Taxon Details

Eriogonum umbellatum var. glaberrimum

Warner Mountains buckwheat

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Photo of Eriogonum umbellatum var. glaberrimum

Taxon Summary:

Eriogonum umbellatum var. glaberrimum, commonly known as Warner Mountains buckwheat, is a perennial herb in the Polygonaceae that is found in California and elsewhere. It occurs within Great Basin scrub, Lower montane coniferous forest, and Upper montane coniferous forest, growing at elevations from 1525 to 2405 meters. Eriogonum umbellatum var. glaberrimum is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification

Scientific Name: Eriogonum umbellatum Torr. var. glaberrimum (Gand.) Rev.
Common Name: Warner Mountains buckwheat
Family:	Polygonaceae
Element Code:	PDPGN086U2
USDA Plants Symbol:	ERUMG
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:	BLM_S; SB_UCSC; USFS_S
CRPR Changes:
Add Date:	1988-01-01
Date Edited:	2024-11-05

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jun-Sep

Elevation:
1525 - 2405 meters
5005 - 7890 feet

General Habitats:

Great Basin scrub
Lower montane coniferous forest
Upper montane coniferous forest

Microhabitat Details:

Microhabitat:

Gravelly (sometimes)
Sandy (sometimes)

Notes

Notes: Threatened by grazing and vehicles. Previously included as E. umbellatum var. aureum; a taxon that does not occur in CA. See Taxon 17:531-532 (1968) for revised nomenclature, and Phytologia 66(4):341-347 (1989) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	7
	Total EOs	% of EOs
EOs with Threat Listed:	5	63 %
Grazing	3	37%
Logging	3	37%
Road/trail construction/maint.	2	25%
Erosion/runoff	1	12%
Foot traffic/trampling	1	12%
ORV activity	1	12%
Recreational use (non-ORV)	1	12%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					8
A	B	C	D	X	U
0	5	1	0	0	2

Occurrence Status:
Historical >20 Years	8
Recent <=20 Years	0

Presence:
Presumed Extant	8
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Oregon (OR)

California Counties and Islands: Name (Code)
Modoc (MOD), Siskiyou (SIS)

Quads: Name (Quad Code)
Beaver Mtn. (4112086), Boulder Peak (4112351), Cedarville (4112052), Davis Creek (4112063), Mt. Bidwell (4112082)

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