CNPS Inventory Plant Detail

Agrostis humilis

Common Name:	mountain bent grass
Family:	Poaceae
Synonyms:
Element Code:	PMPOA040P0
Full Name:	Agrostis humilis Vasey
USDA PLANTS Symbol:	AGHU

Biology
Lifeform: perennial herb Blooming Period: July - September Habitat: Sometimes carbonate.. • Alpine boulder and rock field • Meadows and seeps • Subalpine coniferous forest

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: S2 S2: Imperiled. Global Rank: G4Q G4: Apparently secure, considering populations outside California. (There are taxonomic questions associated with this name)

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 20
Element Occurrence Ranks:

A B C D X U

0 2 1 0 0 17

Population Status:

Historic >20 yrs	Recent <=20 yrs
8	12

Presence:

Present Extant	Possibly Extirpated	Extirpated
20	0	0

Notes

To be expected elsewhere in CA; need field surveys. Threatened by foot traffic and vehicles. Possibly threatened by grazing and trampling. Similar to A. variabilis and intergrades with A. thurberiana. Different circumscription here than TJM 2, which includes A. thurberiana (a common taxon) as a synonym. See Bulletin of the Torrey Botanical Club 10(2):21(1883) for original description and Madroño 25(4):232 (1978) for first CA record.
To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
Date Added: 1980-01-01
Last Update: 2013-03-05

Location

Elevation: 2670 - 3200 meters

California Endemic: no

States: California, Colorado, Idaho, !MT, New Mexico, Nevada, Oregon, Utah, Washington, Wyoming

California Counties and Islands: name (code)
Alpine (ALP), Madera (MAD), Mono (MNO), Mariposa (MPA), Tuolumne (TUO)

Quads: name (DWR code) USGS code
Merced Peak (436B) 37119F4, Koip Peak (453C) 37119G2, Tioga Pass (454A) 37119H3, Falls Ridge (454B) 37119H4, Tenaya Lake (454C) 37119G4, Vogelsang Peak (454D) 37119G3, Yosemite Falls (455D) 37119G5, Lake Eleanor (456A) 37119H7, Dunderberg Peak (471D) 38119A3, Tower Peak (472A) 38119B5, Sonora Pass (489C) 38119C6, Ebbetts Pass (506D) 38119E7

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

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 .

-119.375,37.875