Oenothera biennis

(redirected from Weedy evening-primrose)
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Related to Weedy evening-primrose: Oenothera fruticosa
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Noun1.Oenothera biennis - a coarse biennial of eastern North America with yellow flowers that open in the eveningOenothera biennis - a coarse biennial of eastern North America with yellow flowers that open in the evening; naturalized in Europe
evening primrose - any of several plants of the family Onagraceae