Cirsium quercetorum
{{Short description|Species of thistle}}
{{speciesbox
|image = Cirsium quercetorum.jpg
|genus = Cirsium
|species = quercetorum
|synonyms_ref = [http://www.theplantlist.org/tpl1.1/record/gcc-124406 The Plant List, Cirsium quercetorum (A.Gray) Jeps. ]
|synonyms =
- Carduus quercetorum (A.Gray) Greene
- Cirsium walkerianum Petr.
- Cnicus quercetorum A.Gray
| status = G3
| status_system = TNC
}}
Cirsium quercetorum is a species of thistle endemic to coastal California, its common names include brownie thistle and Alameda thistle.[http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Cirsium+quercetorum Calflora taxon report, University of California, Cirsium quercetorum (A. Gray) Jepson Alameda County thistle, brownie thistle ]
Distribution
Cirsium quercetorum is endemic to the Outer California Coast Ranges from Santa Barbara's Point Conception north into the San Francisco Bay Area and up the North Coast as far as Humboldt County. This is a common plant found in coastal grasslands and open woodlands.
Description
The perennial Cirsium quercetorum plant usually grows clumped low to the ground, less than 20 cm (8 inches) tall, but occasionally the plant grows erect and can reach 90 cm (36 inches) in height. It has spiny lobed toothy leaves and spiny flower heads with brownish ivory-tan white to purple disc florets but no ray florets.[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066396 Flora of North America, Brownie or Alameda County thistle , Cirsium quercetorum (A. Gray) Jepson]
References
{{Reflist}}
External links
- {{Commons category-inline|Cirsium quercetorum}}
- C. Michael Hogan ed. 2010. [http://www.eol.org/pages/468323 Cirsium quercetorum. Encyclopedia of Life]
- [http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?609,963,994 Jepson Manual Treatment — Cirsium quercetorum]
- [http://calphotos.berkeley.edu/cgi/img_query?where-genre=Plant&where-taxon=Cirsium+quercetorum Cirsium quercetorum— Calphotos Photo gallery, University of California]
{{Taxonbar|from=Q5122074}}
Category:Endemic flora of California
Category:Plants described in 1874
Category:Natural history of the California chaparral and woodlands
Category:Natural history of the California Coast Ranges
Category:Natural history of the San Francisco Bay Area
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