oenothera fruticosa

from WordNet (r) 3.0 (2006)

Oenothera fruticosa
    n 1: a day-flowering biennial or perennial of the genus
         Oenothera [syn: {sundrops}, {Oenothera fruticosa}]

from The Collaborative International Dictionary of English v.0.48

Sundrops \Sun"drops`\, n. [Sun + drop.] (Bot.)
   Any one of the several species of {Kneiffia}, esp. {Kneiffia
   fruticosa} (syn. {Oenothera fruticosa}), of the
   Evening-primrose family, having flowers that open by
   daylight.
   [Webster 1913 Suppl.]