Goodwell and Texhoma, Oklahoma
Pasture and Roadside Plants

Calylophus hartwegii
Hartweg evening primrose

Fruit

Calylophus hartwegii
Hartweg evening primrose
June 1, 2005

Compare with Calylophus serrulatus - Yellow Evening Primrose

Compare with Calylophus lavandulifolius - Lavender leaf primrose