Plant Check List for Welch Ditch 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 Welch Ditch (Open Space), Jefferson County County, United States.
Area Description: This is a short portion of the Welch Ditch between South Golden Road and 19th Street.
Floristic Quality: The floristic quality of Welch Ditch is quite low. This is primarily the result of the high proportion of horticultural non-native plants maintained by adjacent landowners.
2. [ ] Juniperus . Horticultural Juniper. *
4. [ ] Picea pungens Engelm. Colorado Blue Spruce. CC:6
5. [ ] Pseudotsuga menziesii (Mirb.) Franco var. glauca (Beissn.) Franco. (Syn: Pseudotsuga menziesii (Mirb.) Franco var. glauca (Mayr) Franco ) Douglas-fir. CC:5
7. [ ] Rhus trilobata Nutt. var. trilobata. (Syn: Rhus aromatica Aiton var. trilobata (Nutt.) A. Gray ex S. Watson ) Skunkbush Sumac. CC:5
9. Tribe: Smyrnieae
10. [ ] Conium maculatum L. Common Poison Hemlock. CC:0 Weed: CO DofA, List: C.
12. [ ] Vinca minor L. Lesser Periwinkle. CC:0
14. Tribe: Astereae
15. SubTribe: Chrysopsidinae
16. [ ] 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
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. Tribe: Cardueae
20. SubTribe: Carduinae
21. [ ] Cirsium arvense (L.) Scop. (Syn: Breea arvensis (L.) Lessing ) Canada Thistle. CC:0 Weed: CO DofA, List: B.
22. Tribe: Cichorieae
23. SubTribe: Crepidinae
24. [ ] Taraxacum officinale F. H. Wigg. (Syn: T. laevigatum (Willd.) DC. ) Common Dandelion. CC:0
25. SubTribe: Scorzonerinae
26. [ ] Tragopogon dubius Scop. (Syn: Tragopogon dubius Scop. ssp. major (Jacq.) Vollman ) Yellow Salsify. CC:0
27. Tribe: Cynareae
28. [ ] Arctium minus Bernh. Lesser Burdock. CC:0 Weed: CO DofA, List: C.
29. Tribe: Heliantheae
30. SubTribe: Helianthinae
31. [ ] Helianthus pumilus Nutt. Little Sunflower. CC:4
33. [ ] Berberis aquifolium Pursh. Holly-leaf Oregon-Grape. CC:0
35. [ ] Cynoglossum officinale L. Gypsyflower. CC:0 Weed: CO DofA, List: B.
37. [ ] 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
38. [ ] Chorispora tenella (Pall.) DC. Crossflower. CC:0
39. [ ] Hesperis matronalis L. Dame's Rocket. CC:0 Weed: CO DofA, List: B.
40. [ ] Thlaspi arvense L. Field Penny Cress. CC:0
42. [ ] Opuntia macrorhiza Engelm. Western Pricklypear. CC:3
44. [ ] Campanula rapunculoides L. Rampion Bellflower. CC:0
46. [ ] Lonicera tatarica L. Tatarian Honeysuckle. CC:0
47. [ ] Symphoricarpos occidentalis Hook. Western Snowberry. CC:3
49. [ ] Chenopodium album L. Lambsquarters. CC:0
51. [ ] Convolvulus arvensis L. Field Bindweed. CC:0 Weed: CO DofA, List: C.
53. [ ] Euphorbia myrsinites L. (Syn: Tithymalus myrsinites (L.) Hill ) Myrtle Spurge. CC:0 Weed: CO DofA, List: A.
55. [ ] Lathyrus latifolius L. Perennial Pea Vine. CC:0 Weed: CO DofA, List: Watch.
56. [ ] Vicia americana Willd. American Vetch. CC:5
58. [ ] Ribes aureum Pursh. Golden Currant. CC:6
60. [ ] Salvia . Horticultural Salvia. CC:0
61. [ ] Stachys byzantina K. Koch. Lamb's Ear. CC:0
63. [ ] Linum lewisii Pursh. (Syn: Adenolinum lewisii (Pursh) A. Löve & D. Löve ) Prairie Blue Flax. CC:4
65. [ ] Fraxinus pennsylvanica Marshall. Green Ash. CC:0
67. [ ] Rumex crispus L. Curley Dock. CC:0
69. Tribe: Amygdaloideae
70. SubTribe: Amygdaleae
71. [ ] Prunus . Horticultural Prunus. CC:0
72. [ ] Prunus americana Marshall. American Plum. CC:6
73. [ ] Prunus virginiana L. Chokecherry. CC:4
74. SubTribe: Maleae
75. [ ] Cotoneaster lucidus Schltdl. Hairy Stem Cotoneaster. CC:0
76. [ ] Malus domestica (Suckow) Borkh. Common Apple. CC:0
77. Tribe: Rosoideae
78. SubTribe: Roseae
79. [ ] Rosa . Horticultural Rose. CC:0
81. [ ] Galium aparine L. (Syn: Galium aparine L. var. echinospermum (Wallr.) Farw. , Galium spurium L. ) Sticky Willy, Cleavers. CC:1
83. [ ] Populus deltoides Marshall ssp. monilifera (Aiton) Eckenw. (Syn: Populus sargentii Dode ) Plains Cottonwood. CC:3
85. [ ] 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
87. [ ] Acer negundo L. (Syn: Acer negundo L. var. interius (Britton) Sarg. , Negundo aceroides (L.) Moench ) Box Elder. CC:4
89. [ ] Ailanthus altissima (Mill.) Swingle. Tree of Heaven. CC:0 Weed: CO DofA, List: C.
91. [ ] Ulmus pumila L. Siberian Elm. CC:0 Weed: CO DofA, List: C.
93. Tribe: Agavoideae
94. SubTribe: Agaveae
95. [ ] Yucca glauca Nutt. Soapweed Yucca. CC:4
97. [ ] Iris L. Horticultural Iris. CC:0
99. Tribe: Bromeae
100. [ ] Bromus inermis Leyss. (Syn: B. inermis Leyss. ssp. inermis ) Smooth Brome. CC:0
101. [ ] Bromus tectorum L. (Syn: B. tectorum L. var. glabratus Spenn. ) Cheat Grass. CC:0 Weed: CO DofA, List: C.
102. Tribe: Poeae
103. [ ] Dactylis glomerata L. Orchard Grass. CC:0
| Total number of taxa: | 51 |
| Native Taxa: (serif, italic, bold) | 18 |
| Non-native Taxa: (sans-serif, italic) | 32 |
| Nativity Undetermined: (default font, italic) | 1 |
| Listed Weeds: Identified as Weed | 11 |
| FQA, CC, n=50, Mean C: 1.5, FQI = 10.5 |
Locations included in this area.