Species Details

Arctostaphylos imbricata

San Bruno Mountain manzanita

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Classification

Scientific Name: Arctostaphylos imbricata Eastw.
Common Name: San Bruno Mountain manzanita
Family:	Ericaceae
Element Code:	PDERI040L0
USDA Plants Symbol:	ARIM
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	None
State List:	CE (1979-09-01)
Global Rank:	G1
State Rank:	S1
Other Status:
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2022-02-01

Ecology and Life History

Lifeform: perennial evergreen shrub

Blooming Period: Feb-May

Elevation:
275 - 370 meters
900 - 1215 feet

General Habitats:

Chaparral
Coastal scrub

Microhabitat Details:

Microhabitat:

Rocky

Notes

Notes: Threatened by fungal infection, and possibly by alteration of fire regimes. All occurrences are within the boundaries of the San Bruno Mtn. HCP. See Proceedings of the California Academy of Sciences IV 20:149 (1931) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	2
	Total EOs	% of EOs
EOs with Threat Listed:	1	50 %
ORV activity	1	50%
Other	1	50%

Occurrence Data from the CNDDB

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

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

Presence:
Presumed Extant	2
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
San Mateo (SMT)

Quads: Name (Quad Code)
San Francisco South (3712264)

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