Astragalus sericoleucus or Orophaca sericea
(Silky Milkvetch)

Fabaceae (Pea)
Astragalus sericoleucus is a mat forming legume found primarily on sandstone outcrops on the plains of northeastern Colorado. Flowers are small, less than 1 cm long. Leaves are trifoliate and pubescent.

Compare to Astragalus tridactylicus, which also grows in mats but has slightly larger flowers and grows along the lower foothills.

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