Taxon Report

Eriogonum cedrorum Reveal & Raiche

Cedars buckwheat

Print Report

Taxon Summary

Eriogonum cedrorum, commonly known as Cedars buckwheat, is a perennial herb in the Polygonaceae that is found only in California. It occurs within Closed-cone coniferous forest, growing at elevations from 365 to 550 meters. Eriogonum cedrorum is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification


Scientific Name:	Eriogonum cedrorum Reveal & Raiche
Common Name:	Cedars buckwheat
Family:	Polygonaceae
Element Code:	PDPGN087A0
USDA Plants Symbol:
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Jun-Sep	Jun-Sep
Elevation:	365-550 (1200-1805)
General Habitats:	Closed-cone coniferous forest
Microhabitat:	Serpentine
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.3
Global Rank:	G1
State Rank:	S1
State List:	None
Fed List:	None
Other Status:	BLM_S; SB_CalBG/RSABG
CRPR Changes:	added to 1B.3 on 2010-03-01

Occurrence Data from the CNDDB


Total Occurrences:	3
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	3

Location


California Endemic: True
California Counties and Islands: Name (Code)
Sonoma (SON)
Quads: Name (Quad Code)
Cazadero (3812351), Fort Ross (3812352), Tombs Creek (3812362)

Threat List Data from the CNDDB


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

Notes



Known from fewer than 5 occurrences. See J. Bot. Res. Inst. Texas 3(2): 479-483 (2009) for original description.
Threats:

Taxonomy:

Selected References

CRPR List Addition on 2010-03-01

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 24 October 2025].