Holocarpha Explained

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]

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]

External links

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

Notes and References

1. http://www.calflora.org/cgi-bin/specieslist.cgi?where-genus=Holocarpha Calflora taxon report, University of California, genus Holocarpha
2. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=115607 Flora of North America, Holocarpha Greene, 1897.
3. http://www.theplantlist.org/tpl1.1/search?q=Holocarpha The Plant List search for Holocarpha
4. Web site: Santa Susana tarplant . www.calflora.net . 2010-08-30.