Authors: Tom Schweich (tomas@schweich.com)
Locality: Jefferson County Open Space, Jefferson County, Colorado
Notes: List based upon four seasons (2015-2018) of collecting. Vouchers deposited at Jefferson County Open Space, almost completely duplicated at KHD, with some additional vouchers distributed around the West.

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Families: 43
Genera: 150
Species: 199
Total Taxa (details): 200
Asclepias speciosa Torr. - Showy Milkweed
Asclepias viridiflora Raf. - Green Comet Milkweed
Erigeron sp. L. - fleabane
Erigeron tracyi Greene - Running Fleabane
Heterotheca villosa (Pursh) Shinners - Hairy False Golden-Aster
Senecio sp. L. - ragwort
Senecio integerrimus Nutt. - Lamb-Tongue Ragwort
Solidago sp. L. - goldenrod
Solidago rigida L. - Hard-Leaf Flat-Top-Goldenrod
Solidago speciosa Nutt. - Showy Goldenrod
Arabis pycnocarpa M. Hopkins - Hairy Eared Rockcress
Echinocereus viridiflorus Engelm. - Nylon Hedgehog Cactus
Cerastium arvense L. - Field Mouse-Ear Chickweed
Dianthus armeria L. - Deptford Pink
Silene csereii Baumg. - Balkan Catchfly
Sedum lanceolatum Torr. - Lance-Leaf Stonecrop
Carex inops L. H. Bailey - Long-Stolon Sedge
Dalea purpurea Vent. - Violet Prairie-Clover
Lupinus caudatus Kellogg - Kellogg's Spurred Lupine
Geranium sp. L. - geranium
Ribes aureum Pursh - Golden Currant
Ribes cereum Douglas - White Squaw Currant
Sisyrinchium montanum Greene - Strict Blue-Eyed-Grass
Calochortus gunnisonii S. Watson - Gunnison's Mariposa-Lily
Lythrum alatum Pursh - Wing-Angle Loosestrife
Epilobium sp. L. - willowherb
Oenothera sp. L. - evening primrose
Oxalis stricta L. - Upright Yellow Wood-Sorrel
Plantago sp. L. - plantain
Plantago major L. - Great Plantain
Veronica anagallis-aquatica L. - Blue Water Speedwell
Agrostis stolonifera L. - Spreading Bent
Aristida purpurea Nutt. - Purple Three-Awn
Briza sp. L. - quakinggrass
Poa sp. L. - bluegrass
Poa pratensis L. - Kentucky Blue Grass
Eriogonum alatum Torr. - Winged Wild Buckwheat
Rumex acetosella L. - Common Sheep Sorrel
Cercocarpus montanus Raf. - Alder-Leaf Mountain-Mahogany
Potentilla sp. L. - cinquefoil
Potentilla hippiana Lehm. - Woolly Cinquefoil
Potentilla rivalis Nutt. - Brook Cinquefoil
Potentilla supina L. - Bushy Cinquefoil
Prunus virginiana L. - Choke Cherry
Scrophularia lanceolata Pursh - Lance-Leaf Figwort