Oenothera caespitosa
(Tufted Evening Primrose)
Family:
Onagraceae (Evening Primrose)
  
Oenothera caespitosa is stemless, with the flower arising directly from the basal rosette of leaves. Flowers turn pink as they fade from blooming. Leaves are up to 6 inches long with wavy or toothed margins.

Vegetation zone:  Plains, Foothills, Montane
Time of bloom:  May - August
Origin:  Native
Eastern Colorado Wildflowers