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

a large and widely distributed family of plants of the order Myrtales

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

a coarse biennial of eastern North America with yellow flowers that open in the evening; naturalized in Europe

a day-flowering biennial or perennial of the genus Oenothera

evening-opening primrose of south central United States

a large and widely distributed family of plants of the order Myrtales