CPC Plant Profile: Churchill Narrows Buckwheat
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Plant Profile

Churchill Narrows Buckwheat (Eriogonum diatomaceum)

Flowers of Eriogonum diatomaceum Photo Credit: Gary Monroe
  • Global Rank: G1 - Critically Imperiled
  • Legal Status: N/A
  • Family: Polygonaceae
  • State: NV
  • Nature Serve ID: 138475
  • Date Inducted in National Collection: 12/01/2021

Eriogonum diatomaceum is only known from a few scattered populations in the Churchill Narrows area south of Fort Churchill State Park in Lyon County, Nevada. It is considered a sensitive species in Nevada and is also a candidate for federal endangered listing (Flora of North America Committee, 2005). E. diatomecium is a herbaceous perennial, the flowers are creamy-white with greenish-tan to reddish midribs (Reveal et al. 2002).

Participating Institutions
Nature Serve Biotics
  • 05/02/2017

Populations of Eriogonum diatomaceum are intrinsically highly vulnerable, and are localized on small, scarce patches of diatomaceous clay soil of high mining interest within a range covering less than 10 square km. Other threats include off-road vehicles and soil disturbance by grazing livestock.

Rita Dodge
  • 01/01/2010

Mineral exploration and mine development OHVs Livestock trampling Road construction and maintenance Rabbit herbivory

Rita Dodge
  • 01/01/2010

One population

Rita Dodge
  • 01/01/2010

Herbivory on Eriogonum diatomeceum (J. Reynolds, and J. Picciani. 2002).

Rita Dodge
  • 01/01/2010


Rita Dodge
  • 01/01/2010

Habitat protection and monitoring of population data Ex-situ seed conservation Propagation protocol development Reintroduction research

Rita Dodge
  • 01/01/2010

Seed conservation Propogation protocol research Reintroduction research


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Taxon Eriogonum diatomaceum
Authority Reveal, J. Reynolds & Picciani
Family Polygonaceae
CPC Number 44619
ITIS 823819
Common Names Churchill Narrows buckwheat
Associated Scientific Names Eriogonum diatomaceum
Distribution E. diatomaceum is only known from the Churchill Narrows area in the Pine Nut Mountains in Lyon County, Nevada.
State Rank
State State Rank
Nevada S1

Found on chalky, diatomaceous outcrops.

Ecological Relationships


Common Name Name in Text Association Type Source InteractionID

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