Erigeron serpentinus

Serpentine daisy

Family: Asteraceae · Type: perennial · Native

Conservation status: CNPS 1B.2

Serpentine daisy is a rare (CNPS 1B.2) California native perennial found in northwestern Sonoma County in serpentine scrub at elevations of 400 to 600 meters. Flowering from May to August, this plant produces white flowers with a bluish tinge when dry, with ray flowers 7 to 8 millimeters long. Growing 30 to 45 centimeters tall with many stems branching near the tips, it emerges from a woody taproot with an upright, generally glabrous form. Its cauline leaves are linear to thread-like, 2 to 4 centimeters long, evenly sized and spaced along the stem with subtle ciliate edges. The flower heads are small and compact, with 1 to 4 heads per plant and involucres 9 to 12 millimeters in diameter.

Habitat: Serpentine scrub

Bloom period: May-Aug

Elevation: 400-600 m

Bioregions: NCoRO (nw Sonoma Co.).

California counties: Sonoma, Tuolumne

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