Camissonia integrifolia

Kern river evening-primrose, Kern River Evening-Primrose

Family: Onagraceae · Type: annual · Native

Conservation status: CNPS 1B.3

Kern river evening-primrose is a rare (CNPS 1B.3) California native annual found in southern Sierra Nevada Foothills in the Kern River area of Kern County on sagebrush slopes at elevations of 700 to 1,000 meters. Flowering in May, this plant produces yellow flowers that fade to reddish with occasional small basal spots. Growing with slender, wiry stems less than 30 centimeters tall that peel and are mostly hairless except for a dense grayish strigose inflorescence. Its linear leaves measure 10 to 30 millimeters long, typically entire with zero to two small teeth. The distinctive elongated fruit is 45 to 60 millimeters long, slightly swollen with seeds and appearing straight or slightly wavy.

Habitat: Generally sagebrush slopes

Bloom period: May

Elevation: 700-1000 m

Bioregions: s SNF (Kern River area, Kern Co.).

California counties: Kern

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