CNPS

CNPS Rare Plant Inventory

Species Details

Baccharis malibuensis

Malibu baccharis

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  Classification

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

  Conservation Status

CA Rare Plant Rank: 1B.1
Fed List: None
State List: None
Global Rank: G1
State Rank:
 S1
Other Status: SB_CalBG/RSABG
CRPR Changes:
Add Date: 2001-01-01
Date Edited: 2021-05-26

  Ecology and Life History

Lifeform: perennial deciduous shrub
Blooming Period: Aug
JFMAMJJASOND
Elevation:
150 - 305 meters
490 - 1000 feet
General Habitats:
  • Chaparral
  • Cismontane woodland
  • Coastal scrub
  • Riparian woodland
Microhabitat Details:
Microhabitat:

  Notes

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:

  Threat List Data from the CNDDB

Threat List Total: 7
Total EOs % of EOs
EOs with Threat Listed: 6 46 %
THREAT LIST:
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%

  Occurrence Data from the CNDDB

Total Occurrences: 13
Element Occurrence Ranks:
A B C D X U
0 1 1 0 0 11
Occurrence Status:
Historical >20 Years 8
Recent <=20 Years 5
Presence:
Presumed Extant 13
Possibly Extirpated 0
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
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)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.
Regional Map

  Map

Presumed Extant
Click on quad for name. Hold Shift Key to use mouse scroll wheel

  Selected References

Suggested Citation:
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 25 April 2024].