CNPS Inventory Plant Detail

Boechera cobrensis

Common Name:	Masonic rockcress
Family:	Brassicaceae
Synonyms:
Element Code:	PDBRA06080
Full Name:	Boechera cobrensis (M.E. Jones) Dorn
USDA PLANTS Symbol:	ARCO

Biology
Lifeform: perennial herb Blooming Period: June - July Habitat: sandy. • Great Basin scrub • Pinyon and juniper woodland

Rarity Status
CA Rare Plant Rank: 2.3 Rare, threatened, or endangered in California, but more common elsewhere .3: Not very endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S1S2 S1: Critically Imperiled. S2: Imperiled. Global Rank: G5 G5: Secure, considering populations outside California.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 6
Element Occurrence Ranks:

A B C D X U

0 0 0 0 0 6

Population Status:

Historic >20 yrs	Recent <=20 yrs
6	0

Presence:

Present Extant	Possibly Extirpated	Extirpated
6	0	0

Notes
Possibly threatened by development and road maintenance. See Rhodora 43(511):455-457 (1941) for taxonomic treatment. To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page. Date Added: 1974-01-01 Last Update: 2012-11-06

Location

Elevation: 1375 - 3105 meters

California Endemic: no

States: California, Idaho, Nevada, Oregon, Wyoming

California Counties and Islands: name (code)
Mono (MNO), Modoc (MOD)

Quads: name (DWR code) USGS code
Watterson Canyon (433B) 37118F6, Whitmore Hot Springs (434A) 37118F7, Glass Mountain (451C) 37118G6, Dexter Canyon (452D) 37118G7, Bodie (470A) 38119B1, Big Alkali (470B) 38119B2, Negit Island (470D) 38119A1, Aurora (486C) 38118C8, Bridgeport (487C) 38119C2, Eagle Peak (690C) 41120C2

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

185

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 .

-119.0,38.125