Taxon Details

Eriogonum nortonii

Pinnacles buckwheat

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Taxon Summary:

Eriogonum nortonii, commonly known as Pinnacles buckwheat, is a annual herb in the Polygonaceae that is found only in California. It occurs within Chaparral, and Valley and foothill grassland, growing at elevations from 300 to 975 meters. Eriogonum nortonii is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification

Scientific Name: Eriogonum nortonii Greene
Common Name: Pinnacles buckwheat
Family:	Polygonaceae
Element Code:	PDPGN08470
USDA Plants Symbol:	ERNO2
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:	G2
State Rank:	S2
Other Status:	BLM_S
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2021-12-09

Ecology and Life History

Lifeform: annual herb

Blooming Period: (Apr)Aug(Sep)May-Jun

Elevation:
300 - 975 meters
985 - 3200 feet

General Habitats:

Chaparral
Valley and foothill grassland

Microhabitat Details: often on recent burns

Microhabitat:

Burned areas (often)
Sandy

Notes

Notes: See Phytologia 66(4):376 (1989) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	10
	Total EOs	% of EOs
EOs with Threat Listed:	14	39 %
Road/trail construction/maint.	6	16%
Development	2	5%
Foot traffic/trampling	2	5%
Grazing	2	5%
Improper burning regime	1	2%
Mining	1	2%
Non-native plant impacts	1	2%
ORV activity	1	2%
Recreational use (non-ORV)	1	2%
Wood cutting or brush clearing	1	2%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					36
A	B	C	D	X	U
2	5	0	2	0	27

Occurrence Status:
Historical >20 Years	22
Recent <=20 Years	14

Presence:
Presumed Extant	36
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)

Quads: Name (Quad Code)
Bickmore Canyon (3612152), Chews Ridge (3612135), Chualar (3612155), Hollister (3612174), Mount Johnson (3612153), Mt. Harlan (3612164), Natividad (3612165), North Chalone Peak (3612142), Rana Creek (3612145), San Juan Bautista (3612175), Soberanes Point (3612148), Spreckels (3612156), 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