Taxon Details

Horkelia hispidula

White Mountains horkelia

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Taxon Summary:

Horkelia hispidula, commonly known as White Mountains horkelia, is a perennial herb in the Rosaceae that is found in California and elsewhere. It occurs within Alpine dwarf scrub, Great Basin scrub, and Subalpine coniferous forest, growing at elevations from 3000 to 3400 meters. Horkelia hispidula is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification

Scientific Name: Horkelia hispidula Rydb.
Common Name: White Mountains horkelia
Family:	Rosaceae
Element Code:	PDROS0W0A0
USDA Plants Symbol:	HOHI
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.3
Fed List:	None
State List:	None
Global Rank:	G3
State Rank:	S3
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: Jun-Aug

Elevation:
3000 - 3400 meters
9845 - 11155 feet

General Habitats:

Alpine dwarf scrub
Great Basin scrub
Subalpine coniferous forest

Microhabitat Details:

Microhabitat:

Notes

Notes: Possibly threatened by vehicles. See North American Flora 22:278 (1908) 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:	5	36 %
Foot traffic/trampling	2	14%
Grazing	2	14%
Other	1	7%
Road/trail construction/maint.	1	7%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					14
A	B	C	D	X	U
3	2	0	0	0	9

Occurrence Status:
Historical >20 Years	7
Recent <=20 Years	7

Presence:
Presumed Extant	14
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Nevada (NV)

California Counties and Islands: Name (Code)
Inyo (INY), Mono (MNO)

Quads: Name (Quad Code)
Blanco Mtn. (3711842), Juniper Mtn. (3711862), Mt. Barcroft (3711852), Station Peak (3711851)

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