Taxon Details

Muhlenbergia emersleyi

bullgrass

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Taxon Summary:

Muhlenbergia emersleyi, commonly known as bullgrass, is a perennial herb in the Poaceae that is found in California and elsewhere. It occurs within Chaparral, growing at elevations from 1280 to 1570 meters. Muhlenbergia emersleyi is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Muhlenbergia emersleyi Vasey
Common Name: bullgrass
Family:	Poaceae
Element Code:	PMPOA480K0
USDA Plants Symbol:
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.2
Fed List:	None
State List:	None
Global Rank:	G5
State Rank:	S1
Other Status:
CRPR Changes: added to 2B.2 on 2019-07-26
Add Date:	2019-07-26
Date Edited:	2024-08-06

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Sep-Nov

Elevation:
1280 - 1570 meters
4200 - 5150 feet

General Habitats:

Chaparral (montane)

Microhabitat Details:

Microhabitat:

Gabbroic (often)
Gravelly
Rocky

Notes

Notes: Discovered in CA by Keir Morse in 2016. See Contributions from the United States National Herbarium 3(1): 66 (1892) for original description, and American Journal of Botany 97(9):1532-1554 for phylogenetic classification.
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:					2
A	B	C	D	X	U
0	0	0	0	0	2

Occurrence Status:
Historical >20 Years	0
Recent <=20 Years	2

Presence:
Presumed Extant	2
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
Arizona (AZ), Baja California (BA), California (CA), New Mexico (NM), Sonora, Mexico (SO), Texas (TX)

California Counties and Islands: Name (Code)
Riverside (RIV)

Quads: Name (Quad Code)
Butterfly Peak (3311655), Toro Peak (3311654)

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