• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

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.

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