CNPS Inventory Plant Detail

Cirsium arizonicum var. tenuisectum

Common Name:	desert mountain thistle
Family:	Asteraceae
Synonyms:
Element Code:	PDAST2E083
Full Name:	Cirsium arizonicum (A. Gray) Petrak var. tenuisectum Keil
USDA PLANTS Symbol:

Biology
Lifeform: perennial herb Blooming Period: June - November Habitat: rocky, disturbed areas, often roadsides. • Joshua tree woodland • Mojavean desert scrub • Pinyon and juniper woodland

Rarity Status
CA Rare Plant Rank: 1B.2 Rare, threatened, or endangered in California and elsewhere .2: Fairly endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S2 S2: Imperiled. Global Rank: G5T2 T2: Imperiled. G5: (species) Secure, considering populations outside California.

Occurrence Data from DFG
California Natural Diversity Database

Historic >20 yrs	Recent <=20 yrs
1	6

Presence:

Present Extant	Possibly Extirpated	Extirpated
7	0	0

Notes

Known in California 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.
To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
Date Added: 2006-12-27
Last Update: 2010-03-15

Location

Elevation: 1500 - 2800 meters

California Endemic: no

States: California, Nevada

California Counties and Islands: name (code)
San Bernardino (SBD)

Quads: name (DWR code) USGS code
Pinto Valley (200A) 35115B3, Ivanpah (225D) 35115C3, Clark Mtn. (249D) 35115E5

Notes:

Definitions of codes preceding a county and/or quad:
*		Presumed extirpated
?		Uncertain about distribution or identity
?*		Uncertain about distribution, but presumed extirpated if once present
(?)		Occurrence confirmed, but possibly extirpated

Species may be present in other areas where conditions are favorable.

Presumed Extant

Presumed Extirpated or Unknown

3206

Links to Leading Resources of Taxon Information
USDA PLANTS Calflora CalPhotos Consortium of California Herbaria California Department of Fish and Game: CNDDB Quick Viewer

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-01a). California Native Plant Society. Sacramento, CA. Accessed on .

-115.25,35.25