Taxon Report

Arctostaphylos pacifica Roof

Pacific manzanita

Print Report

Classification


Scientific Name:	Arctostaphylos pacifica Roof
Common Name:	Pacific manzanita
Family:	Ericaceae
Element Code:	PDERI040Z0
USDA Plants Symbol:	ARPA19
Synonyms/Other Names:

Ecology and Life History


Lifeform:	evergreen shrub
Blooming Period: Feb-Apr	Feb-Apr
Elevation:	330-330 (1085-1085)
General Habitats:	Chaparral, Coastal scrub
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G1
State Rank:	S1
State List:	CE
Fed List:	None
Other Status:	SB_UCSC
CRPR Changes:	changed from 1B.2 to 1B.1 on 2017-02-16 added to 1B.2 on 2007-03-05

Occurrence Data from the CNDDB


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

Location


California Endemic: True
California Counties and Islands: Name (Code)
San Mateo (SMT)
Quads: Name (Quad Code)
San Francisco South (3712264)

Threat List Data from the CNDDB


Threat List Total:	4
EOs with Threat Listed:	Total EOs	% of EOs
	1	100 %
Improper burning regime	1	100%
Non-native plant impacts	1	100%
ORV activity	1	100%
Other	1	100%

Notes



Known only from San Bruno Mountain in San Mateo County. Potentially threatened by alteration of fire regimes and recreational activities. Once considered a hybrid between A. glandulosa and A. uva-ursi. See A. uva-ursi in The Jepson Manual (1993). See Leaflets of Western Botany IX (13-14): 217 (1962) for original description.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 December 2024].