Species Details

Mentzelia torreyi

Torrey's blazing star

View Report Copy Link CalFlora EFlora CCH CalPhotos iNaturalist

Classification

Scientific Name: Mentzelia torreyi Gray
Common Name: Torrey's blazing star
Family:	Loasaceae
Element Code:	PDLOA031S0
USDA Plants Symbol:	METO2
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	2B.2
Fed List:	None
State List:	None
Global Rank:	G4
State Rank:	S2
Other Status:	SB_CalBG/RSABG
CRPR Changes:
Add Date:	2001-01-01
Date Edited:	2022-12-06

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jun-Aug

Elevation:
1170 - 2835 meters
3840 - 9300 feet

General Habitats:

Great Basin scrub
Mojavean desert scrub
Pinyon and juniper woodland

Microhabitat Details:

Microhabitat:

Alkaline
Rocky
Sandy
Volcanic (usually)

Notes

Notes: Possibly threatened by vehicles, grazing, and trampling. See Proceedings of the American Academy of Arts and Sciences 10:72 (1874) for original description, and Annals of the Missouri Botanical Garden 21:158-159 (1934) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	4
	Total EOs	% of EOs
EOs with Threat Listed:	2	12 %
Development	1	5%
Erosion/runoff	1	5%
Foot traffic/trampling	1	5%
Non-native plant impacts	1	5%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					17
A	B	C	D	X	U
1	1	0	0	0	15

Occurrence Status:
Historical >20 Years	11
Recent <=20 Years	6

Presence:
Presumed Extant	17
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Idaho (ID), Nevada (NV), Oregon (OR)

California Counties and Islands: Name (Code)
Inyo (INY), Mono (MNO)

Quads: Name (Quad Code)
Big Alkali (3811922), Blackrock (3611882), Casa Diablo Mtn. (3711855), Cedar Hill (3811827), Fish Slough (3711844), Independence (3611872), Lee Vining (3711981), Negit Island (3811911), Rovana (3711845), Sulphur Pond (3811818), Toms Place (3711856)

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

Click on quad for name. Hold Shift Key to use mouse scroll wheel

CNPS Rare Plant Inventory