Taxon  Report   2148 
Cirsium rhothophilum  S.F. Blake
Surf thistle
Cirsium rhothophilum
© 1984 California Native Plant Society
Click on a photo to see it bigger.
CalPhotos
Cirsium rhothophilum, 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 Threatened .

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 rhothophilum
© 1984 California Native Plant Society
Family: ASTERACEAE  
Genus: Cirsium
Communities:
Coastal Strand, Coastal Sage Scrub
Habitat: dunes, coastal [CNPS Inventory]
Distribution by County 

Add an Observation of  Cirsium rhothophilum

Name Status:
Accepted by TJM2 + CNPS + PLANTS + JM93
Alternate Names:
(according to)

PLANTS: Cirsium maritimum
More information about  Cirsium rhothophilum
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)

USDA PLANTS Profile (CIRH)

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]. 2016. Berkeley, California: The Calflora Database [a non-profit organization].
Available: http://www.calflora.org/   (Accessed: Dec 10, 2016).

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