Taxon Report

Erigeron aequifolius Hall

Hall's daisy

Print Report

Taxon Summary

Erigeron aequifolius, commonly known as Hall's daisy, is a perennial rhizomatous herb in the Asteraceae that is found only in California. It occurs within Broadleafed upland forest, Lower montane coniferous forest, Pinyon and juniper woodland, and Upper montane coniferous forest, growing at elevations from 1500 to 2440 meters. Erigeron aequifolius is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification


Scientific Name:	Erigeron aequifolius Hall
Common Name:	Hall's daisy
Family:	Asteraceae
Element Code:	PDAST3M030
USDA Plants Symbol:	ERAE
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial rhizomatous herb
Blooming Period: Jun-Aug	Jun-Aug
Elevation:	1500-2440 (4920-8005)
General Habitats:	Broadleafed upland forest, Lower montane coniferous forest, Pinyon and juniper woodland, Upper montane coniferous forest
Microhabitat:	Granitic, Rocky
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.3
Global Rank:	G3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:	BLM_S; SB_CalBG/RSABG; USFS_S
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	13
Element Occurrence Ranks:
Excellent (A)	1
Good (B)	0
Fair (C)	1
Poor (D)	0
None (X)	0
Unknown (U)	11

Location


California Endemic: True
California Counties and Islands: Name (Code)
Fresno (FRE), Kern (KRN), Tulare (TUL)
Quads: Name (Quad Code)
Durrwood Creek (3611814), Hockett Peak (3611824), Hume (3611878), Kern Lake (3611834), Owens Peak (3511768), The Sphinx (3611875), Wren Peak (3611877)

Threat List Data from the CNDDB


Threat List Total:	1
EOs with Threat Listed:	Total EOs	% of EOs
	1	8 %
Road/trail construction/maint.	1	7%

Notes



Known from fewer than twenty occurrences. See University of California Publications in Botany 6:174 (1915) 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 12 November 2025].