Taxon  Report   2150    
Cirsium undulatum  (Nutt.) Spreng.
Wavy leaved thistle,  Wavyleaf thistle
Cirsium undulatum
© 2015 Richard Spellenberg
Photos from
CalPhotos / Calflora
Cirsium undulatum
© 2010 Lee Dittmann
Cirsium undulatum
© 2010 Lee Dittmann
Cirsium undulatum, a dicot, is a perennial herb that is not native to California; it was introduced from elsewhere and naturalized in the wild.

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 undulatum
© 2010 Lee Dittmann
Genus: Cirsium
Wetlands: Occurs usually in non wetlands, occasionally in wetlands
Name Status:
Accepted by JEF + PLANTS

Alternate Names:
ICPN: Cirsium undulatum var. undulatum
More information about  Cirsium undulatum
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).