Plant Check List for Grampsas North Open Space, City of Golden, Jefferson County, Colorado
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 (http://ucjeps.berkeley.edu/consortium/). For Colorado, much of the data is provided by the Southwest Environmental Information Network, 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. This page is highly summarized. For detail about the distribution of plants, please see: Detailed Area List for Grampsas North Open Space (City of Golden), Jefferson County, United States.
Area Description: The Grampsas North Open Space is a rectangular field about 6˝ acres in size that is north of the mountain bike park. It is fenced on three sides. The west side is bounded by rural housing and several neighbors who came out for a friendly conversation. The north side has a recent housing development. The east side is bounded by the Church Ditch and the Tony Grampsas Trail, which lines both sides of the ditch.
Floristic Quality: FQA, CC, n=57, Mean C: 3, FQI = 22.4
2. [ ] Juniperus scopulorum Sarg. (Syn: Sabina scopulorum Sarg.(Sarg.) Rydb. ) Rocky Mountain Juniper. CC:5
4. [ ] Asclepias viridiflora Raf. Green Comet Milkweed. CC:6
6. Tribe: Anthemideae
7. SubTribe: Artemisiinae
8. [ ] Artemisia dracunculus L. (Syn: Oligosporus dracunculus (L.) Poljakov ssp. glaucis (Pall. ex Willd.) A. Löve & D. Löve ) Tarragon, Dragonwort. CC:3
9. [ ] Artemisia frigida Willd. Prairie Sagewort. CC:4
10. [ ] Artemisia ludoviciana Nutt. Silver Wormwood. CC:4
11. Tribe: Astereae
12. SubTribe: Chrysopsidinae
13. [ ] Heterotheca villosa (Pursh) Shinners. (Syn: H. v. (Pursh) Shinners var. nana (A. Gray) Semple , H. v. (Pursh) Shinners var. villosa ) Hairy False Goldenaster. CC:3
14. SubTribe: Machaerantherinae
15. [ ] Dieteria bigelovii (A. Gray) D. R. Morgan & R. L. Hartman var. bigelovii. Bigelow's Tansy Aster. CC:3
16. [ ] Grindelia squarrosa (Pursh) Dunal. Curlycup Gumweed. CC:3
17. SubTribe: Pentachaetinae
18. [ ] 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. CC:3
19. [ ] Ericameria nauseosa (Pall. ex Pursh) G. L. Nesom & G. I. Baird var. nauseosa. (Syn: Chrysothamnus plattensis Greene ) Rubber Rabbitbush. CC:3
20. SubTribe: Symphyotrichinae
21. [ ] Symphyotrichum ericoides (Linnaeus) G. L. Nesom. (Syn: Virgulus ericoides (Linnaeus) Reveal & Keener ) White Heath Aster. CC:4
22. Tribe: Cardueae
23. SubTribe: Carduinae
24. [ ] Carduus nutans L. (Syn: Carduus nutans L. ssp. macrolepis (Peterman) Kazmi ) Nodding Plumeless Thistle. CC:0 Weed: CO DofA, List: B.
25. [ ] Cirsium arvense (L.) Scop. (Syn: Breea arvensis (L.) Lessing ) Canada Thistle. CC:0 Weed: CO DofA, List: B.
26. SubTribe: Onopordinae
27. [ ] Onopordum acanthium L. Scotch Cottonthistle. CC:0 Weed: CO DofA, List: B.
28. Tribe: Cichorieae
29. SubTribe: Lactucinae
30. [ ] Lactuca serriola L. Prickly Lettuce. CC:0
31. Tribe: Coreopsideae
32. [ ] Thelesperma megapotamicum (Spreng.) Kuntze. Hopi Tea Greenthread. CC:5
33. Tribe: Eupatorieae
34. [ ] Brickellia eupatorioides (L.) Shinners. False Boneset. CC:6
35. [ ] Liatris punctata Hook. Dotted Blazing Star. CC:6
36. Tribe: Heliantheae
37. SubTribe: Ambrosiinae
38. [ ] Ambrosia psilostachya DC. Western Ragweed. CC:3
39. SubTribe: Helianthinae
40. [ ] Helianthus pumilus Nutt. Little Sunflower. CC:4
41. SubTribe: Rudbeckiinae
42. [ ] Ratibida columnifera (Nutt.) Woot. & Standl. (Syn: Rudbeckia columnifera Nutt. ) Upright Prairie Coneflower. CC:4
44. [ ] Alyssum simplex Rudolphi. (Syn: A. campestre (L.) L. var. simplex (Rudolphi) Willd. , A. minus Rothm. , A. parviflorum Fisch. ex M.Bieb. ) European Madwort. CC:0
46. [ ] Cylindropuntia imbricata (Haw.) F. M. Kunth. Tree Cholla. CC:4
47. [ ] Echinocereus viridiflorus Engelm. (Syn: Echinocereus chloranthus (Engelm.) J.N.Haage , Echinocereus viridiflorus Engelm. var. chloranthus (Engelm.) Backeb. ) Nylon Hedgehog Cactus. CC:6
48. [ ] Opuntia macrorhiza Engelm. Western Pricklypear. CC:3
50. [ ] Celtis reticulata Torr. (Syn: Celtis laevigata Willd. var. reticulata L. D. Benson ) Net-Leaved Hackberry. CC:6
52. [ ] Chenopodium album L. Lambsquarters. CC:0
54. [ ] Elaeagnus angustifolia L. Russian Olive. CC:0 Weed: CO DofA, List: B.
56. [ ] Astragalus flexuosus G. Don. Flexible Milkvetch. CC:6
57. [ ] Lathyrus latifolius L. Perennial Pea Vine. CC:0 Weed: CO DofA, List: Watch.
58. [ ] Pediomelum tenuiflorum (Pursh) A. N. Egan. (Syn: Psoralea tenuiflora Pursh , Psoralidium tenuiflorum (Pursh) Rydb. ) Slimflower Scurfpea. CC:5
60. [ ] Ribes cereum Douglas. Wax Currant. CC:6
62. [ ] Juglans nigra L. Black Walnut. CC:0
64. [ ] Nepeta cataria L. Catnip. CC:0
66. [ ] Mentzelia . Blazing Star. *
68. [ ] Mirabilis linearis (Pursh) Heimerl. (Syn: Oxybaphus linearis (Pursh) B. L. Robinson ) Narrowleaf Four O'Clock. CC:5
70. [ ] Argemone polyanthemos (Fedde) G.B. Ownbey. Crested Prickly Poppy. CC:3
72. [ ] Linaria dalmatica (L.) Mill. (Syn: Linaria dalmatica (L.) Mill. ssp. dalmatica , Linaria genistifolia (L.) Mill. ssp. dalmatica (L.) Maire & Petitm. ) Dalmatian ToadFlax. CC:0 Weed: CO DofA, List: B.
74. [ ] Eriogonum alatum Torrey in L. Sitgreaves, Rep. Exped. Zuni Colorado Rivers. 168, plate 8. 1853. (Syn: Pterogonum alatum (Torr.) Gross ) Winged Buckwheat. CC:5
75. [ ] Eriogonum effusum Nuttall, Proc. Acad. Nat. Sci. Philadelphia. 4: 15. 1848. Spreading Buckwheat. CC:5
76. [ ] Rumex crispus L. Curley Dock. CC:0
78. Tribe: Amygdaloideae
79. SubTribe: Amygdaleae
80. [ ] Prunus americana Marshall. American Plum. CC:6
81. [ ] Prunus virginiana L. Chokecherry. CC:4
82. SubTribe: Maleae
83. [ ] Malus L. Apple. *
84. Tribe: Rosoideae
85. SubTribe: Potentilleae
86. [ ] Potentilla recta L. Sulphur Cinquefoil. CC:0 Weed: CO DofA, List: B.
88. [ ] Verbascum thapsus L. Common Mullein. CC:0 Weed: CO DofA, List: C.
90. [ ] Ailanthus altissima (Mill.) Swingle. Tree of Heaven. CC:0 Weed: CO DofA, List: C.
92. [ ] Physalis hederifolia A. Gray. (Syn: Physalis hederifolia A. Gray var. comata (Rydb.) Waterfall ) Ivy-Leaved Ground Cherry. CC:5
93. [ ] Physalis longifolia Nutt. Longleaf Groundcherry. CC:4
95. [ ] Ulmus pumila L. Siberian Elm. CC:0 Weed: CO DofA, List: C.
97. [ ] Undetermined . *
99. [ ] Parthenocissus quinquefolia (L.) Planch. (Syn: Parthenocissus inserta (A.Kern.) Fritsch ) Virginia Creeper. CC:0
101. Tribe: Agavoideae
102. SubTribe: Agaveae
103. [ ] Yucca glauca Nutt. Soapweed Yucca. CC:4
105. Tribe: Andropogoneae
106. [ ] Andropogon gerardii Vitman. Big Bluestem. CC:9
107. Tribe: Aveneae
108. [ ] Koeleria macrantha (Ledeb.) Schult. Prairie Junegrass. CC:6
109. Tribe: Bromeae
110. [ ] Bromus inermis Leyss. (Syn: B. inermis Leyss. ssp. inermis ) Smooth Brome. CC:0
111. [ ] Bromus japonicus Thunb. Japanese Cheat Grass. CC:0
112. [ ] Bromus tectorum L. (Syn: B. tectorum L. var. glabratus Spenn. ) Cheat Grass. CC:0 Weed: CO DofA, List: C.
113. Tribe: Stipeae
114. [ ] Nassella viridula (Trin.) Barkworth. (Syn: Stipa viridula Trin. ) Green Needlegrass. CC:4
115. Tribe: Triticeae
116. [ ] Elymus elymoides (Raf.) Swezey. (Syn: E. longifolius (J. G. Sm.) Gould , Sitanion hystrix (Nutt.) J. G. Sm. ) Squirreltail Grass. CC:4
| Total number of taxa: | 60 |
| Native Taxa: (serif, italic, bold) | 37 |
| Non-native Taxa: (sans-serif, italic) | 20 |
| Nativity Undetermined: (default font, italic) | 3 |
| Listed Weeds: Identified as Weed | 11 |
| FQA, CC, n=57, Mean C: 3, FQI = 22.4 |
Locations Included in This Area
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Date and time this article was prepared: 11/3/2026 12:17:33 PM