CNPS

CNPS Rare Plant Inventory

Species Details

Arctostaphylos malloryi

Mallory's manzanita

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Photo of Arctostaphylos malloryi
©2009 Timothy D. Ives 		Photo of Arctostaphylos malloryi
©2015 Len Lindstrand III 		Photo of Arctostaphylos malloryi
©2015 Sierra Pacific Industries

  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:

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

  Occurrence Data from the CNDDB

Total Occurrences: 0
Element Occurrence Ranks:
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

  Selected References

Suggested Citation:
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 19 April 2024].