Taxon Report

Eriogonum bifurcatum Rev.

forked buckwheat

Print Report


Species Description:
Eriogonum bifurcatum, commonly known as forked buckwheat, is a annual herb in the Polygonaceae that is found in California and elsewhere. It occurs within Chenopod scrub, growing at elevations from 645 to 810 meters. Eriogonum bifurcatum is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

  Classification
Scientific Name:
 Eriogonum bifurcatum Rev.
Common Name:
 forked buckwheat
Family: Polygonaceae
Element Code: PDPGN080R0
USDA Plants Symbol: ERBI2
Synonyms/Other Names:

Ecology and Life History
Lifeform: annual herb
Blooming Period: Apr-Jun Apr-Jun
Elevation: 645-810 (2115-2660)
General Habitats: Chenopod scrub
Microhabitat:
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 1B.2
Global Rank: G3
State Rank:
 S3
State List: None
Fed List: None
Other Status: BLM_S; SB_CalBG/RSABG
CRPR Changes:

Occurrence Data from the CNDDB
Total Occurrences: 40
Element Occurrence Ranks:
   Excellent (A) 17
   Good (B) 12
   Fair (C) 2
   Poor (D) 1
   None (X) 0
   Unknown (U) 8

Location
California Endemic:  False
California Counties and Islands: Name (Code)
Inyo (INY), San Bernardino (SBD)
Quads: Name (Quad Code)
Calvada Springs (3511588), Kingston Peak (3511568), Kingston Spring (3511558), Mound Spring (3611518), Nopah Peak (3611611), Resting Spring (3511682), Shenandoah Peak (3511575), Sixmile Spring (3611621), Stewart Valley (3611622), Stump Spring, Nev. (3511587), Tecopa Pass (3511671), Twelvemile Spring (3611612), West of Shenandoah Peak (3511576)

Threat List Data from the CNDDB

Threat List Total: 6
EOs with Threat Listed: Total EOs % of EOs
31 78 %
ORV activity 24 60%
Non-native plant impacts 21 52%
Road/trail construction/maint. 10 25%
Development 7 17%
Agriculture 3 7%
Vandalism/dumping/litter 1 2%

Notes
Threatened by solar energy and other development. Possibly threatened by vehicles and non-native plants. Threatened in NV. See Aliso 7(3):357-360 (1971) for original description, and Phytologia 66(4):363 (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 15 January 2025].