; Achenes, unknown. Described from Coll. No. 1079, 23 April 2015, and Coll. No. 1568, 3 Apr 2017.
- North Table Mountain Open Space (City of Golden),
Beside trail, 8 plants in small group, staminate flowers only, lowest southwest slopes.
Tom Schweich 1584.
3/14/2018.
Southwest corner of North Table Mountain, exposed sites on lower slopes, near City of Golden North Table Mountain trail, 1.23 km. north of the GNIS location of Golden.
Tom Schweich 1777.
11 Apr 2018.
(
CAS1040280‡
JCOS s.n.
KHD00068992‡
UCR289039‡
)
.
.
Carex occidentalis L. H. Bailey. Western Sedge. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial sedge; Habit, caespitose; Culms, to 50 cm., slightly scabrous especially below the inflorescence; Leaves, 1.7 mm. wide, green, sheaths, white-hyaline, ventrally smooth; Inflorescence, 29 mm. × 10 mm. wide, loosely clustered; Spikes, identical appearing, 6 mm. × 5 mm. wide, terminal and lateral androgynous (there are no anthers, but the flowers at the top of each spike contain white filaments); Bracts, 5 mm., proximal, 10 mm., <inflorescence, leaf-like; Pistillate scales, 3.5 mm., <perigynia, mid-vein green, brown laterally, hyaline margin; Perigynia, #12 per spike, 4 mm. × 1.6-1.8(2) mm. wide, weakly winged, ±veinless, glabrous, beak, 1 mm., flattish, dorsally bulged and the margin is displaced but not onto the ventral face; Achene, 2.3 mm. × 1.5 mm. wide, biconvex, short oblong; Stigmas, #2; Anthers, n/a; (Described from Coll. No. 2056, 4 Jun 2019, but see also Coll. No. 1913 & 3567.)
- North Table Mountain Open Space (City of Golden),
Small grassy areas on the upper southwest slope of North Table Mountain, hummocky terrain, probably in the head of one or more landslides, 1.98 km. north of the GNIS location of Golden.
Tom Schweich 2056.
4 Jun 2019.
(
KHD00070515‡
)
.
Juncaceae
Juncus interior Wiegand. Inland Rush. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial graminoid, to 45 cm., Culm, 40 cm, round, 1 mm. dia.; Leaves, basal, outer, 7 mm., sheath-like, inner, sheath, 80 mm., open, ligule, 0.5 mm., membraneous, blade, 225 mm., rolled; Bracts, #2, 85 mm., 46 mm.; Pedicel, 3 mm., bract, 2 mm.; Flowers, #17, closely subtended by a pair of scarious bracteoles; Tepals, 3.2 mm. lanceolate, tip acuminate, green center, then light brown strips, then scarious margin; Capsule, 3.5 mm., rounded at summit, placenta extends nearly to tip; Seeds, 0.5 mm., oblong, not tailed, annular grooves; (Described from Coll. No. 1527, 5 August 2014).
- North Table Mountain Open Space (City of Golden),
Small wetland where the North Table Mountain Trail crosses a watercourse below a near-perennial spring that is higher on the south slope of the mesa.
Lower south slopes of North Table Mountain, above Peery Parkway, 250 m. south of the USBR monument “North Table,”1.25 km. north of the GNIS location of Golden.
Tom Schweich 1527.
5 Aug 2016.
(
JCOS s.n.
KHD00063447‡
)
Previously collected here: Rumex crispus, Poa palustris, Elymus trachycaulus, and Thlaspi arvense.
Southwest slope of North Table Mountain, where a spring-fed stream crosses the City of Golden North Table Mountain Trail, forming a very small wetland, 1.66 km. north of the GNIS location of Golden.
Tom Schweich, with Cindy Trujillo 2513.
18 Jun 2021.
(
Golden
)
.
Liliaceae
Calochortus gunnisonii S. Watson. Gunnison's Mariposa Lily. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
Mixed grasses and forbs.
Southwest slope of North Table Mountain, just below the basalt rim, where a social trail climbs through the rim from the City of Golden North Table Mountain trail, 1.7 km. north of the GNIS location of Golden.
Tom Schweich, with Greg McKittrick 1444.
22 Jun 2016.
(
JCOS s.n.
KHD00063426‡
)
.
Melanthiaceae
Toxicoscordion paniculatum (Nutt.) Rydb. (Syn: Zigadenus paniculatus (Nutt.) S. Watson , Zigadenus paniculatus (Nutt.) S. Watson ) Foothill Death Camas. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
4195.
6/23/2025.
.
 Likely Toxicoscordion paniculatum whose leaf tips were scorched by the Hogback Fire (2023). |
 Inflorescence of Coll. No. 2055, Toxicoscordion paniculatum |
Poaceae
Aegilops cylindrica Host. (Syn: Cylindropyrum cylindricum (Host) Á.Löve ) Jointed Goat Grass. Weed: CO DofA, List: B. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
- North Table Mountain Open Space (City of Golden),
Highest prairie mixed with foothill shrubs, also collected nearby 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 2050.
4 Jun 2019.
(
CAS
REGIS
UC
)
.
.
 Inflorescence of Coll. No. 1139, Aegilops cylindrica |
 Inflorescence of Coll. No. 1139, Aegilops cylindrica |
Andropogon gerardii Vitman. Big Bluestem. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial, to 85 cm., clumped, rhizomes unknown; Leaves, blade and sheath differentiated; Sheath, 11 cm., open; Ligule, membraneous (though surrounded by hairs), 3 mm., auricles 0; Blade, soft, flat, 27 cm., hairy near ligule; Inflorescence, 80 mm., > leaves, 1-2 per stem, in 5-6 digitate branches, spikelets many; Rachis, soft bristles on margins and at nodes; Disarticulation at nodes of rachis; Spikelets in pairs, Sterile spikelet, 7 mm., pedicel 4.5 mm.; Fertile spikelet, Florets #1, Glumes, awns 0, ±equal, lower keeled, upper flattened and grooved; Lemma, 6 mm., membraneous, rolled, glabrous, tip 2-forked, awn, #1, 13 mm., bent, twisted, attached on back; Stamens, 3; Anthers, yellow; Ovary, glabrous; Stigma, feathery. (Described from Coll. No. 1060, 28 Aug 2014).
- North Table Mountain Open Space (City of Golden),
Collected with Mirabilis linearis.
South side of North Table Mountain, below Climbing Access Trail near the top of the slope; 260 m. southeast of the USBR monument designated “North Table,” 1.38 km. north northeast of the GNIS location of Golden.
Tom Schweich 1524.
5 Aug 2016.
(
EIU
JCOS s.n.
KHD00063433‡
)
.
.
 Dissected spikelet pair of Coll. No. 1060, Andropogon gerardii |
 Inflorescence of Coll. No. 1265, Andropogon gerardii |
 Spikelets of Coll. No. 1265, Andropogon gerardii |
Bromus japonicus Thunb. Japanese Cheat Grass. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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.
- North Table Mountain Open Space (City of Golden),
Low shrubs, forbs, and grasses, with Grindelia subalpina, Heterotheca villosa, Lupinus argenteus var. argenteus, Monarda fistulosa, and Carex inops var. heliophila.
Southwest slope of North Table Mountain, northern part of the open space, along a social trail, in an area of hummocky ground suggesting an ancient landslide, 2.34 km. north of the GNIS location of Golden.
Tom Schweich 3424.
23 Jun 2025.
(
UCR
)
.
.
 Coll. No. 1207, Bromus japonicus |
 Coll. No. 1461, Bromus japonicus |
 Coll. No. 1207, Bromus japonicus |
 Coll. No. 1207, Bromus japonicus |
Elymus trachycaulus (Link) Gould ex Shinners. Slender Wheatgrass. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial grass, 75-100 cm., probably not rhizomatous, generally glabrous except as noted; Leaves, sheath, 130 mm., open, ligule, membraneous, auricles, small, 0-1 mm., blade, 25-200 mm. × 3.5 mm. wide, green, flat, scabrous; Inflorescence, 1 per culm, bi-lateral spike, 110 mm × 6 mm. wide; Rachis, internode 4.5 mm.; Spikelets, many, mostly 1 per node, about 1/3 have 2 per node, 17-21 mm. × 2.5-3.5 mm. wide, exclusive of awns, compression, weakly lateral; Disarticulation, between the florets; Glumes, #2, ±equal, lower, 11 mm. × 1.5 mm. wide + awns 2.0-2.5 mm., not quite straight, thick, tough, not keeled, veins, 5, prominent, margins, widest at middle, upper, 13 mm. × 1.8 mm. wide + awn 1.8 mm., veins, 7, >lowest floret; Florets, #4-8, lower bisexual, uppermost sterile; Callus, short straight white hairs; Lemma, rolled, 9-10 mm. + awn 3-22 mm., slightly curved, attached, end, longitudinally symetric, tip, bifid; Palea, 9 mm., <lemma, white except veins green and ciliate, tip, bifid, veins, ciliate; Anthers, 3 mm. or shriveled; Achene, 4 mm., green (Described from Coll. No. 1528, 5 August 2016, and Coll. No. 2647, 5 August 2022. See also #3309, 19 July 2024.)
- North Table Mountain Open Space (City of Golden),
Small wetland where the North Table Mountain Trail crosses a watercourse below a near-perennial spring that is higher on the south slope of the mesa.
Lower south slopes of North Table Mountain, above Peery Parkway, 250 m. south of the USBR monument “North Table,”1.25 km. north of the GNIS location of Golden.
Tom Schweich 1528.
5 Aug 2016.
(
EIU
JCOS s.n.
KHD00063436‡
)
.
.
Hesperostipa comata (Trin. & Rupr.) Barkworth. (Syn: Stipa comata Trin. & Rupr. ) Needle and Thread. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial, 50 cm., clumped, nonrhizomatous; Roots, fibrous; Stem, herbaceous; Leaves, blade and sheath differentiated; Sheath, 100-120 mm., open ≥½, glabrous; Ligule, membranous, length 3.7 mm., lacerate into 2 equal parts, auricles 0; Blade, 60 mm., involute, glabrous; Inflorescence, 1 per culm, >leaves, panicle, 200 mm. × 30 mm. wide; Rachis, not extended, somewhat scabrous throughout; Spikelets, many, similar, borne singly; Compression, unremarkable; Disarticulation, above the glumes; Glumes, lower, 23-34 mm., veins #3, upper, 23-29 mm., veins #5, awl-shaped, rounded, membranous, ±equal, tip, very narrow, not awned; Florets, 1 per spikelet; Callus, 4.5-50 mm., sharp, straight hairs 1.0-1.5 mm., color tan; Lemma, 9.5-10.0 mm., rolled, indurate, straight hairy 0.5 mm., color white-tan, veins #3(?), awns, #1, 125-160 mm., twisted and short straight hairy proximal 45 mm., bent, scabrous distally; Palea, 9 mm., ±lemma, few white hairs on mid-vein; Stamens, #3; Anthers, 6.5 mm. (Described from Coll. No. 1890, 28 May 2018).
- North Table Mountain Open Space (City of Golden),
Highest prairie mixed with foothill shrubs, also collected nearby: Aegilops cylindrica, 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 2051.
4 Jun 2019.
(
CAS992107‡
CS198656‡
EIU
UCR297669‡
)
.
.
 Coll. No. 992, Stipa comata var. comata |
 Coll. No. 1929, Hesperostipa comata |
 Florets of Coll. No. 1890, Hesperostipa comata |
Nassella viridula (Trin.) Barkworth. (Syn: Stipa viridula Trin. ) Green Needlegrass. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial grass, 70-100 cm., clumped, non-rhizomatous; Stem, herbaceous; Leaves, cauline, sheath, 17 mm., ligule, 3 mm., membraneous, collar with few hairs at sides, blade, to 30 cm., convolute; Inflorescence, 1 per culm, panicle, 20-25 cm.; Rachis, lightly scabrous, not extended beyond upper spikelet; Compression, unremarkable; Spikelets, 1 per node; Florets, 1 per spikelet, bisexual; Glumes, 2, 8-9 mm., ±equal, rounded, membraneous, colorless, exc. 3 green veins, tip, short (2 mm.) hair-like awn; Disarticulation, above the glumes, Florets, 1 per spikelet; Callus, short; Lemma, 5-6 mm. × 1.2 mm. wide, <glumes, green, hairy, <1 mm., indurate, enclosing grain, awns, #1, 20-25 mm., twisted, bent, short hairy (±0.2 mm.); Palea, 1.5-2.0 mm., <lemma, membraneous, glabrous; Stamens, #3. Described from Colls. No. 1146, 1652, and 1698.
- North Table Mountain Open Space (City of Golden),
4209.
6/23/2025.
.
.
 Inflorescence of Coll. No. 1146, Nassella viridula |
 Inflorescence of Coll. No. 1146, Nassella viridula |
 Inflorescence of Coll. No. 1652, Nassella viridula |
Poa palustris L. Fowl Bluegrass. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial grass, to 1 m., growing in running water; rhizomes, unknown (none seen); Leaves, sheath open, ligule, membraneous, 4 mm., blade, flat, scabrous, tip, narrow, not broadly prow-shaped; Inflorescence, open panicle, 28 cm. × 20 cm. wide, lower branches 4-5 per node; Pedicels, 0.3-3.0 mm.; Spikelets, 1 per node, 4 mm. × 1 mm., compression lateral, glumes, lemma, and paleae very fragile; Glumes, #2, lower, 2.6 mm., veins 3, upper, 2.8 mm., veins 3 (5?); Disarticulation, above the glumes; Florets, 3 fertile, + uppermost rudimentary; Lemma, 2.6 mm., veins, at least 3, maybe 5, basal hairs sparse, but length 1/2 the lemma, keeled, hairy proximally, margin, hairy proximally, glabrous between the veins; Palea, 2.3 mm. (Described from Coll. No. 1529, 5 August 2016.)
- North Table Mountain Open Space (City of Golden),
Small wetland where the North Table Mountain Trail crosses a watercourse below a near-perennial spring that is higher on the south slope of the mesa.
Lower south slopes of North Table Mountain, above Peery Parkway, 250 m. south of the USBR monument “North Table,”1.25 km. north of the GNIS location of Golden.
Tom Schweich 1529.
5 Aug 2016.
(
JCOS s.n.
KHD00068389‡
)
Small wetland where the North Table Mountain Trail crosses a watercourse below a near-perennial spring that is higher on the south slope of the mesa.
Same as Coll. No. 1529, but this one shows the decumbent culms that are purplish at the base.
Lower south slopes of North Table Mountain, above Peery Parkway, 250 m. south of the USBR monument “North Table,”1.25 km. north of the GNIS location of Golden.
Tom Schweich 1530.
5 Aug 2016.
(
JCOS s.n.
KHD00063444‡
)
.
.
 Coll. No. 1529, Poa palustris |
 Spikelets of Coll. No. 1529, Poa palustris |
Poa pratensis L. (Syn: P. agassizensis B. Boivin & D. Löve ) Kentucky Bluegrass. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial grass, to 40-75 cm.; Roots fibrous; Rhizomes slender, light-colored, 0.8-1.0 mm. dia., to 12 cm.; Culm, not bulbous at base, not strongly flattened; Nodes; Leaf blades and sheath differentiated, soft, Sheath, 85-130 mm., open at least ½; Auricles 0; Ligules membraneous, ≤1 to 1.8 mm.; Blade, lower involute or folded, upper flat, 25-75 mm. × 3 mm. wide, margin, scabrous, tip ±prow-shaped (or not); Inflorescence 1 per culm, terminal, panicle, 70-130 mm. × 33-65 mm. wide, pyramidal, branches scabrous; Rachis, not extended, glabrous; Spikelets, 4-5 mm. × 2.5 mm. wide, similar throughout plant, singly pedicelled on 2°-5° branches, pedicels 0.5-2.0 mm., with both pistillate and staminate florets; Compression lateral; Disarticulation above the glumes; Glumes, keeled, keels, glabrous, scabrous, or with small line of stiff hairs distally, lower, 2.0-2.8 mm., <lowest lemma, veins 1 or 3, upper, 2.5-3.0 mm., veins 3; Florets, #(2)3-4 per spikelet (eliminates Agrostis), mostly bisexual; Rachilla, extends 1 mm. above upper floret, not hairy; Callus long cobwebby hairs (distinctive!), or with some cobwebby hairs, but cobwebby hairs also elsewhere; Lemma 2.7-3.0 mm., >glumes, glabrous, veins 3-5, likely 5 as the 2 outer veins that are visible are quite near margins, short hairy on keel and margins cobwebby proximally, margins scarious, tip broadly acute, Awns 0; Palea 2.3-3 mm., ≤lemma, membraneous, green, esp. on veins, keel scabrous, intercostal regions narrow and glabrous; Anthers #3, 1-1.6 mm., purple (streaked); Stigma feathery, white. Described from Coll. Nos. 470 & 860, Mono County, CA, and Coll. Nos. 1118, 1420 & 1889, 2057, Jefferson County, CO. Subspecies of P. pratensis are not recognized in Colorado (Weber&Wittmann 2012, Ackerman 2015).
- North Table Mountain Open Space (City of Golden),
Small grassy areas on the upper southwest slope of North Table Mountain, hummocky terrain, probably in the head of one or more landslides, 1.96 km. north of the GNIS location of Golden.
Tom Schweich 2057.
4 Jun 2019.
(
REGIS
UCR
)
.
.
 Coll. No. 2057, Poa pratensis |
 Coll. No. 3019, Poa pratensis. |
 Inflorescence of Coll. No. 1420, Poa pratensis |
 Roots of Coll. No. 1420, Poa pratensis |
Sporobolus cryptandrus (Torr.) A. Gray. (Syn: Agrostis cryptandra Torr. ) Sand Drop-seed. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
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. Described from Coll. No. 1757, 31 Aug 2017.
- North Table Mountain Open Space (City of Golden),
Mostly grassland with a few shrubs, also collected nearby: Corydalis aurea, Securigera varia, and Erigeron tracyi.
Lower south slopes of North Table Mountain, beside the access road to the overflow (upper) parking lot for the Golden Cliffs climbing area, 1.57 km. northeast of the GNIS location of Golden
Tom Schweich, with Cindy Trujillo 2512.
18 Jun 2021.
(
KHD00075350‡
)
.
.
Thinopyrum intermedium (Host) Barkworth & D.R. Dewey. (Syn: Elytrigia intermedia (Host) Nevski , Elymus hispidus (Opiz) Melderis ) Intermediate Wheatgrass. CalPhotos. Jepson eFlora. SEINet Taxon. Golden Flora.
Perennial grass, to >1 m., rhizomatous; Leaves, sheath, open, 19 cm., outer margin ciliate proximally, ligules, membraneous, 1 mm., auricles, 0, blade, 24 cm., involute; Inflorescence, 2-sided spike; Spikelets, 1 per node, sessile, ascending; Glumes, ±equal, 7.5-8.0 mm., stiff, veins 5, tip offset mucronate, awn 0, sparsely hairy on veins and margins; Florets per spikelet, 6; Lemma, 9 mm., stiff, veins 5, tip rudimentary awn; Palea, 8.5 mm., robust, fused to grain. Described from Coll. No. 1272, 20 July 2015.
- North Table Mountain Open Space (City of Golden), Flat area with rock outcrops, probably the headscarp of a small landslide. Southwest slopes of North Table Mountain, 1.34 km north of the GNIS location of Golden Tom Schweich 1272. 30 Jul 2015. ( CAS KHD56537‡ UC UCR267475‡ ) .
| Total number of taxa: | 85 |
| Native Taxa: (serif, italic, bold) | 65 |
| Exotic Taxa: (sans-serif, italic) | 19 |
| Nativity Undetermined: (default font, italic) | 1 |
| Listed Weeds: Identified as Weed | 9 |
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: 8/1/2026 3:22:22 PM.
