Species Details

Arctostaphylos klamathensis

Klamath manzanita

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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:	G2
State Rank:	S2
Other Status:	BLM_S; SB_CalBG/RSABG
CRPR Changes:
Add Date:	1984-01-01
Date Edited:	2024-11-05

Ecology and Life History

Lifeform: perennial evergreen shrub

Blooming Period: May-Aug

Elevation:
1370 - 2250 meters
4495 - 7380 feet

General Habitats:

Chaparral (montane)
Lower montane coniferous forest
Subalpine coniferous forest
Upper montane coniferous forest

Microhabitat Details:

Microhabitat:

Gabbroic (sometimes)
Rocky
Serpentine (sometimes)

Notes

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

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	7
	Total EOs	% of EOs
EOs with Threat Listed:	33	69 %
Logging	29	60%
Improper burning regime	8	16%
Road/trail construction/maint.	7	14%
Biocides	4	8%
Recreational use (non-ORV)	3	6%
ORV activity	2	4%
Wood cutting or brush clearing	1	2%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					48
A	B	C	D	X	U
11	19	4	0	0	14

Occurrence Status:
Historical >20 Years	17
Recent <=20 Years	31

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

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

CNPS Rare Plant Inventory