CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-16sep 9-2-16
Status: record cirsium_ciliolatum - Tue, Oct. 25, 2016 13:15 ET c
Cirsium ciliolatum
common nameAshland thistle
CalPhotos image
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life formperennial herb
CA Rare Plant Rank
List 2B.1
LIST 2B: Rare, threatened, or endangered in California, but more common elsewhere.
     0.1: Seriously endangered in California
state rank
S1      ranking system key
global rank
G3     G3: 21-80 occurrences or 3,000-10,000 individuals OR 10,000-50,000 acres
Where did the "RED" code go?
CA state listingEndangered  09/82
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (3):
Duzel Rock (717C) 4112256, Bogus Mountain (733C) 4112274, Dewey Gulch (733D) 4112273
quad data info

Counties, states, regions:
Siskiyou (SIS), Oregon (OR)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Cismontane woodland (CmWld)
•Valley and foothill grassland (VFGrs)
blooming period Jun-Aug  
elevation range800 - 1400 meters
Known in CA from fewer than ten occurrences. Threatened by agriculture and road maintenance. Possibly threatened by grazing. On review list in OR. See Bulletin of the Torrey Botanical Club 27:348 (1900) for original description.
full nameCirsium ciliolatum (Henders.) J.T. Howell
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  CICI Element Code  PDAST2E0P0
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
search Google CNPS website    search Google entire web

Suggested citation: California Native Plant Society (CNPS). 2016. Inventory of Rare and Endangered Plants (online edition, v7-16sep). California Native Plant Society. Sacramento, CA. Accessed on Tue, Oct. 25, 2016 from

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