Calylophus lavandulifolius
(Lavenderleaf Sundrops)
Onagraceae (Evening Primrose)
Lavenderleaf Sundrops is a low-growing plant with linear leaves, similar to a lavendar plant. It is a common species on dry sites on the plains of eastern Colorado.

Compare to Calylophus serrulatus, which is a larger plant with broader, finely toothed leaves.

Vegetation zone:  Plains
Time of bloom:  May - July
Origin:  Native
Eastern Colorado Wildflowers