Russian Olive (Elaeagnus angustifolia)

Russian Olive (Elaeagnus angustifolia)

Russian Olive (Elaeagnus angustifolia), Oleaster Family (Elaegnaceae), introduced noxious weed, often cultivated and where it is found along roadsides, streams, or floodplains from plains to foothills on the Eastern and Western Slopes. Blooms from May through July....
Fuzzytongue Penstemon (Penstemon eriantherus)

Fuzzytongue Penstemon (Penstemon eriantherus)

Fuzzytongue Penstemon (Penstemon eriantherus), Plantain Family (Plantaginaceae), Native, G4S1 (uncommon but not rare globally, critically imperiled in Colorado), found in grasslands from plains to foothills on the Eastern Slope. Blooms from May through July. Photo...
Western Salsify (Tragopogon dubius)

Western Salsify (Tragopogon dubius)

Western Salsify (Tragopogon dubius), Aster Family (Asteraceae), Introduced species found in disturbed places and open meadows from the plains to subalpine, on the Eastern and Western Slopes. Blooms from May through September. Photo by Mo...
Burr Buttercup (Ranunculus testiculatus)

Burr Buttercup (Ranunculus testiculatus)

Burr Buttercup (Ranunculus testiculatus), Buttercup Family (Ranunculaceae), introduced species found in disturbed areas such as trailheads, parking lots, lawns and forest clearings and on dry slopes from plains to foothills on the Eastern and Western Slopes. Blooms...