Taxon Details

Arctostaphylos malloryi

Mallory's manzanita

View Report Copy Link Calflora eFlora CCH CalPhotos iNaturalist

Taxon Summary:

Arctostaphylos malloryi, commonly known as Mallory's manzanita, is a perennial evergreen shrub in the Ericaceae that is found only in California. It occurs within Chaparral, and Lower montane coniferous forest, growing at elevations from 765 to 1280 meters. Arctostaphylos malloryi is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification

Scientific Name: Arctostaphylos malloryi (W. Knight & Gankin) P.V. Wells
Common Name: Mallory's manzanita
Family:	Ericaceae
Element Code:	PDERI042V0
USDA Plants Symbol:	ARMA31
Synonyms/Other Names: Arctostaphylos canescens Eastw. ssp. malloryi Knight & Gankin
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	4.3
Fed List:	None
State List:	None
Global Rank:	G3
State Rank:	S3
Other Status:	SB_UCSC
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2022-12-06

Ecology and Life History

Lifeform: perennial evergreen shrub

Blooming Period: Apr-Jul

Elevation:
765 - 1280 meters
2510 - 4200 feet

General Habitats:

Chaparral
Lower montane coniferous forest

Microhabitat Details:

Microhabitat:

Volcanic

Notes

Notes: To be expected in GLE and TEH counties. Potentially threatened by road construction. See Four Seasons 6(4):23 (1983) for original description and 9(2):54-59 (1992) for revised nomenclature.
Threats:
Taxonomy:

Threat List Data from the CNDDB

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

Occurrence Data from the CNDDB

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

Occurrence Status:
Historical >20 Years	0
Recent <=20 Years	0

Presence:
Presumed Extant	0
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Colusa (COL), Shasta (SHA), Trinity (TRI)

Quads: Name (Quad Code)
Chanchelulla Peak (4012248), Dubakella Mtn. (4012342), Fouts Springs (3912236), Montgomery Creek (4012178), Whiskeytown (4012265)

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

Click on quad for name. Hold Shift Key to use mouse scroll wheel

CNPS Rare Plant Inventory