Taxon Report

Baccharis plummerae Gray ssp. plummerae

Plummer's baccharis

Print Report

Taxon Summary

Baccharis plummerae ssp. plummerae, commonly known as Plummer's baccharis, is a perennial deciduous shrub in the Asteraceae that is found only in California. It occurs within Broadleafed upland forest, Chaparral, Cismontane woodland, and Coastal scrub, growing at elevations from 5 to 425 meters. Baccharis plummerae ssp. plummerae is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification


Scientific Name:	Baccharis plummerae Gray ssp. plummerae
Common Name:	Plummer's baccharis
Family:	Asteraceae
Element Code:	PDAST0W0D2
USDA Plants Symbol:	BAPLP
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial deciduous shrub
Blooming Period: May-Oct	May-Oct
Elevation:	5-425 (15-1395)
General Habitats:	Broadleafed upland forest, Chaparral, Cismontane woodland, Coastal scrub
Microhabitat:	Rocky
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.3
Global Rank:	G3T3
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), Santa Barbara (SBA), Ventura (VEN)
Quads: Name (Quad Code)
Bald Mountain (3411978), Carpinteria (3411945), Dos Pueblos Canyon (3411948), Gaviota (3412042), Goleta (3411947), Hildreth Peak (3411955), Malibu Beach (3411816), Ojai (3411942), Pitas Point (3411934), San Marcos Pass (3411957), San Rafael Mtn. (3411967), Santa Barbara (3411946), Santa Cruz Island A (3311987), Santa Cruz Island B (3311986), Santa Cruz Island C (3311985), Saticoy (3411932), Ventura (3411933), White Ledge Peak (3411944)

Threat List Data from the CNDDB


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

Notes



Threatened by development, and by feral animals on SCZ Isl.
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 9 May 2025].