Plant Check List for DeLong Park (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 (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 DeLong Park (City of Golden), Jefferson County, United States.
2. [ ] Juniperus scopulorum Sarg. 'Cologreen'. Cologreen Rocky Mountain Juniper. * DeLongH
4. [ ] Pinus aristata Engelm. Bristlecone Pine. * DeLongH
5. [ ] Pinus heldreichii H. Christ var. leucodermis. Bosnian Pine. * DeLongH
7. Tribe: Smyrnieae
8. [ ] Conium maculatum L. Common Poison Hemlock. CC:0 Weed: CO DofA, List: C.
10. Tribe: Anthemideae
11. SubTribe: Matricariinae
12. [ ] 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. CC:4 DeLongH
13. Tribe: Astereae
14. SubTribe: Chrysopsidinae
15. [ ] 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 Native, likely adventive.
16. SubTribe: Conyzinae
17. [ ] Conyza canadensis (L.) Cronquist. (Syn: Erigeron canadensis (L.) Cronquist ) Canadian Horseweed. CC:1 Weed
18. SubTribe: Machaerantherinae
19. [ ] Grindelia subalpina Greene. Subalpine Gumweed. CC:4
20. SubTribe: Pentachaetinae
21. [ ] 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 Thin.
22. [ ] Ericameria nauseosa (Pall. ex Pursh) G. I. Nesom & G. I. Baird var. nauseosa. (Syn: Chrysothamnus plattensis Greene ) Rubber Rabbitbush. CC:3
23. Tribe: Calenduleae
24. [ ] Osteospermum 'Analanche'. Avalanche White Dwarf Sun Daisy. * DeLongH
25. Tribe: Cardueae
26. SubTribe: Carduinae
27. [ ] Cirsium arvense (L.) Scop. (Syn: Breea arvensis (L.) Lessing ) Canada Thistle. CC:0 Weed: CO DofA, List: B.
28. SubTribe: Onopordinae
29. [ ] Onopordum acanthium L. Scotch Cottonthistle. CC:0 Weed: CO DofA, List: B.
30. Tribe: Cichorieae
31. SubTribe: Crepidinae
32. [ ] Taraxacum officinale F. H. Wigg. (Syn: T. laevigatum (Willd.) DC. ) Common Dandelion. CC:0 Weed
33. SubTribe: Hyoseridinae
34. [ ] Sonchus arvensis L. Field Sowthistle. CC:0 Weed: CO DofA, List: C.
35. [ ] Sonchus asper (L.) Hill. Spiny Sowthistle. CC:0
36. SubTribe: Lactucinae
37. [ ] Lactuca serriola L. Prickly Lettuce. CC:0 Weed
38. Tribe: Coreopsideae
39. [ ] Coreopsis auriculata 'Zampfir'. Fluted Coreopsis. * DeLongH
40. Tribe: Cynareae
41. [ ] Arctium minus Bernh. Lesser Burdock. CC:0 Weed: CO DofA, List: C.
42. Tribe: Helenieae
43. SubTribe: Gaillardiinae
44. [ ] Gaillardia aristata Pursh. Blanketflower. CC:4 DeLongH
45. Tribe: Heliantheae
46. SubTribe: Ambrosiinae
47. [ ] Ambrosia acanthicarpa Hook. Flat-Spine Burr-Ragweed. CC:4 Weed
48. [ ] Ambrosia psilostachya DC. Western Ragweed. CC:3 Thin.
49. SubTribe: Helianthinae
50. [ ] Helianthus pumilus Nutt. Little Sunflower. CC:4
51. SubTribe: Rudbeckiinae
52. [ ] Ratibida columnifera (Nutt.) Woot. & Standl. (Syn: Rudbeckia columnifera Nutt. ) Upright Prairie Coneflower. CC:4 DeLongH
54. [ ] Catalpa speciosa Teas. Western Catalpa. * DeLongH
56. [ ] Ellisia nyctelea (L.) L. Aunt Lucy. CC:3 Adventive native annual. Weed only if it becomes dominant.
58. [ ] Capsella bursa-pastoris (L.) Medik. Shepherd's Purse. CC:0 Weed
59. [ ] Chorispora tenella (Pall.) DC. Crossflower. CC:0 Weed
60. [ ] Descurainia incisa (Engelm.) Britton ssp. incisa. (Syn: D. incisa (Engelm.) Britton ssp. viscosa Rydb.) G. Mulligan ) Mountain Tansymustard. CC:2
61. [ ] Hesperis matronalis L. Dame's Rocket. CC:0 Weed: CO DofA, List: B.
62. [ ] Lepidium draba L. (Syn: Cardaria draba (L.) Desv. ) White Top, Hoary Cress. CC:0 Weed: CO DofA, List: B.
64. [ ] Opuntia macrorhiza Engelm. Western Pricklypear. CC:3
66. [ ] Campanula rapunculoides L. Rampion Bellflower. CC:0
68. [ ] Celtis occidentalis L. Western Hackberry. CC:6 DeLongH
70. [ ] Knautia macedonica Griesb. Macedonian scabious. CC:0 Watch.
71. [ ] Lonicera tatarica L. Tatarian Honeysuckle. CC:0
72. [ ] Viburnum dentatum L. Arrowwood Viburnum. * DeLongH
74. [ ] Scabiosa columbaria 'Butterfly Blue'. Blue Pincushion Flower. * DeLongH
76. [ ] Chenopodium album L. Lambsquarters. CC:0 Weed
77. [ ] Cycloloma atriplicifolium (Spreng.) J. M. Coult. Winged-Pigweed. CC:2 Native, but alien to Jefferson County, Weed
78. [ ] Salsola tragus L. (Syn: S. australis R. Brown , S. iberica (Sennen & Pau) Botschantzev ex Czerepanov , S. kali , S. kali var. tenuifolia Tausch. , S. pestifer Nels. ) Tumbleweed. CC:0 Weed
80. [ ] Cleomella serrulata (Pursh) Roalson & J. C. Hall. (Syn: Cleome serrulata Pursh , Peritoma serrulata (Pursh) DC. ) Rocky Mountain Bee Plant. CC:2 DeLongH
82. [ ] Convolvulus arvensis L. Field Bindweed. CC:0 Weed: CO DofA, List: C.
84. [ ] Euphorbia esula L. Leafy Spurge. CC:0 Weed: CO DofA, List: B.
85. [ ] Euphorbia myrsinites L. (Syn: Tithymalus myrsinites (L.) Hill ) Myrtle Spurge. CC:0 Toxic! Weed: CO DofA, List: A.
87. [ ] Gleditsia triacanthos L. var. inermis C. K. Schneid. 'Imperial'. Imperial Honeylocust. * DeLongH
88. [ ] Lathyrus latifolius L. Perennial Pea Vine. CC:0 Weed Weed: CO DofA, List: Watch.
89. [ ] Melilotus officinalis (L.) Lam. Yellow Sweet Clover. CC:0
90. [ ] Securigera varia (L.) Lassen. (Syn: Coronilla varia L. ) Purple Crownvetch. CC:0 Weed
91. [ ] Trifolium repens L. White Clover. CC:0
93. [ ] Quercus bicolor Willd. Swamp White Oak. * DeLongH
94. [ ] Quercus macrocarpa Michx. Bur Oak. * DeLongH
96. [ ] Erodium cicutarium (L.) L'Her. ex Aiton. Hemlock-leav'd Crane's-bill. CC:0 Weed: CO DofA, List: C.
98. [ ] Ribes cereum Douglas. Wax Currant. CC:6
100. [ ] Caryopteris × clandonensis 'Blue Mist'. Blue Mist Spirea. * DeLongH
101. [ ] Lamium amplexicaule L. Henbit. CC:0 Weed
102. [ ] Nepeta racemosa Lam. Persian Catmint. * Weed.
103. [ ] Salvia × sylvestris 'May Night'. May Night Purple Salvia. * DeLongH
105. [ ] Linum L.. Flax. * DeLongH
107. [ ] Malva neglecta Wallr. Common Mallow. CC:0
109. [ ] Fraxinus pennsylvanica Marshall. Green Ash. *
110. [ ] Syringa vulgaris L. Common Purple Lilac. * DeLongH
112. [ ] Oenothera suffrutescens (Ser.) W. L. Wagner & Hoch. (Syn: Gaura coccinea Pursh , Gaura glabra Lehm. ) Linda Tarde. CC:5
114. [ ] Eschscholzia californica Cham. California Poppy. * Weed ? Not weeding at this time.
116. [ ] 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.
117. [ ] Penstemon pinifolius Greene. Pine-Needle Beardtongue. * DeLongH
118. [ ] Plantago lanceolata L. Narrowleaf Plantain. CC:0
120. [ ] Polygonum aviculare L. Prostrate Knotweed. * Weed
121. [ ] Rumex crispus L. Curley Dock. CC:0 Weed
123. [ ] Ranunculus testiculatus Crantz. (Syn: Ceratocephala orthoceras DC. ) Bur Buttercup. CC:0 Weed
125. Tribe: Rosoideae
126. SubTribe: Colurieae
127. [ ] Fallugia paradoxa (D. Don) Endl. Apache Plume. CC:6 DeLongH
128. SubTribe: Potentilleae
129. [ ] Dasiphora fruticosa (L.) Rydb. 'Gold Drop'. Gold Drop Potentilla. * DeLongH
130. SubTribe: Roseae
131. [ ] Rosa 'Knock Out'. Knock Out Rose. * DeLongH
133. [ ] Galium aparine L. (Syn: Galium aparine L. var. echinospermum (Wallr.) Farw. , Galium spurium L. ) Sticky Willy, Cleavers. CC:1 Weed
135. [ ] Comandra umbellata (L.) Nutt. ssp. pallida (A. DC.) Piehl. (Syn: Comandra umbellata (L.) Nutt. var. pallida (A. DC.) M. E. Jones ) Pale Bastard Toadflax. CC:5
137. [ ] Acer miyabei Maxim. 'Morton'. State Street Maple. * DeLongH
138. [ ] Acer saccharum L. 'JFS-Caddo'. Caddo Sugar Maple. * DeLongH
140. [ ] Heuchera villosa × americana 'Berry Smoothie'. Coral Bells 'Berry Smoothie'. * DeLongH
142. [ ] Scrophularia lanceolata Pursh. Lanceleaf Figwort. CC:5
144. [ ] Solanum elaeagnifolium Cav. Silverleaf Nightshade. *
145. [ ] Solanum rostratum Dunal. Buffalo Bur Nightshade. CC:2 Native, but very prickly, Weed
146. [ ] Solanum triflorum Nutt. Cutleaf Nightshade. CC:2 Native, but very weedy. Weed.
148. [ ] Ulmus pumila L. Siberian Elm. * Weed, 1000s of seedlings. Weed: CO DofA, List: C.
150. [ ] Verbena bracteata Lag. & Rodr. Large Bract Vervain. CC:2 Weed
152. [ ] Tribulus terrestris L. Puncture Vine. CC:0 Weed: CO DofA, List: C.
154. Tribe: Agavoideae
155. SubTribe: Agaveae
156. [ ] Hesperaloe parviflora (Torr.) Coult. Red False Yucca. * DeLongH
158. [ ] Kniphofia uvaria (L.) Oken 'Flamenco'. Torch Lily. * DeLongH
160. [ ] Carex inops L. H. Bailey ssp. heliophila (Mack.) Crins. (Syn: C. pensylvanica Lam. ssp. heliophila (Mack.) W. A. Weber ) Sun Sedge. CC:7
162. Tribe: Andropogoneae
163. [ ] Andropogon gerardii Vitman. Big Bluestem. CC:9
164. [ ] Bothriochloa bladhii (Retz.) S.T. Blake. Australian bluestem, Caucasian Bluestem. CC:0
165. Tribe: Bromeae
166. [ ] Bromus japonicus Thunb. Japanese Cheat Grass. CC:0
167. [ ] Bromus tectorum L. (Syn: B. tectorum L. var. glabratus Spenn. ) Cheat Grass. CC:0 Weed: CO DofA, List: C.
168. Tribe: Cynodonteae
169. [ ] Bouteloua dactyloides (Nutt.) J.T. Columbus. (Syn: Buchloe dactyloides (Nutt.) Engelm. ) Buffalo Grass. * DeLongH
170. [ ] Bouteloua gracilis (Kunth) Lag. ex Griffiths. (Syn: Chondrosum gracile Kunth ) Blue Grama. CC:4 DeLongH
171. [ ] Distichlis spicata (L.) E. Greene. (=Distichlis stricta (Torrey) Rydberg) Saltgrass. * DeLongH
172. Tribe: Eragrostideae
173. [ ] Eragrostis cilianensis (All.) Vignolo ex Janch. Stinkgrass. CC:0 Weed
174. [ ] Sporobolus heterolepis (A. Gray) A. Gray. Prairie Drop-seed. CC:9 DeLongH
175. Tribe: Paniceae
176. [ ] Echinochloa crus-galli (L.) P. Beauv. Barnyardgrass. CC:0 Non-native grass, Weed.
177. [ ] Panicum miliaceum L. Proso Millet. CC:0 Weed: CO DofA, List: C.
178. [ ] Pennisetum alopecuroides (L.) Spreng. 'Hameln'. Dwarf Fountain Grass. * DeLongH
179. [ ] Setaria viridis (L.) P. Beauv. Green Bristlegrass. * Weed
180. SubTribe: Cenchrinae
181. [ ] Cenchrus longispinus (Hack.) Fern. Longspine Sandbur. * Native, but very prickly, Weed
182. Tribe: Poeae
183. [ ] Dactylis glomerata L. Orchard Grass. CC:0 Non-native grass, Weed.
184. [ ] Lolium multiflorum Lam. (Syn: L. perenne L. ssp. multiflorum (Lam.) Husn. ) Annual Ryegrass. CC:0
185. [ ] Poa annua L. Annual Blue Grass. CC:0 Weed
186. [ ] Poa bulbosa L. Bulbous Bluegrass. CC:0 Weed: CO DofA, List: C.
187. Tribe: Stipeae
188. [ ] Eriocoma hymenoides (Roem. & Schult.) Rydb. (Syn: Achnatherum hymenoides (Roem. & Schult.) Barkworth , Oryzopsis hymenoides (Roem. & Schult.) Ricker , Stipa hymenoides Roem. & Schult. ) Indian Rice Grass. CC:3 DeLongH
189. [ ] Hesperostipa comata (Trin. & Rupr.) Barkworth. (Syn: Stipa comata Trin. & Rupr. ) Needle and Thread. CC:6
190. [ ] Nassella viridula (Trin.) Barkworth. (Syn: Stipa viridula Trin. ) Green Needlegrass. CC:4
191. Tribe: Triticeae
192. [ ] Agropyron cristatum (L.) Gaertn. Crested Wheat Grass. CC:0
193. [ ] Elymus canadensis L. Canadian Wildrye. CC:4
194. [ ] Pascopyrum smithii (Rydb.) Á. Löve. (Syn: Agropyron smithii Rydb. ) Western Wheatgrass. CC:5 Native tall cool-season grass that can dominate, Thin. DeLongH
195. [ ] Secale cereale L. Cereal Rye. CC:0
196. [ ] Triticum aestivum L. Wheat. CC:0
| Total number of taxa: | 114 |
| Native Taxa: (serif, italic, bold) | 38 |
| Exotic Taxa: (sans-serif, italic) | 74 |
| Nativity Undetermined: (default font, italic) | 2 |
| Listed Weeds: Identified as Weed | 18 |
| FQA, CC, n=80, Mean C: 1.8, FQI = 15.7 |
Locations Included in This Area
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Date and time this article was prepared: 4/9/2026 6:11:19 PM