herb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests

evening-primrose family, family Onagraceae, Onagraceae - a large and widely distributed family of plants of the order Myrtales

enchanter's nightshade - any of several erect perennial rhizomatous herbs of the genus Circaea having white flowers that open at dawn; northern hemisphere

common evening primrose, German rampion, Oenothera biennis - a coarse biennial of eastern North America with yellow flowers that open in the evening; naturalized in Europe

Oenothera fruticosa, sundrops - a day-flowering biennial or perennial of the genus Oenothera

Missouri primrose, Oenothera macrocarpa, Ozark sundrops - evening-opening primrose of south central United States