Taxon Details

Poa lettermanii

Letterman's blue grass

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Taxon Summary:

Poa lettermanii, commonly known as Letterman's blue grass, is a perennial herb in the Poaceae that is found in California and elsewhere. It occurs within Alpine boulder and rock field (sandy, and rocky), growing at elevations from 3500 to 4265 meters. Poa lettermanii is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.

Classification

Scientific Name: Poa lettermanii Vasey
Common Name: Letterman's blue grass
Family:	Poaceae
Element Code:	PMPOA4Z1H0
USDA Plants Symbol:	POLE3
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.3
Fed List:	None
State List:	None
Global Rank:	G4
State Rank:	S3
Other Status:
CRPR Changes:
Add Date:	2001-01-01
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jul-Aug

Elevation:
3500 - 4265 meters
11485 - 13995 feet

General Habitats:

Alpine boulder and rock field (sandy, rocky)

Microhabitat Details:

Microhabitat:

Notes

Notes: See Contributions from the U.S. National Herbarium 1:273 (1893) for original description, and Systematic Botany 16(3):522-523 (1991) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	0
	Total EOs	% of EOs
EOs with Threat Listed:	0	%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					11
A	B	C	D	X	U
0	0	0	0	0	11

Occurrence Status:
Historical >20 Years	10
Recent <=20 Years	1

Presence:
Presumed Extant	11
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

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

California Counties and Islands: Name (Code)
Fresno (FRE), Inyo (INY), Mono (MNO), Tulare (TUL)

Quads: Name (Quad Code)
Aberdeen (3611883), Cirque Peak (3611842), Juniper Mtn. (3711862), Kearsarge Peak (3611873), Mount Tom (3711836), Mount Whitney (3611853), Mt. Barcroft (3711852), Mt. Clarence King (3611874), Mt. Darwin (3711826), Mt. Hilgard (3711837), Mt. Thompson (3711825), Mt. Williamson (3611863), North Palisade (3711815), White Mtn. Peak (3711863)

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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CNPS Rare Plant Inventory