Arctostaphylos manzanita ssp. laevigata

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Scientific Name: Arctostaphylos manzanita Parry ssp. laevigata (Eastw.) Munz
Common Name: Contra Costa manzanita
Family:	Ericaceae
Element Code:	PDERI04273
USDA Plants Symbol:	ARMAL
Synonyms/Other Names: Arctostaphylos pungens HBK. ssp. laevigata (Eastw.) Roof

Lifeform: perennial evergreen shrub

Blooming Period: Jan-Mar(Apr)

Elevation:
430 - 1100 meters
1410 - 3610 feet

General Habitats:

Microhabitat Details:

Microhabitat:

Notes: Threatened by road maintenance. Possibly threatened by fire suppression. See Leaflets of Western Botany 1:76 (1933) for original description, and Aliso 4(1):95 (1954) for revised nomenclature.
Threats:
Taxonomy:

THREAT LIST:
Threat List Total:	6
	Total EOs	% of EOs
EOs with Threat Listed:	5	50 %
Improper burning regime	3	30%
Other	2	20%
Road/trail construction/maint.	2	20%
Wood cutting or brush clearing	2	20%
Recreational use (non-ORV)	1	10%
Biocides	1	10%

Occurrence Status:
Historical >20 Years	8
Recent <=20 Years	2

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Contra Costa (CCA)

Quads: Name (Quad Code)
Byron Hot Springs (3712176), Clayton (3712188), Diablo (3712178), Tassajara (3712177)

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

Presumed Extant

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CNPS Rare Plant Inventory