Taxon  Report   2117    
Cirsium arizonicum  (A. Gray) Petr.
Arizona thistle
Cirsium arizonicum
© 2016 Steve Matson
Photos from
CalPhotos / Calflora
Cirsium arizonicum
© 2017 Neal Kramer
Cirsium arizonicum
© 2007 Steven Thorsted
Cirsium arizonicum, a dicot, is a perennial herb that is native to California, is also found outside of California, but is confined to western North America.

Interactive Distribution Map

Observation Hotline
(observation details)

point, line, or polygon

Plant Characteristics
and Associations

Bloom Period
Cirsium arizonicum
© 2014 John Doyen
Genus: Cirsium
Subspecies and Varieties:
Communities: Subalpine Forest

Arid West: Occurs usually in non wetlands, occasionally in wetlands
Mountains, Valleys and Coast: Equally likely to occur in wetlands and non wetlands

Habitat: slopes

Name Status:
Accepted by JEF + PLANTS

Alternate Names:
PLANTS: Cirsium arizonicum var. nidulum
PLANTS: Cirsium nidulum
PLANTS: Cnicus arizonicus
. . .
More information about  Cirsium arizonicum
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 23, 2019).