Oenothera howardii
(Howard's Evening Primrose)
Family:
Onagraceae (Evening Primrose)
Oenothera howardii
is a yellow, stemless Evening Primrose with large, showy flowers. It is found on dry slopes and shale outcrops.
Vegetation zone:
Plains, Foothills
Time of bloom:
May - July
Origin:
Native
Eastern Colorado Wildflowers
