''Holocarpha'' is a small genus of flowering plants in the family

Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...

. The genus contains four species of tarweeds, which are all

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

.Calflora taxon report, University of California, genus ''Holocarpha''
/ref>

Description

''Holocarpha'' are glandular, aromatic annual herbs bearing yellow flowers. ;Species *'' 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 ''Deinandra'' is a genus of flowering plants in the tribe Madieae within the family Asteraceae. Such a genus is not recognized as distinct by all authorities; its species are often treated as members of the genus '' Hemizonia''. Distribution ''D ...

minthornii'' - (''Asteraceae, endemic state-listed rare species in

Simi Hills The Simi Hills are a low rocky mountain range of the Transverse Ranges in eastern Ventura County and western Los Angeles County, of southern California, United States. Geography The Simi Hills are aligned east-west and run for , and average arou ...

and nearby ranges'')

References

External links

Jepson Manual Treatment: ''Holocarpha''United States Department of Agriculture Plants Profile: ''Holocarpha''
Asteraceae genera Endemic flora of California Madieae Flora without expected TNC conservation status {{Asteroideae-stub