Taxon Report

Senecio astephanus Greene

San Gabriel ragwort

Print Report

Taxon Summary

Senecio astephanus, commonly known as San Gabriel ragwort, is a perennial herb in the Asteraceae that is found only in California. It occurs within Chaparral, and Coastal scrub, growing at elevations from 400 to 1500 meters. Senecio astephanus is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification


Scientific Name:	Senecio astephanus Greene
Common Name:	San Gabriel ragwort
Family:	Asteraceae
Element Code:	PDAST8H090
USDA Plants Symbol:	SEAS2
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: May-Jul	May-Jul
Elevation:	400-1500 (1310-4920)
General Habitats:	Chaparral, Coastal scrub
Microhabitat:	Rocky, Slopes
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.3
Global Rank:	G3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:	SB_CalBG/RSABG
CRPR Changes:	changed from 4 to 4.3 on 2012-02-15 added to 4 on 2006-11-28

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), Monterey (MNT), San Bernardino (SBD), San Diego (SDG), San Luis Obispo (SLO), Santa Barbara (SBA)
Quads: Name (Quad Code)
Atascadero (3512046), Burnett Peak (3512172), Burro Mountain (3512173), Condor Peak (3411832), Crystal Lake (3411737), Cypress Mountain (3512058), Devore (3411724), Forest Falls (3411618), Glendora (3411727), Jolon (3512182), Lake Cachuma (3411958), Mt. Baldy (3411726), Mt. Wilson (3411821), Priest Valley (3612026), Santa Barbara (3411946), Tar Spring Ridge (3512024), Tassajara Hot Springs (3612125), Thompson Canyon (3612122), Vail Lake (3311648), Yucaipa (3411711)

Threat List Data from the CNDDB


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

Notes



See Pittonia 1: 174 (1888) for original description.
Threats:

Taxonomy:

Selected References

CRPR List Addition on 2006-11-28

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 3 March 2025].