Taxon Details

Eriogonum argillosum

clay buckwheat

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Taxon Summary:

Eriogonum argillosum, commonly known as clay buckwheat, is a annual herb in the Polygonaceae that is found only in California. It occurs within Cismontane woodland (clay, and serpentinite), growing at elevations from 150 to 800 meters. Eriogonum argillosum is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification

Scientific Name: Eriogonum argillosum J.T. Howell
Common Name: clay buckwheat
Family:	Polygonaceae
Element Code:	PDPGN080J0
USDA Plants Symbol:	ERAR9
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:	G3G4
State Rank:	S3S4
Other Status:
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: annual herb

Blooming Period: Mar-Jun

Elevation:
150 - 800 meters
490 - 2625 feet

General Habitats:

Cismontane woodland (clay, serpentinite)

Microhabitat Details:

Microhabitat:

Notes

Notes: See Phytologia 66(4):376 (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)

California Counties and Islands: Name (Code)
Monterey (MNT), San Benito (SBT), Santa Clara (SCL)

Quads: Name (Quad Code)
Bickmore Canyon (3612152), Cherry Peak (3612162), Hollister (3612174), Monarch Peak (3612027), Nattrass Valley (3612028), Paicines (3612163), Pancho Rico Valley (3612017), Priest Valley (3612026), Rock Spring Peak (3612048), San Benito (3612151), San Jose East (3712137), Topo Valley (3612141)

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