Taxon Report

Baccharis malibuensis Beauchamp & Henrickson

Malibu baccharis

Print Report

Species Description:
Baccharis malibuensis, commonly known as Malibu baccharis, is a perennial deciduous shrub in the Asteraceae that is found only in California. It occurs within Chaparral, Cismontane woodland, Coastal scrub, and Riparian woodland, growing at elevations from 150 to 305 meters. Baccharis malibuensis is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification


Scientific Name:	Baccharis malibuensis Beauchamp & Henrickson
Common Name:	Malibu baccharis
Family:	Asteraceae
Element Code:	PDAST0W0W0
USDA Plants Symbol:	BAMA13
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial deciduous shrub
Blooming Period: Aug	Aug
Elevation:	150-305 (490-1000)
General Habitats:	Chaparral, Cismontane woodland, Coastal scrub, Riparian woodland
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G1
State Rank:	S1
State List:	None
Fed List:	None
Other Status:	SB_CalBG/RSABG
CRPR Changes:

Occurrence Data from the CNDDB


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

Location


California Endemic: True
California Counties and Islands: Name (Code)
Los Angeles (LAX), Orange (ORA), Ventura (VEN)
Quads: Name (Quad Code)
Black Star Canyon (3311776), Malibu Beach (3411816), Point Dume (3411817), Thousand Oaks (3411827)

Threat List Data from the CNDDB


Threat List Total:	7
EOs with Threat Listed:	Total EOs	% of EOs
	6	46 %
Development	3	23%
Recreational use (non-ORV)	2	15%
Road/trail construction/maint.	1	7%
Vandalism/dumping/litter	1	7%
Foot traffic/trampling	1	7%
ORV activity	1	7%
Other	1	7%

Notes



Known from fewer than 10 occurrences in the Santa Monica Mtns. Threatened by urbanization and recreational activities. Not in The Jepson Manual. See Aliso 14(3):202 (1995) 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 13 January 2025].