Distribution: Sporadic in central and eastern Washington; widespread throughout western U.S. and central Canada.
Habitat: Dry slopes and forest openings, rock outcroppings, and talus.
Flowers: May-July
Origin: Native
Growth Duration: Perennial
Conservation Status: Sensitive in Washington (WANHP)
Pollination: Bees, moths
[none provided]
Publication: Cat. Pl. Upper Louisiana no. 53 [pre-Aug 1813]. 1813.
Oenothera caespitosa Nutt. var. caespitosa, orthographic variant [HC]
Oenothera caespitosa Nutt. var. montana (Nutt.) Durand, orthographic variant [HC]
Oenothera caespitosa Nutt. var. purpurea (S. Watson) Munz, orthographic variant [HC]
Oenothera cespitosa Nutt. ssp. montana (Nutt.) Munz
Oenothera cespitosa Nutt. ssp. purpurea (S. Watson) Munz
PNW Herbaria: Specimen records of Oenothera cespitosa ssp. cespitosa in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Oenothera cespitosa ssp. cespitosa checklist entry.
OregonFlora: Oenothera cespitosa ssp. cespitosa information.
E-Flora BC: Oenothera cespitosa ssp. cespitosa atlas page.
CalPhotos: Oenothera cespitosa ssp. cespitosa photos.
USDA Plants: Oenothera cespitosa ssp. cespitosa information.
