Hemizonia congesta subsp. lutescens

Family: Asteraceae · Type: annual · Native

Congested tarweed is a California native annual found in southern Northern Coast, southern Northern Coast Ranges, northern Central Coast, and northern San Francisco Bay area grasslands, barrens, and openings in chaparral and woodland, often on serpentine at elevations below 500 meters. Flowering from April to December, this plant produces yellow flowers with purple-veined ray flowers in compact clusters. Growing with short to shaggy hairy stems that can be glandular, it forms delicate panicle-like clusters of flower heads. Its leaves are short-hairy, somewhat shaggy, with distal leaves becoming increasingly glandular. The fruit is relatively narrow, measuring less than two-thirds its length.

Habitat: Grassland, barrens, openings in chaparral and woodland, often on serpentine

Bloom period: Apr-Dec

Elevation: < 500 m

Bioregions: s NCo, s NCoRO, n CCo, n SnFrB.

California counties: Sonoma, Marin, Alameda, Contra Costa, Napa, Solano, Mendocino, Monterey

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