Taxon Report

Erigeron breweri Gray var. jacinteus (Hall) Cronq.

San Jacinto Mountains daisy

Print Report

Taxon Summary

Erigeron breweri var. jacinteus, commonly known as San Jacinto Mountains daisy, is a perennial rhizomatous herb in the Asteraceae that is found only in California. It occurs within Subalpine coniferous forest, and Upper montane coniferous forest, growing at elevations from 2700 to 2900 meters. Erigeron breweri var. jacinteus is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification


Scientific Name:	Erigeron breweri Gray var. jacinteus (Hall) Cronq.
Common Name:	San Jacinto Mountains daisy
Family:	Asteraceae
Element Code:	PDAST3M0P3
USDA Plants Symbol:	ERBRJ
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial rhizomatous herb
Blooming Period: Jun-Sep	Jun-Sep
Elevation:	2700-2900 (8860-9515)
General Habitats:	Subalpine coniferous forest, Upper montane coniferous forest
Microhabitat:	Rocky
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.3
Global Rank:	G5T3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:	SB_CalBG/RSABG
CRPR Changes:

Occurrence Data from the CNDDB


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

Location


California Endemic: True
California Counties and Islands: Name (Code)
Los Angeles (LAX), Riverside (RIV), San Bernardino (SBD)
Quads: Name (Quad Code)
Big Bear Lake (3411628), Catclaw Flat (3411616), Crystal Lake (3411737), Fawnskin (3411638), Idyllwild (3311666), Juniper Hills (3411748), Moonridge (3411627), Mount San Antonio (3411736), San Gorgonio Mtn. (3411617), San Jacinto Peak (3311676), Telegraph Peak (3411735)

Threat List Data from the CNDDB


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

Notes



See University of California Publications in Botany 1:127 (1902) for original description, and Phytologia 72(3):157-208 (1992) for taxonomic treatment.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 30 September 2025].