Taxon  Report   2146 
Cirsium quercetorum  (A. Gray) Jeps.
Alameda county thistle,  Brownie thistle
Cirsium quercetorum
© 2018 Abbot Chambers
More photos from
CalPhotos / Calflora
Cirsium quercetorum
© 2010 Zoya Akulova
Cirsium quercetorum
© 2010 Robert Steers/NPS
Cirsium quercetorum, a dicot, is an annual or perennial herb that is native to California and is endemic (limited) to California.

Interactive Distribution Map

Observation Hotline
(observation details + photos)

point, line, or polygon

Plant Characteristics
and Associations

Bloom Period
Cirsium quercetorum
© 2007 Neal Kramer
Genus: Cirsium
Mixed Evergreen Forest, Coastal Prairie
Distribution by County 

Add an Observation of  Cirsium quercetorum

Name Status:
Accepted by JEF + PLANTS + JM93
Alternate Names:
(according to)

PLANTS: Cirsium quercetorum var. mendocinum
PLANTS: Cirsium quercetorum var. quercetorum
PLANTS: Cirsium quercetorum var. walkerianum
PLANTS: Cirsium quercetorum var. xerolepis
ICPN + PLANTS: Cirsium walkerianum
More information about  Cirsium quercetorum
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on CalPhotos / Google Images
Photos on

Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation


Search the International Plants Names Index

Search (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

website references from Google

Suggested Citation
Calflora: Information on California plants for education, research and conservation,
with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria.
[web application]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Jun 17, 2018).

The information on this page comes from diverse sources. None of the links are sponsored.