Taxon Report

Eriogonum siskiyouense Small

Siskiyou buckwheat

Print Report

Taxon Summary

Eriogonum siskiyouense, commonly known as Siskiyou buckwheat, is a perennial herb in the Polygonaceae that is found only in California. It occurs within Lower montane coniferous forest (rocky, and often serpentinite), growing at elevations from 970 to 2740 meters. Eriogonum siskiyouense is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification


Scientific Name:	Eriogonum siskiyouense Small
Common Name:	Siskiyou buckwheat
Family:	Polygonaceae
Element Code:	PDPGN085F0
USDA Plants Symbol:	ERSI5
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: (Jun)Jul-Sep	(Jun)Jul-Sep
Elevation:	970-2740 (3185-8990)
General Habitats:	Lower montane coniferous forest
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.3
Global Rank:	G3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	0
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	0

Location


California Endemic: True
California Counties and Islands: Name (Code)
Shasta (SHA), Siskiyou (SIS), Tehama (TEH), Trinity (TRI)
Quads: Name (Quad Code)
Billys Peak (4112227), Callahan (4112237), China Mtn. (4112245), Dubakella Mtn. (4012342), Gazelle Mtn. (4112246), Mount Eddy (4112234), North Yolla Bolly (4012228), Platina (4012238), Pony Buck Peak (4012331), Scott Mountain (4112236), Smoky Creek (4012332), South China Mtn. (4112235), Wildwood (4012341), Yreka (4112266)

Threat List Data from the CNDDB


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

Notes



See Bulletin of the Torrey Botanical Club 25:44 (1898) for original description, and Phytologia 66(4):348 (1989) for taxonomic treatment.
Threats:

Taxonomy:

Selected References

USFS Potential Species of Conservation Concern Profile

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].