Taxon Details

Arctostaphylos nummularia ssp. mendocinoensis

pygmy manzanita

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Taxon Summary:

Arctostaphylos nummularia ssp. mendocinoensis, commonly known as pygmy manzanita, is a perennial evergreen shrub in the Ericaceae that is found only in California. It occurs within Closed-cone coniferous forest, growing at elevations from 90 to 200 meters. Arctostaphylos nummularia ssp. mendocinoensis is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Arctostaphylos nummularia A. Gray ssp. mendocinoensis (P.V. Wells) V.T. Parker, M.C. Vasey & J.E. Keeley
Common Name: pygmy manzanita
Family:	Ericaceae
Element Code:	PDERI04280
USDA Plants Symbol:
Synonyms/Other Names: Arctostaphylos mendocinoensis
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G3?T1
State Rank:	S1
Other Status:	SB_UCSC
CRPR Changes:
Add Date:	1994-01-01
Date Edited:	2022-12-06

Ecology and Life History

Lifeform: perennial evergreen shrub

Blooming Period: Jan

Elevation:
90 - 200 meters
295 - 655 feet

General Habitats:

Closed-cone coniferous forest (acidic sandy clay)

Microhabitat Details:

Microhabitat:

Notes

Notes: Known only from one occurrence on the Mendocino Plains. See Four Seasons 8(3):30 (1989) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	0
	Total EOs	% of EOs
EOs with Threat Listed:	0	%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					7
A	B	C	D	X	U
0	0	0	0	0	7

Occurrence Status:
Historical >20 Years	3
Recent <=20 Years	4

Presence:
Presumed Extant	7
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Mendocino (MEN)

Quads: Name (Quad Code)
Fort Bragg (3912347), Mathison Peak (3912336), Mendocino (3912337), Noyo Hill (3912346)

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