CNPS Inventory Plant Detail

*The database used to provide updates to the Online Inventory is under construction. View updates and changes made since May 2019 here.

Arctostaphylos malloryi

Common Name:	Mallory's manzanita
Family:	Ericaceae
Synonyms:	Arctostaphylos canescens ssp. malloryi
Element Code:	PDERI042V0
Full Name:	Arctostaphylos malloryi (W. Knight & Gankin) P.V. Wells
USDA PLANTS Symbol:	ARMA31

2006 Dean Wm. Taylor

Biology
Lifeform: perennial evergreen shrub Blooming Period: Apr-Jul Habitat: volcanic. • Chaparral • Lower montane coniferous forest

Rarity Status
California Rare Plant Rank: 4.3 Limited distribution in California .3: Not very endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S3 S3: Vulnerable. Global Rank: G3 G3: Vulnerable.

Occurrence Data from CDFW
California Natural Diversity Database

Total # of Known Element Occurrences:
Element Occurrence Ranks:

A B C D X U

Population Status:

Historic >20 yrs	Recent <=20 yrs

Presence:

Present Extant	Possibly Extirpated	Presumed Extirpated

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. To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page. Date Added: 1974-01-01 Last Update: 2015-07-23

Location

Elevation: 765 - 1280 meters

California Endemic: yes

Other States:

California Counties and Islands: name (code)
Colusa (COL), Shasta (SHA), Trinity (TRI)

Quads: name (DWR code) USGS code
Fouts Springs (564C) 3912236, Chanchelulla Peak (631B) 4012248, Dubakella Mtn. (632B) 4012342, Whiskeytown (648A) 4012265, Montgomery Creek (663C) 4012178

Notes:

Definitions of codes preceding a county and/or quad:
*		Presumed extirpated
?		Uncertain about distribution or identity
?*		Uncertain about distribution, but presumed extirpated if once present
(?)		Occurrence confirmed, but possibly extirpated

Species may be present in other areas where conditions are favorable. This data should NOT be substituted for pre-project review or for on-site surveys.

Includes unprocessed quads for CRPR 3 and 4 plants; unprocessed location data has not been quality controlled and may contain errors.

Presumed Extant

Presumed Extirpated or Unknown

1568

Links to Leading Resources of Taxon Information
USDA PLANTS Calflora Consortium of California Herbaria CalPhotos California Department of Fish and Wildlife: CNDDB Quick Viewer

Suggested Citation
California Native Plant Society, Rare Plant Program. . Inventory of Rare and Endangered Plants of California (online edition, v8-03). Website http://www.rareplants.cnps.org [accessed ].

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