Oenothera villosa ssp. villosa

(Hairy Evening Primrose)

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Oenothera villosa ssp. villosa, Pawnee Buttes, Weld Co. 7863

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Oenothera villosa ssp. villosa, Pawnee Buttes, Weld Co. 7849

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Oenothera villosa ssp. villosa, Pawnee Buttes, Weld Co. 7861

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Oenothera villosa ssp. villosa, Pawnee Buttes, Weld Co. 7858

Scientific Name Oenothera villosa ssp. villosa USDA PLANTS Symbol OEVIV
Common Name Hairy Evening Primrose, Common Evening Primrose ITIS Taxonomic Serial No. 524369
Family Onagraceae (Evening Primrose) SEINet
Reference
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Description Life zones and habitat: Plains to montane (3500 to 8700 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 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 aging to orange, opening in the evening; densely hairy sepals.
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
Colorado Status:
Native

© Tom Lebsack 2022

Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County