Holocarpha
Encyclopedia
Holocarpha is a small genus of flowering plants in the daisy family
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 heermannii
    Holocarpha heermannii
    Holocarpha heermannii is a species of flowering plant in the aster family known by the common name Heermann's tarweed.-Description:...

    - Heermann's tarweed
  • Holocarpha macradenia
    Santa Cruz Tarweed
    The 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 virgata
    Holocarpha virgata
    Holocarpha 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 - Deinandra
    Deinandra
    Deinandra 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 Hills
    Simi Hills
    The 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
    )

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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