CNPS Inventory Plant Detail

Boechera tiehmii

Common Name:	Tiehm's rockcress
Family:	Brassicaceae
Synonyms:	Arabis tiehmii
Element Code:	PDBRA06280
Full Name:	Boechera tiehmii (Rollins) Al-Shehbaz
USDA PLANTS Symbol:	ARTI2

Biology
Lifeform: perennial herb Blooming Period: July - August Habitat: • Alpine boulder and rock field (granitic)

Rarity Status
Rare Plant Rank: 1B.3 Rare, threatened, or endangered in California and elsewhere .3: Not very endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S2.3 S2: Imperiled. .3: No current threats known. Global Rank: G2 G2: Imperiled.

Occurrence Data from DFG
California Natural Diversity Database

Historic >20 yrs	Recent <=20 yrs
9	0

Presence:

Present Extant	Possibly Extirpated	Extirpated
9	0	0

Notes
Known in CA from approximately ten occurrences near Tioga Crest. On watch list in NV, where known from two occurrences. See Journal of the Arnold Arboretum 64:496 (1983) 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: 1988-01-01 Last Update: 2012-04-25

Location

Elevation: 2970 - 3590 meters

California Endemic: no

States: California, Nevada

California Counties and Islands: name (code)
Mono (MNO)

Quads: name (DWR code) USGS code
Mount Dana (453B) 37119H2, Tioga Pass (454A) 37119H3, Dunderberg Peak (471D) 38119A3

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

201

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

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society. Sacramento, CA. http://www.rareplants.cnps.org. Accessed .

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