CNPS

CNPS Rare Plant Inventory

Species Details

Arctostaphylos klamathensis

Klamath manzanita

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Photo by ©2014 Dean Wm. Taylor max-height:128px; max-width:145px;
©2014 Dean Wm. Taylor 		Photo by ©2015 Julie Kierstead Nelson max-height:128px; max-width:145px;
©2015 Julie Kierstead Nelson 		Photo by ©2015 Julie Kierstead Nelson max-height:128px; max-width:145px;
©2015 Julie Kierstead Nelson

Classification

Scientific Name:
Arctostaphylos klamathensis Edwards, Keeler-Wolf & Knight
Common Name:
Klamath manzanita
Family: Ericaceae
Element Code: PDERI041R0
USDA Plants Symbol: ARKL
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank: 1B.2
Fed List: None
State List: None
Global Rank: G2G3
State Rank:
 S2
Other Status: SB_CalBG/RSABG
CRPR Changes:
Add Date: 1984-01-01
Date Edited: 2021-10-07

Ecology and Life History

Lifeform: perennial evergreen shrub
Blooming Period: May-Aug
Elevation:
1370 - 2250 meters
4495 - 7380 feet
General Habitat:
  • Chaparral (montane)
  • Lower montane coniferous forest
  • Subalpine coniferous forest
  • Upper montane coniferous forest
General Micro Habitat:
Micro Habitat:
  • Gabbroic (sometimes)
  • Rocky
  • Serpentinite (sometimes)

Notes

Notes:
Threatened by logging and road maintenance. See Four Seasons 6(4):20 (1983) for original description.
Threats:
Taxonomy:
Other:

Occurrence Data from the CNDDB

Total Occurrences: 48
Element Occurrence Ranks:
A B C D X U
11 19 4 0 0 14
Occurrence Status:
Historical >20 Years 8
Recent <=20 Years 40
Presence:
Presumed Extant 48
Possibly Extirpated 0
Presumed Extirpated 0

Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Shasta (SHA), Siskiyou (SIS), Trinity (TRI)
Quads: Name (Quad Code)
Carrville (4112216), Chicken Hawk Hill (4112214), Covington Mill (4012287), Mumbo Basin (4112225), Scott Mountain (4112236), Seven Lakes Basin (4112224), Siligo Peak (4012288), South China Mtn. (4112235), Tangle Blue Lake (4112226), Whisky Bill Peak (4112215), Ycatapom Peak (4112217)
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
Print this Map
Counties   Quads

Selected References

Suggested Citation:
California Native Plant Society, Rare Plant Program. 2022. Rare Plant Inventory (online edition, v9-01 1.5). Website https://www.rareplants.cnps.org [accessed 19 May 2022].