Holocarpha is a small genus of flowering plants in the family Asteraceae. The genus contains four species of tarweeds, which are all endemic to California.Calflora taxon report, University of California, genus Holocarpha
Description Holocarpha are glandular, aromatic annual herbs bearing yellow flowers.Flora of North America, Holocarpha Greene, 1897.
SpeciesThe Plant List search for Holocarpha Holocarpha heermannii - Heermann's tarweed Holocarpha macradenia - Santa Cruz tarweed Holocarpha obconica - San Joaquin tarweed Holocarpha virgata - yellowflower tarweed
Other "tarweeds" Plants with the same common name, but in a different genus include: Santa Susana tarweed - Deinandra minthornii - (Asteraceae, endemic state-listed rare species in Simi Hills and nearby ranges)
References
External links Jepson Manual Treatment: Holocarpha United States Department of Agriculture Plants Profile: Holocarpha