CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record cirsium_arizonicum_var._tenuisectum - Wed, Dec. 1, 2021, 23:03 ET b
Cirsium arizonicum var. tenuisectum
common namedesert mountain thistle
CalPhotos image
more photos
©   Follow image link for photo data, and for images listed as "Cirsium nudum".
Link to images listed as "Cirsium arizonicum var. tenuisectum"
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
G5T2      ranking system key
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (3):
Pinto Valley (200A) 3511523, Ivanpah (225D) 3511533, Clark Mountain (249D) 3511555
quad data info

Counties, states, regions:
San Bernardino (SBD), Nevada (NV)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Joshua tree "woodland" (JTWld)
•Mojavean desert scrub (MDScr)
•Pinyon and juniper woodland (PJWld)/rocky, disturbed areas, often roadsides
blooming period Jun-Nov  
elevation range1500 - 2800 meters
Known in CA only from the New York Mountains of San Bernardino County. The name Cirsium nidulum has long been misapplied to this species. May be distinctive enough to be its own taxon and not a variety of Cirsium arizonicum. See SIDA 21(1): 210 (2004) for original description.
full nameCirsium arizonicum (A. Gray) Petrak var. tenuisectum Keil
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym   Element Code  PDAST2E083
Jepson Online Jepson Interchange  Jepson Manual and other resources
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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 Wed, Dec. 1, 2021 from

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