Species Details

Arctostaphylos glandulosa ssp. gabrielensis

San Gabriel manzanita

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Photo of Arctostaphylos glandulosa ssp. gabrielensis

Classification

Scientific Name: Arctostaphylos glandulosa Eastw. ssp. gabrielensis (P.V. Wells) J.E. Keeley, M.C. Vasey & V.T. Parker
Common Name: San Gabriel manzanita
Family:	Ericaceae
Element Code:	PDERI042P0
USDA Plants Symbol:
Synonyms/Other Names: Arctostaphylos gabrielensis

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G5T3
State Rank:	S3
Other Status:	BLM_S; SB_CalBG/RSABG; USFS_S
CRPR Changes:
Add Date:	1994-01-01
Date Edited:	2024-11-05

Ecology and Life History

Lifeform: perennial evergreen shrub

Blooming Period: Mar

Elevation:
595 - 1500 meters
1950 - 4920 feet

General Habitats:

Chaparral (rocky)

Microhabitat Details:

Microhabitat:

Notes

Notes: Known only from Mill Creek Summit divide in the San Gabriel Mtns. Threatened by powerline construction. See Four Seasons 9(2):46 (1992) 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:	1	3 %
Development	1	2%
Foot traffic/trampling	1	2%
Other	1	2%
Road/trail construction/maint.	1	2%
Wood cutting or brush clearing	1	2%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					35
A	B	C	D	X	U
0	1	0	0	0	34

Occurrence Status:
Historical >20 Years	19
Recent <=20 Years	16

Presence:
Presumed Extant	35
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), San Bernardino (SBD), Santa Barbara (SBA)

Quads: Name (Quad Code)
Acton (3411842), Bates Canyon (3411988), Chilao Flat (3411831), Condor Peak (3411832), Crystal Lake (3411737), Cucamonga Peak (3411725), Juniper Hills (3411748), Manzanita Mtn. (3412081), Miranda Pine Mtn. (3512011), Mount San Antonio (3411736), Mt. Baldy (3411726), Mt. Wilson (3411821), Pacifico Mountain (3411841), Peak Mountain (3411987), Taylor Canyon (3511918), Waterman Mtn. (3411738)

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