Taxon Report

Eriogonum temblorense J.T. Howell & Twisselmann

Temblor buckwheat

Print Report

Taxon Summary

Eriogonum temblorense, commonly known as Temblor buckwheat, is a annual herb in the Polygonaceae that is found only in California. It occurs within Valley and foothill grassland (clay, and sandstone), growing at elevations from 300 to 1000 meters. Eriogonum temblorense is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification


Scientific Name:	Eriogonum temblorense J.T. Howell & Twisselmann
Common Name:	Temblor buckwheat
Family:	Polygonaceae
Element Code:	PDPGN085P0
USDA Plants Symbol:	ERTE15
Synonyms/Other Names:

Ecology and Life History


Lifeform:	annual herb
Blooming Period: (Apr)May-Sep	(Apr)May-Sep
Elevation:	300-1000 (985-3280)
General Habitats:	Valley and foothill grassland
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.2
Global Rank:	G2
State Rank:	S2
State List:	None
Fed List:	None
Other Status:	BLM_S
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	16
Element Occurrence Ranks:
Excellent (A)	1
Good (B)	3
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	12

Location


California Endemic: True
California Counties and Islands: Name (Code)
Kern (KRN), Kings (KNG), Monterey (MNT), San Luis Obispo (SLO)
Quads: Name (Quad Code)
Caliente Mtn. (3511917), Carneros Rocks (3511947), Elkhorn Hills (3511915), Garza Peak (3512082), McKittrick Summit (3511937), Orchard Peak (3512062), Packwood Creek (3512051), Painted Rock (3511927), Panorama Hills (3511926), Shale Point (3511958), Shandon (3512064), Tent Hills (3512072), Valleton (3512086), West Elk Hills (3511935)

Threat List Data from the CNDDB


Threat List Total:	4
EOs with Threat Listed:	Total EOs	% of EOs
	4	25 %
Foot traffic/trampling	2	12%
Grazing	2	12%
Non-native plant impacts	1	6%
Erosion/runoff	1	6%

Notes



Marginally distinct from E. eastwoodianum; needs study. Threatened by energy development. See Leaflets of Western Botany 10:45 (1963) for original description, and Phytologia 66(4):375 (1989) for taxonomic treatment.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 5 February 2025].