Taxon  Report   2129    
Cirsium fontinale  (Greene) Jeps.  var. campylon  (H. Sharsm.) D. J. Keil & C. E. Turner
Mt hamilton thistle,  Mt. hamilton thistle
Cirsium fontinale var. campylon
© 2004 David A. Tharp
Photos from
CalPhotos / Calflora
Cirsium fontinale var. campylon
© 2014 Chris Winchell
Cirsium fontinale var. campylon
© 2012 Aaron Schusteff
Cirsium fontinale var. campylon, a dicot, is a perennial herb that is native to California, is endemic (limited) to California.
also called Cirsium campylon
California Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).   8th Edition

Interactive Distribution Map

Observation Hotline
(observation details)

point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations

Bloom Period
Cirsium fontinale var. campylon
© 2014 Julia King
Genus: Cirsium
Parent: Cirsium fontinale
Communities: Chaparral, Valley Grassland, Foothill Woodland, wetland-riparian

Wetlands: Occurs in wetlands

Serpentine affinity: 5.9; (strict endemic)

Habitat: seeps

Name Status:
Accepted by JEF + CNPS + PLANTS

Alternate Names:
CNPS + PLANTS: Cirsium campylon
More information about  Cirsium fontinale var. campylon
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation


Search the International Plants Names Index

Search (Flora of North America)

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]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Jan 21, 2019).