Species Details

Agrostis humilis

mountain bent grass

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Classification

Scientific Name: Agrostis humilis Vasey
Common Name: mountain bent grass
Family:	Poaceae
Element Code:	PMPOA040P0
USDA Plants Symbol:	AGHU
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	2B.3
Fed List:	None
State List:	None
Global Rank:	G4Q
State Rank:	S2
Other Status:
CRPR Changes: changed from 2.3 to 2B.3 on 2013-02-22
Add Date:	1980-01-01
Date Edited:	2022-02-01

Ecology and Life History

Lifeform: perennial herb
Blooming Period: Jul-Sep
Elevation: 2670 - 3200 meters 8760 - 10500 feet
General Habitat: Alpine boulder and rock field Meadows and seeps Subalpine coniferous forest
General Micro Habitat:
Micro Habitat: Carbonate (sometimes)

Notes

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.
Threats:
Taxonomy:
Other:

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					20
A	B	C	D	X	U
0	2	1	0	0	17

Occurrence Status:
Historical >20 Years	8
Recent <=20 Years	12

Presence:
Presumed Extant	20
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Colorado (CO), Idaho (ID), Montana (MT), Nevada (NV), New Mexico (NM), Oregon (OR), Utah (UT), Washington (WA), Wyoming (WY)

California Counties and Islands: Name (Code)
Alpine (ALP), Inyo (INY), Madera (MAD), Mariposa (MPA), Mono (MNO), Placer (PLA), Tulare (TUL), Tuolumne (TUO)

Quads: Name (Quad Code)
Coyote Flat (3711824), Dunderberg Peak (3811913), Ebbetts Pass (3811957), Koip Peak (3711972), Lake Eleanor (3711987), Merced Peak (3711964), Moses Mtn. (3611836), Mount Dana (3711982), Quinn Peak (3611835), Silver City (3611846), Sonora Pass (3811936), Tahoe City (3912022), Tenaya Lake (3711974), Tioga Pass (3711983), Tower Peak (3811925), Vogelsang Peak (3711973), Yosemite Falls (3711975)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

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Counties Quads

Selected References

CNPS Status Review:

CRPR List Deletion on 2013-02-22