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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.[1]

Holocarpha
Holocarpha macradenia
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Subfamily:	Asteroideae
Tribe:	Madieae
Subtribe:	Madiinae
Genus:	Holocarpha Greene 1897

Description

Holocarpha are glandular, aromatic annual herbs bearing yellow flowers.[2]

Species[3][1]

• 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) [4]

References

External links

• Jepson Manual Treatment: Holocarpha
• United States Department of Agriculture Plants Profile: Holocarpha

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