|Scientific Name||Oenothera villosa ssp. strigosa||USDA PLANTS Symbol||OEVIS|
|Common Name||Hairy Evening Primrose, Common Evening Primrose||ITIS Taxonomic Serial No.||524368|
|Family||Onagraceae (Evening Primrose)||SEINet
Life zones and habitat: Plains to montane (4800 to 9500 ft.); dry shrubland, roadsides and disturbed areas.
Plant: Erect biennial or short-lived perennial 1 to 5 feet tall; basal rosette forms in first year, erect, stiff stem develops in second.
Leaves: Stem leaves lanceolate to elliptic, alternate, hairy with wavy, toothed edges, 4 to 12 inches long and 1/2 to 1-1/2 inches wide.
Inflorescence: Spike of a few erect flower buds atop a 1 to 1-1/2 inch long calyx tube with large hairy bract or leaf below each; yellow blossom 1 to 1-1/2 inches across, opening in the evening.
Bloom Period: June to September.
Fruit: Narrowly lanceolate-cylindrical, hairy capsules, 3/4 to 1-3/8 inches long and less than 1/4-inch wide.
References: "Flora of Colorado" by Jennifer Ackerfield, SEINet and E-Flora BC.
|BONAP Distribution Map
Map Color Key
© Tom Lebsack 2023
Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County