Holocarpha
Encyclopedia
Holocarpha is a small genus of flowering plants in the daisy family
. The genus contains four species of tarweeds which are all endemic to California
.
There are four species:
Asteraceae
The Asteraceae or Compositae , is an exceedingly large and widespread family of vascular plants. The group has more than 22,750 currently accepted species, spread across 1620 genera and 12 subfamilies...
. The genus contains four species of tarweeds which are all endemic to California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...
.
Description
Holocarpha are glandular, aromatic annual herbs bearing yellow flowers.There are four species:
- Holocarpha heermanniiHolocarpha heermanniiHolocarpha heermannii is a species of flowering plant in the aster family known by the common name Heermann's tarweed.-Description:...
- Heermann's tarweed - Holocarpha macradeniaSanta Cruz TarweedThe Santa Cruz Tarweed is an endangered plant endemic to certain coastal terraces in Northern California. Its principal range is in Santa Cruz County and Monterey County, but smaller colonies have been found slightly to the north...
- Santa Cruz tarweed - Holocarpha obconica - San Joaquin tarweed
- Holocarpha virgataHolocarpha virgataHolocarpha virgata is a species of flowering plant in the aster family known by the common name yellowflower tarweed.-Description:Holocarpha virgata is an annual herb producing an erect stem 20 centimeters to over one meter tall. It has many branches and is lined with oily glands and hairs...
- yellowflower tarweed
Other "tarweeds"
Plants with the same common name, but in a different genus include:- Santa Susana tarweed - DeinandraDeinandraDeinandra is a genus of tarweeds in the daisy family. Such a genus is not recognized as distinct by all authorities; its species are often treated as members of genus Hemizonia, or as synonyms between the two genera.-Range:...
minthornii - (Asteraceae, endemic state-listed rare species in Simi HillsSimi HillsThe Simi Hills are a low rocky mountain range of the Transverse Ranges, located in eastern Ventura County and western Los Angeles County, of southern California, United States.-Geography:...
and nearby ranges)