Camissoniopsis hardhamiae

Hardham's evening-primrose

Family: Onagraceae · Type: annual · Native

Conservation status: CNPS 1B.2

Hardham's evening-primrose is a rare (CNPS 1B.2) California native annual found in the southern Coast Ranges of Monterey and San Luis Obispo counties in sandy limestone soils of disturbed oak woodland at elevations of 240 to 600 meters. Flowering from March to May, this plant produces pale yellow flowers with petals 2 to 4 millimeters long. Growing with erect stems less than 60 centimeters tall and spreading hairs, it develops a robust, rosetted habit. Its cauline leaves are widely lanceolate to narrowly ovate, 10 to 120 millimeters long, with minute teeth and nearly sessile attachment. The elongated fruit is 13 to 25 millimeters long, slightly cylindrical, and can dry with a subtle twist.

Habitat: Sandy soil, limestone, disturbed oak woodland

Bloom period: Mar-May

Elevation: 240-600 m

Bioregions: SCoR (Monterey, San Luis Obispo cos.).

California counties: Monterey, San Luis Obispo, Los Angeles

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