Taxon Report

Mentzelia inyoensis H.J. Thompson & Prigge

Inyo blazing star

Print Report

Taxon Summary

Mentzelia inyoensis, commonly known as Inyo blazing star, is a perennial herb in the Loasaceae that is found in California and elsewhere. It occurs within Great Basin scrub, and Pinyon and juniper woodland, growing at elevations from 1158 to 1980 meters. Mentzelia inyoensis is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification


Scientific Name:	Mentzelia inyoensis H.J. Thompson & Prigge
Common Name:	Inyo blazing star
Family:	Loasaceae
Element Code:	PDLOA032Z0
USDA Plants Symbol:	MEIN15
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Apr-Oct	Apr-Oct
Elevation:	1158-1980 (3800-6495)
General Habitats:	Great Basin scrub, Pinyon and juniper woodland
Microhabitat:	Carbonate (sometimes), Rocky
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G2
State Rank:	S1
State List:	None
Fed List:	None
Other Status:	BLM_S; SB_CalBG/RSABG; USFS_S
CRPR Changes:	changed from 1B.3 to 1B.1 on 2020-09-17 added to 1B.3 on 2007-02-05

Occurrence Data from the CNDDB


Total Occurrences:	4
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	1
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	3

Location


California Endemic: False
California Counties and Islands: Name (Code)
Inyo (INY), Mono (MNO)
Quads: Name (Quad Code)
Blanco Mtn. (3711842)?, Chalfant Valley (3711853), Dyer (3711861)

Threat List Data from the CNDDB


Threat List Total:	1
EOs with Threat Listed:	Total EOs	% of EOs
	1	25 %
Non-native animal impacts	1	25%

Notes



Threatened by feral herbivores. See Madrono 51(4): 379 (2004) for original description.
Threats:

Taxonomy:

Selected References

CRPR List Addition on 2007-02-05

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 24 October 2025].