Oenothera villosa

Oenothera villosa, the hairy evening primrose, is a species of flowering plant in the family Onagraceae. It is native to nearly all of the United States (except Hawaii, Alaska, Louisiana, Florida, and South Carolina), and to all Canadian provinces and the Northwest Territories. It has been introduced to cool and cold-temperate regions worldwide. An erect biennial reaching 6 ft, it is typically found in open areas and disturbed situations.

Subtaxa
The following subspecies are accepted:
 * Oenothera villosa subsp. strigosa (Rydb.) W.Dietr. & P.H.Raven – western and central North America, and introduced to central Europe
 * Oenothera villosa subsp. villosa – central and eastern North America, and introduced worldwide