Taxon Details

Eriogonum grande var. timorum

San Nicolas Island buckwheat

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Taxon Summary:

Eriogonum grande var. timorum, commonly known as San Nicolas Island buckwheat, is a perennial herb in the Polygonaceae that is found only in California. It occurs within Coastal bluff scrub, growing at elevations from 10 to 215 meters. Eriogonum grande var. timorum is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification

Scientific Name: Eriogonum grande Greene var. timorum Rev.
Common Name: San Nicolas Island buckwheat
Family:	Polygonaceae
Element Code:	PDPGN082J3
USDA Plants Symbol:	ERGRT
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	None
State List:	CE (1979-11-01)
Global Rank:	G4T1
State Rank:	S1
Other Status:
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Mar-Oct

Elevation:
10 - 215 meters
35 - 705 feet

General Habitats:

Coastal bluff scrub

Microhabitat Details:

Microhabitat:

Notes

Notes: Possibly threatened by Navy activities, erosion, non-native plants, and hybridization with introduced Eriogonum spp. See Aliso 7(2):229 (1970) for original description, and Phytologia 66(4):333-334 (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	%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					3
A	B	C	D	X	U
1	0	0	0	0	2

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)
Ventura (VEN)

Quads: Name (Quad Code)
San Nicolas Island (3311924)

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