Species Details

Arctostaphylos andersonii

Anderson's manzanita

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Classification

Scientific Name: Arctostaphylos andersonii Gray
Common Name: Anderson's manzanita
Family:	Ericaceae
Element Code:	PDERI04030
USDA Plants Symbol:	ARAN2
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:	SB_CalBG/RSABG; SB_UCSC
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2021-07-14

Ecology and Life History

Lifeform: perennial evergreen shrub

Blooming Period: Nov-May

Elevation:
60 - 760 meters
195 - 2495 feet

General Habitats:

Broadleafed upland forest
Chaparral
North Coast coniferous forest

Microhabitat Details:

Microhabitat:

Edges
Openings

Notes

Notes: Confused with other species merged with it as varieties. Threatened by development and road maintenance. See Proceedings of the American Academy of Arts and Sciences 11:83 (1876) for original description, and North American Flora 29:98 (1914) for additional information.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	11
	Total EOs	% of EOs
EOs with Threat Listed:	30	47 %
Other	14	21%
Road/trail construction/maint.	14	21%
Logging	11	17%
Non-native plant impacts	5	7%
Development	3	4%
Wood cutting or brush clearing	3	4%
Biocides	1	1%
Erosion/runoff	1	1%
Foot traffic/trampling	1	1%
Improper burning regime	1	1%
Recreational use (non-ORV)	1	1%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					64
A	B	C	D	X	U
5	12	12	6	1	28

Occurrence Status:
Historical >20 Years	27
Recent <=20 Years	37

Presence:
Presumed Extant	63
Possibly Extirpated	1
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
San Mateo (SMT), Santa Clara (SCL), Santa Cruz (SCR)

Quads: Name (Quad Code)
Big Basin (3712222), Davenport (3712212), Felton (3712211), Franklin Point (3712223), La Honda (3712233), Laurel (3712118), Loma Prieta (3712117), Mt. Madonna (3712116), Santa Cruz (3612281), Soquel (3612188), Watsonville East (3612186), Watsonville West (3612187), Woodside (3712243)

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