Oenothera villosa subsp. strigosa

Family: Onagraceae · Type: biennial · Native

Large-flowered evening primrose is a California native biennial found in the Klamath Ranges, northern California Interior Ranges, Cascade Range highlands, and North Coast ranges in moist forest openings at elevations of 500 to 2,000 meters. Flowering from July to August, this plant produces bright yellow flowers that fade to pale orange, with petals 7 to 20 millimeters long. Growing with erect stems 50 to 200 centimeters tall, covered in fine strigose hairs and often featuring distinctive red-based spreading hairs. Its lance-shaped leaves are 10 to 30 centimeters long, ranging from entire to minutely toothed, with a notable strigose texture. The elongated cylindrical fruit measures 20 to 35 millimeters long, containing small angled seeds with irregular pitting.

Habitat: Moist openings in forest

Bloom period: Jul-Aug

Elevation: especially 500-2000 m

Bioregions: KR, NCoRI (Tehama Co.), CaRH (Plumas Co.), MP

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Jepson eFlora, Cal-IPC, and more.