CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record cirsium_crassicaule - Wed, Dec. 8, 2021, 04:44 ET b
Cirsium crassicaule
common nameslough thistle
CalPhotos image
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life formannual/perennial herb
CA Rare Plant Rank
List 1B.1
LIST 1B: Rare, threatened, or endangered in California and elsewhere.
     0.1: Seriously endangered in California
state rank
S1      ranking system key
global rank
G1     G1: Less than 6 occurrences OR less than 1,000 individuals OR less than 2,000 acres.
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (9):
Tupman (241D) 3511933, Wasco SW (264C) 3511954, Lost Hills NE (265A) 3511965, Lost Hills NW (265B) 3511966, Semitropic (265D) 3511955, Lone Tree Well (289C) 3511976, Hacienda Ranch (289D)?* 3511975, Vernalis (444A) 3712163, Lathrop (462D) 3712173
quad data info

Counties, states, regions:
Kings (KNG), Kern (KRN), San Joaquin (SJQ)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Chenopod scrub (ChScr)
•Marshes and swamps (MshSw)(sloughs)
•Riparian scrub (RpScr)
blooming period May-Aug  
elevation range3 - 100 meters
Threatened by agriculture and non-native plants. Population sizes fluctuate widely.
full nameCirsium crassicaule (Greene) Jeps.
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  CICR Element Code  PDAST2E0U0
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). 2018. Inventory of Rare and Endangered Plants (online edition, v7-18mar). California Native Plant Society. Sacramento, CA. Accessed on Wed, Dec. 8, 2021 from

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