Calflora
Taxon  Report   2121 
Cirsium ciliolatum  (L. F. Hend.) J. T. Howell
Ashland thistle
Cirsium ciliolatum
© 2017 Gerald Carr
More photos from
CalPhotos / Calflora
Cirsium ciliolatum
© 2017 Gerald Carr
Cirsium ciliolatum, a dicot, is a perennial herb that is native to California, Oregon.
CNPS Rare Plant Rank: 2B.1 (rare, threatened, or endangered in CA; common elsewhere).   8th Edition

It is listed by the State of California as Endangered .

Interactive Distribution Map


Observation Hotline
(observation details + photos)



point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations



Bloom Period
Cirsium ciliolatum
© 2017 Gerald Carr
Family: ASTERACEAE  
Genus: Cirsium
Communities:
Valley Grassland, Foothill Woodland
Distribution by County 

Add an Observation of  Cirsium ciliolatum

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

PLANTS: Cirsium botrys
PLANTS: Cirsium howellii
More information about  Cirsium ciliolatum
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on CalPhotos / Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation

USDA PLANTS Profile (CICI)

Search the International Plants Names Index

Search efloras.org (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: http://www.calflora.org/   (Accessed: Aug 19, 2018).

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