Taxon Report

Eriogonum callistum Reveal

Tehachapi buckwheat

Print Report

Taxon Summary

Eriogonum callistum, commonly known as Tehachapi buckwheat, is a perennial herb in the Polygonaceae that is found only in California. It occurs within Chaparral, growing at elevations from 1400 to 1730 meters. Eriogonum callistum is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification


Scientific Name:	Eriogonum callistum Reveal
Common Name:	Tehachapi buckwheat
Family:	Polygonaceae
Element Code:	PDPGN08790
USDA Plants Symbol:
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: May-Jul	May-Jul
Elevation:	1400-1730 (4595-5675)
General Habitats:	Chaparral
Microhabitat:	Openings, Rocky
Microhabitat Details:	limestone

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G1
State Rank:	S1
State List:	None
Fed List:	None
Other Status:	SB_CalBG/RSABG
CRPR Changes:	added to 1B.1 on 2008-10-14

Occurrence Data from the CNDDB


Total Occurrences:	6
Element Occurrence Ranks:
Excellent (A)	4
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	2

Location


California Endemic: True
California Counties and Islands: Name (Code)
Kern (KRN)
Quads: Name (Quad Code)
Lebec (3411877), Winters Ridge (3411886)

Threat List Data from the CNDDB


Threat List Total:	1
EOs with Threat Listed:	Total EOs	% of EOs
	2	33 %
Development	2	33%

Notes



Known from fewer than 5 occurrences. Potentially threatened by urban and energy development. Not in The Jepson Manual (1993). See SIDA 22(2): 857-861 (2006) for original description.
Threats:

Taxonomy:

Selected References

CRPR List Addition on 2008-10-14

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].