Taxon  Report   2131 
Cirsium fontinale  (E. Greene) Jepson  var. obispoense  J.T. Howell
Chorro creek bog thistle
Cirsium fontinale var. obispoense
© 2012 Lynn Robertson
Click on a photo to see it bigger.
Cirsium fontinale var. obispoense
© 2012 Lynn Robertson
Cirsium fontinale var. obispoense
© 2005 Dieter Wilken
Cirsium fontinale var. obispoense, a dicot, is a perennial herb that is native to California and is endemic (limited) to California.
It is included in the CNPS Inventory of Rare and Endangered Plants on list 1B.2 (rare, threatened, or endangered in CA and elsewhere).   7th Edition  /  8th Edition

It is listed by the State of California as Endangered and by the Federal Government as 'Endangered '.

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one or more occurrences
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Plant Characteristics
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Bloom Period
Cirsium fontinale var. obispoense
© 2012 Lynn Robertson
Genus: Cirsium
Parent Record Cirsium fontinale
Chaparral, Foothill Woodland, wetland-riparian
Habitat: seeps [CNPS Inventory]
Wetlands:Occurs almost always under natural conditions in wetlands [U.S. Fish & Wildlife Service.]
AFFINITY to serpentine soil:   6.1 (strict endemic)   [Safford et al 2005]
Distribution by County 

Add an Observation of  Cirsium fontinale var. obispoense

Name Status:
Accepted by TJM2 + CNPS + PLANTS + JM93
More information about  Cirsium fontinale var. obispoense
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

Original Publication citation (ITIS)


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]. 2017. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Apr 22, 2017).

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