Taxon Details

Eriogonum wrightii var. olanchense

Olancha Peak buckwheat

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Taxon Summary:

Eriogonum wrightii var. olanchense, commonly known as Olancha Peak buckwheat, is a perennial herb in the Polygonaceae that is found only in California. It occurs within Alpine boulder and rock field, Subalpine coniferous forest (gravelly, and rocky), growing at elevations from 3260 to 3535 meters. Eriogonum wrightii var. olanchense is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification

Scientific Name: Eriogonum wrightii Benth. var. olanchense (J.T. Howell) Rev.
Common Name: Olancha Peak buckwheat
Family:	Polygonaceae
Element Code:	PDPGN086D3
USDA Plants Symbol:	ERWRO
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:	G5T2
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: Jul-Sep

Elevation:
3260 - 3535 meters
10695 - 11600 feet

General Habitats:

Alpine boulder and rock field
Subalpine coniferous forest (gravelly, rocky)

Microhabitat Details:

Microhabitat:

Notes

Notes: Known from only two occurrences on Olancha Pk. See Leaflets of Western Botany 6:151 (1951) for original description, and Phytologia 66(4):324-326 (1989) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	1
	Total EOs	% of EOs
EOs with Threat Listed:	2	100 %
Other	2	100%

Occurrence Data from the CNDDB

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

Occurrence Status:
Historical >20 Years	0
Recent <=20 Years	2

Presence:
Presumed Extant	2
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Inyo (INY), Tulare (TUL)

Quads: Name (Quad Code)
Haiwee Pass (3611821), Olancha (3611831)

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