Taxon Details

Arctostaphylos montaraensis

Montara manzanita

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Taxon Summary:

Arctostaphylos montaraensis, commonly known as Montara manzanita, is a perennial evergreen shrub in the Ericaceae that is found only in California. It occurs within Chaparral (maritime), and Coastal scrub, growing at elevations from 80 to 500 meters. Arctostaphylos montaraensis is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Arctostaphylos montaraensis Roof
Common Name: Montara manzanita
Family:	Ericaceae
Element Code:	PDERI042W0
USDA Plants Symbol:	ARMO5
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G1
State Rank:	S1
Other Status:	SB_CalBG/RSABG; SB_USDA
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2022-02-01

Ecology and Life History

Lifeform: perennial evergreen shrub

Blooming Period: Jan-Mar

Elevation:
80 - 500 meters
260 - 1640 feet

General Habitats:

Chaparral (maritime)
Coastal scrub

Microhabitat Details:

Microhabitat:

Notes

Notes: Known from fewer than ten occurrences. Threatened by development and vehicles. See Four Seasons 2(3):8 (1967) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	7
	Total EOs	% of EOs
EOs with Threat Listed:	3	75 %
Improper burning regime	2	50%
Non-native plant impacts	2	50%
Road/trail construction/maint.	2	50%
Wood cutting or brush clearing	1	25%
Other	1	25%
Erosion/runoff	1	25%
Foot traffic/trampling	1	25%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					4
A	B	C	D	X	U
2	0	1	1	0	0

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

Presence:
Presumed Extant	4
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)
Montara Mountain (3712254), 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