Harmonia hallii

Hall's harmonia

Family: Asteraceae · Type: annual · Native

Conservation status: CNPS 1B.2

Hall's harmonia is a rare (CNPS 1B.2) California native annual found in southern North Coast Ranges Interior in open sites and disturbed areas within serpentine chaparral at elevations of 500 to 1,000 meters. Flowering from April to June, this plant produces white ray flowers 2 to 5 millimeters long with disk flowers arranged in compact heads. Growing with delicate stems 5 to 18 centimeters tall, the plant features a central stem with proximal unbranched sections shorter than its flowering branches. Its leaves are densely clustered near the stem's distal regions, concentrated mostly on the central stem and immediately adjacent to flower-supporting branches. The flower heads are notable for having 3 to 6 coarsely hairy phyllaries, with ray and disk flowers creating a distinctive compact inflorescence.

Habitat: Open sites, disturbed areas in serpentine chaparral

Bloom period: Apr-Jun

Elevation: 500-1000 m

Bioregions: s NCoRI.

California counties: Napa, Colusa, Lake, Tehama

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