Taxon Details

Arctostaphylos bakeri ssp. bakeri

Baker's manzanita

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Photo of Arctostaphylos bakeri ssp. bakeri

Taxon Summary:

Arctostaphylos bakeri ssp. bakeri, commonly known as Baker's manzanita, is a perennial evergreen shrub in the Ericaceae that is found only in California. It occurs within Broadleafed upland forest, and Chaparral, growing at elevations from 75 to 300 meters. Arctostaphylos bakeri ssp. bakeri is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification

Scientific Name: Arctostaphylos bakeri Eastw. ssp. bakeri
Common Name: Baker's manzanita
Family:	Ericaceae
Element Code:	PDERI04221
USDA Plants Symbol:	ARBAB
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	None
State List:	CR (1979-09-01)
Global Rank:	G2T1
State Rank:	S1
Other Status:	SB_UCSC
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2022-12-06

Ecology and Life History

Lifeform: perennial evergreen shrub

Blooming Period: Feb-Apr

Elevation:
75 - 300 meters
245 - 985 feet

General Habitats:

Broadleafed upland forest
Chaparral

Microhabitat Details:

Microhabitat:

Serpentine (often)

Notes

Notes: Known from fewer than ten occurrences. Threatened by development, road construction and widening, non-native plants, and dumping. See Leaflets of Western Botany 1:115 (1934) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	5
	Total EOs	% of EOs
EOs with Threat Listed:	2	67 %
Development	2	66%
Non-native plant impacts	2	66%
Road/trail construction/maint.	2	66%
Vandalism/dumping/litter	1	33%
Grazing	1	33%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					3
A	B	C	D	X	U
0	2	0	0	0	1

Occurrence Status:
Historical >20 Years	2
Recent <=20 Years	1

Presence:
Presumed Extant	3
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Sonoma (SON)

Quads: Name (Quad Code)
Camp Meeker (3812248), Duncans Mills (3812341)

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

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CNPS Rare Plant Inventory