Oenothera perennis L.  
Family: Onagraceae
small evening-primrose, small sundrops
[Kneiffia perennis (L.) Pennell, Kneiffia pumila (L.) Spach, Oenothera perennis var. rectipilis L., Oenothera perennis var. typica L., Oenothera pumila L., Oenothera pumila var. rectipilis L.]
Oenothera perennis image
Robert W. Freckmann  
Etymology: Oenothera: from Greek oinos, "wine," and thera, "to imbibe," because an allied European plant was thought to induce a taste for wine
Plants: erect, perennial, 4"-24" tall forb; stems usually unbranched
Leaves: lance-like to elliptical, alternate
Flowers: yellow, 4-parted, 1/3"-3/4" wide, opening one by one and becoming erect, petals notched; inflorescence a terminal, usually unbranched spike nodding at the tip; blooms May-July
Fruits: 4 -angled capsule, elliptical to oblong tapering toward the base; seeds without tufts of hair at the top
Habitat: dry to moist; prairies, meadows, open woods; in sandy soil
Conservation Status: Native
Oenothera perennis image
Emmet J. Judziewicz  
Oenothera perennis image
Emmet J. Judziewicz  
Oenothera perennis image
Merel R. Black  
Oenothera perennis image
Botanical Illustration  
More Images    View Genus       View Specimen Records       Close window