- evening primrose - any of several plants of the family Onagraceae
--1 is a kind of herb, herbaceous plant
--1 is a member of Onagraceae, family Onagraceae, evening-primrose family
--1 has particulars:enchanter's nightshade; common evening primrose, German rampion, Oenothera biennis; sundrops, Oenothera fruticosa; Missouri primrose, Ozark sundrops, Oenothera macrocarpa