Centromadia parryi subsp. congdonii

Congdon's tarplant, Congdon's Tarplant

Family: Asteraceae · Type: perennial · Native

Conservation status: CNPS 1B.1

Congdon's tarplant is a rare (CNPS 1B.1) California native perennial found in central western California in terraces, swales, floodplains, and grasslands at elevations below 300 meters. Flowering from June to October, this plant produces yellow disk flowers with rays 2.5 to 3 millimeters long in compact clusters. Growing to moderate height with erect stems that are seldom glandular but can have coarse hairs, it forms a characteristic clumped appearance in open grassland environments. Its leaves are glabrous or slightly hairy, with occasional minute yellow glandular spots among the nonglandular hairs. The plant's distinctive yellow disk flowers with brown-tinged anthers make it a notable member of California's grassland ecosystems.

Habitat: Terraces, swales, floodplains, grassland, disturbed sites

Bloom period: Jun-Oct

Elevation: < 300 m

Bioregions: CW.

California counties: Alameda, Monterey, San Luis Obispo, Santa Clara, Santa Cruz, Solano, Contra Costa

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