Hemizonia congesta subsp. calyculata

Mendocino tarplant, Mendocino Tarplant

Family: Asteraceae · Type: annual · Native

Conservation status: CNPS 4.3

Mendocino tarplant is a California native annual herb found in the northern California Coast Ranges in grassland and woodland openings at elevations of 200 to 1,400 meters. Flowering from July to November, this plant produces white ray flowers with purple veins and yellow disk flowers in compact clusters. Growing with glandular, bristly stems up to 50 centimeters tall, it develops densely clustered side branches with nearly sessile flower heads. Its leaves are minutely bristly, coarse-hairy, and densely covered with stalked glands, with distal leaves being particularly glandular. The fruit is small, with a width approximately half its length.

Habitat: Clay soils, grassland, openings in woodland

Bloom period: Jul-Nov

Elevation: 200-1400 m

Bioregions: NCoR.

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