Taxon Report

Muhlenbergia emersleyi Vasey

bullgrass

Print Report

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:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Sep-Nov	Sep-Nov
Elevation:	1280-1570 (4200-5150)
General Habitats:	Chaparral
Microhabitat:	Gabbroic (often), Gravelly, Rocky
Microhabitat Details:

Conservation Status


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

Occurrence Data from the CNDDB


Total Occurrences:	2
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	2

Location


California Endemic: False
California Counties and Islands: Name (Code)
Riverside (RIV)
Quads: Name (Quad Code)
Butterfly Peak (3311655), Toro Peak (3311654)

Threat List Data from the CNDDB


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

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:

Selected References

CRPR List Addition on 2019-07-26

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].