Family: Onagraceae
bastard evening-primrose, common evening-primrose
[Oenothera biennis subsp. caeciarum L., more...]
Janice Stiefel
Merel R. Black
University of Wisconsin - Madison (WIS-VP)
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, biennial/perennial, 2'-6' tall forb, mostly smooth
Leaves: lance-like to oblong, alternate
Flowers: yellow, 4-parted, 3/4"-2" wide; inflorescence a stiff, terminal, usually unbranched spike; blooms July-Oct.
Fruits: capsule thickest near the base, seeds without tufts of hair at the top
Habitat: dry to moderate moisture; disturbed sites, prairies
Conservation Status: Native
Plants: erect, biennial/perennial, 2'-6' tall forb, mostly smooth
Leaves: lance-like to oblong, alternate
Flowers: yellow, 4-parted, 3/4"-2" wide; inflorescence a stiff, terminal, usually unbranched spike; blooms July-Oct.
Fruits: capsule thickest near the base, seeds without tufts of hair at the top
Habitat: dry to moderate moisture; disturbed sites, prairies
Conservation Status: Native
Floristic Rating: Coefficient of Conservatism = 1, Wetland Indicator = FACU Atlas of the Wisconsin Prairie and Savanna Flora: by T.S. Cochrane & H.H. Iltis: habitat, distribution infomation / flowering and fruiting times USDA Plants Database: Federal Distribution and detailed information including photos USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. Dan Tenaglia's The Missouri Flora: Fabulous photographs; detailed descriptions; color and leave arrangement key. David G. Smith's "Delaware Wilflowers": Beautiful photographs; descriptions Illinois Wildflowers: Wonderful photographs; detailed descriptions; color and leaf arrangement key Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"
Merel R. Black
Merel R. Black
Matthew L. Wagner
John M. Schoeneker
Robert Bierman
Janice Stiefel
Emmet J. Judziewicz
Kenneth J. Sytsma
John M. Schoeneker
Robert W. Freckmann
Christopher Noll
Kurt Stüber
Caroline A. Creevey
Botanical Illustration
Botanical Illustration
Aaron_Carlson
Aaron_Carlson
Aaron_Carlson
Robert W. Freckmann
