Taxon Details

Eriogonum cedrorum

Cedars buckwheat

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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:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.3
Fed List:	None
State List:	None
Global Rank:	G1
State Rank:	S1
Other Status:	BLM_S; SB_CalBG/RSABG
CRPR Changes: added to 1B.3 on 2010-03-01
Add Date:	2010-03-01
Date Edited:	2025-10-29

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jun-Sep

Elevation:
365 - 550 meters
1200 - 1805 feet

General Habitats:

Closed-cone coniferous forest

Microhabitat Details:

Microhabitat:

Serpentine

Notes

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

Threat List Data from the CNDDB

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

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					3
A	B	C	D	X	U
0	0	0	0	0	3

Occurrence Status:
Historical >20 Years	2
Recent <=20 Years	1

Presence:
Presumed Extant	3
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Sonoma (SON)

Quads: Name (Quad Code)
Cazadero (3812351), Fort Ross (3812352), Tombs Creek (3812362)

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