Taxon Report

Erigeron petrophilus Greene var. sierrensis G. Nesom

northern Sierra daisy

Print Report

Taxon Summary

Erigeron petrophilus var. sierrensis, commonly known as northern Sierra daisy, is a perennial rhizomatous herb in the Asteraceae that is found only in California. It occurs within Cismontane woodland, Lower montane coniferous forest, and Upper montane coniferous forest, growing at elevations from 300 to 2073 meters. Erigeron petrophilus var. sierrensis is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification


Scientific Name:	Erigeron petrophilus Greene var. sierrensis G. Nesom
Common Name:	northern Sierra daisy
Family:	Asteraceae
Element Code:	PDAST3M351
USDA Plants Symbol:	ERPES2
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial rhizomatous herb
Blooming Period: Jun-Oct	Jun-Oct
Elevation:	300-2073 (985-6800)
General Habitats:	Cismontane woodland, Lower montane coniferous forest, Upper montane coniferous forest
Microhabitat:	Serpentine (sometimes)
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.3
Global Rank:	G4T4
State Rank:	S4
State List:	None
Fed List:	None
Other Status:
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)
Butte (BUT), El Dorado (ELD), Nevada (NEV), Placer (PLA), Plumas (PLU), Sierra (SIE), Yuba (YUB)
Quads: Name (Quad Code)
Belden (4012113), Blue Nose Mtn. (3912077), Boca (3912041), Bucks Lake (3912182), Canyondam (4012121), Caribou (4012112), Challenge (3912142), Clipper Mills (3912152), Dogwood Peak (3912171), French Corral (3912132), Gold Lake (3912066), Greek Store (3912015), Haskins Valley (3912172), Johnsville (3912076), La Porte (3912068), Meadow Valley (3912181), Mt. Fillmore (3912067), Onion Valley (3912078), Paradise East (3912175), Pollock Pines (3812075), Pulga (3912174), Quincy (3912088), Riverton (3812074), Soapstone Hill (3912173), Soda Springs (3912034), Stirling City (3912185), Taylorsville (4012017), Twain (4012111)

Threat List Data from the CNDDB


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

Notes



Possibly threatened by road maintenance. See Phytologia 72(3):157-208 (1992) for original description.
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].