Taxon Details

Eriogonum ovalifolium var. eximium

brown-margined buckwheat

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Taxon Summary:

Eriogonum ovalifolium var. eximium, commonly known as brown-margined buckwheat, is a perennial herb in the Polygonaceae that is found in California and elsewhere. It occurs within Alpine boulder and rock field, and Subalpine coniferous forest, growing at elevations from 1800 to 3400 meters. Eriogonum ovalifolium var. eximium is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification

Scientific Name: Eriogonum ovalifolium Nutt. var. eximium (Tides.) J.T. Howell
Common Name: brown-margined buckwheat
Family:	Polygonaceae
Element Code:	PDPGN084FD
USDA Plants Symbol:	EROVE
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	4.3
Fed List:	None
State List:	None
Global Rank:	G5T2
State Rank:	S2
Other Status:
CRPR Changes:
Add Date:	1994-01-01
Date Edited:	2021-12-09

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jun-Aug

Elevation:
1800 - 3400 meters
5905 - 11155 feet

General Habitats:

Alpine boulder and rock field
Subalpine coniferous forest

Microhabitat Details:

Microhabitat:

Granitic
Sandy

Notes

Notes: Intergrades with var. nivale. See Proceedings of the Biological Society of Washington 36:181 (1923) for original description, Mentzelia 1:19 (1976) for revised nomenclature, and Phytologia 66(4):335-336 (1989) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	0
	Total EOs	% of EOs
EOs with Threat Listed:	0	0 %

Occurrence Data from the CNDDB

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

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

Presence:
Presumed Extant	0
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

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

California Counties and Islands: Name (Code)
El Dorado (ELD)

Quads: Name (Quad Code)
Robbs Peak (3812084)

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