Wildflowers - Yellow Evening Primrose

Yellow Evening Primrose, Yellow Sundrops, Half-Shrub Sundrops, Plains Yellow Primrose, Tooth-Leaved Evening Primrose, Calylophus serrulatus, Oenothera serrulata

Yellow Evening Primrose, Yellow Sundrops, Half-Shrub Sundrops, Plains Yellow Primrose, Tooth-Leaved Evening Primrose - Calylophus serrulatus, Oenothera serrulata

NPS Photo by Jim Pisarowicz

 
Evening Primroses have flowers that open in the evening and generally remain open the next day before withering.

Did You Know?