Taxon Details

Horkelia tularensis

Kern Plateau horkelia

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Taxon Summary:

Horkelia tularensis, commonly known as Kern Plateau horkelia, is a perennial herb in the Rosaceae that is found only in California. It occurs within Upper montane coniferous forest, growing at elevations from 2255 to 2875 meters. Horkelia tularensis is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification

Scientific Name: Horkelia tularensis (J.T. Howell) Munz
Common Name: Kern Plateau horkelia
Family:	Rosaceae
Element Code:	PDROS0W0H0
USDA Plants Symbol:	HOTU
Synonyms/Other Names: Potentilla tularensis
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.3
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:	SB_CalBG/RSABG; USFS_S
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2022-12-06

Ecology and Life History

Lifeform: perennial herb

Blooming Period: (May)Jun-Aug

Elevation:
2255 - 2875 meters
7400 - 9435 feet

General Habitats:

Upper montane coniferous forest (rocky)

Microhabitat Details:

Microhabitat:

Notes

Notes: Potentially threatened by mining and recreational activities. Protected in part in BA (USFS) which includes the type locality. See Leaflets of Western Botany 10(13):254-255 (1966) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	4
	Total EOs	% of EOs
EOs with Threat Listed:	2	40 %
Grazing	2	40%
Logging	1	20%
ORV activity	1	20%
Foot traffic/trampling	1	20%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					5
A	B	C	D	X	U
1	3	0	0	0	1

Occurrence Status:
Historical >20 Years	2
Recent <=20 Years	3

Presence:
Presumed Extant	5
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Tulare (TUL)

Quads: Name (Quad Code)
Bonita Meadows (3611813), Crag Peak (3611812)

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

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CNPS Rare Plant Inventory