Goodwell and Texhoma, Oklahoma
Pasture and Roadside Plants

Oenothera macrocarpa
Hoary evening primrose

Fruit

Oenothera macrocarpa
Hoary evening primrose
May 24, & June 1, 2005

Compare with Calylophus hartwegii - Hartweg evening primrose

Compare with Calylophus serrulatus - Yellow Evening Primrose