CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record cirsium_occidentale_var._compactum - Mon, Dec. 6, 2021, 21:40 ET b
Cirsium occidentale var. compactum
common namecompact cobwebby thistle
CalPhotos image
more photos
Gerald and Buff Corsi © 1999 California Academy of Sciences  Follow image link for photo data.
life formperennial herb
CA Rare Plant Rank
List 1B.2
LIST 1B: Rare, threatened, or endangered in California and elsewhere.
     0.2: Fairly endangered in California
state rank
S2      ranking system key
global rank
G3G4T2   G3G4: Intermediate between G3 and G4
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (16):
Point Sal (196B) 3412086, Cayucos (247B) 3512048, San Simeon (271B) 3512162, Pico Creek (271C) 3512152, Cambria (271D) 3512151, Piedras Blancas (272A) 3512163, Pfeiffer Point (320E) 3612127, Point Sur (344C)? 3612138, Big Sur (344D) 3612137, San Francisco South (448B)* 3712264, Santa Catalina Island East (SCTE), San Miguel Island East (SMIE), San Miguel Island West (SMIW), Santa Rosa Island North (SRON), Santa Rosa Island South (SROS), Santa Rosa Island West (SROW)
quad data info

Counties, states, regions:
Los Angeles (LAX), Monterey (MNT)?, Santa Barbara (SBA), San Francisco (SFO)*, San Luis Obispo (SLO)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Chaparral (Chprl)
•Coastal dunes (CoDns)
•Coastal prairie (CoPrr)
•Coastal scrub (CoScr)
blooming period Apr-Jun  
elevation range5 - 150 meters
Known from fewer than twenty occurrences. Threatened by grazing and insect predation, and potentially by road construction and development. Some inland plants weakly separated from var. occidentale. Compact, low-growing plants from MNT Co. (344C) are probably not var. compactum.
full nameCirsium occidentale (Nutt.) Jeps. var. compactum Hoov.
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  CIOCC2 Element Code  PDAST2E1Z1
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
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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 Mon, Dec. 6, 2021 from

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