What is "oenothera fruticosa"

Sundrops \Sun"drops`\, n. [Sun + drop.] (Bot.) Any one of the several species of Kneiffia, esp. K. fruticosa (syn. [OE]nothera fruticosa), of the Evening-primrose family, having flowers that open by daylight.

Oenothera fruticosa, narrowleaf evening primrose or narrow-leaved sundrops, is a species of flowering plant in the evening primrose genus of the family Onagraceae, native to much of eastern North America. It is an erect herbaceous perennial growing to tall, with alternative, simple, entire or slightly toothed leaves. The saucer- or cup-shaped yellow flowers, in diameter, appear in late spring and summer. The fruit is a capsule that is strongly 4-angled or winged and shaped like a club. Also called sundrop or Sun Drop. http://www.pwconserve.org/plants/sundrop.html