Nevada Fish & Wildlife Office
Pacific Southwest Region

Churchill Narrows buckwheat
(Eriogonum diatomaceum)

Class: Dicotyledoneae
Order: Polygonales
Family: Polygonaceae
Genus: Eriogonum
Species: diatomaceum
   
Habitat: dry, relatively barren and undisturbed, clay to silty deposits
 

Official Status:

Candidate
 

Life History:

Low, loosely branched perennial mat 0.5-2.5 dm across from a stout woody taproot; leaves sheathing 1.5-4 cm up the stem, stalked, blades elliptic, mostly 0.8-2 x 0.5-1.2 cm, densely grayish-tomentose; flowering stems scapiform, mostly 0.5-1.5 dm long, white-tomentose, each with a single head of creamy-white flowers with greenish-tan to reddish markings.

 

Distribution and Habitat:

 

All known occurrences are in the Churchill Narrows area of Lyon County, Nevada.

Dry, relatively barren and undisturbed, white to yellowish tan, often gysiferous, clay to silty diatomaceous deposits of the Coal Valley Formation, with a variable volcanic cobble overburden, on rounded knolls, low ridges, slopes, and especially small drainages on all aspects at elevations of 1300-1410 m

 

Threats:

 

The loss of habitat by recent agricultural and municipal development activities, off-road vehicles and soil disturbance by grazing livestock

 

Actions / Current Information:

 

Date Citation Title
9/25/2014 79 FR 57032 57041 Federal Register - 12-month finding on a petition to list the plants Churchill Narrows buckwheat and Las Vegas buckwheat as endangered or threatened species Federal Register
9/23/2014   News Release - Endangered Species Act Protection Not Warranted for Two Species of Buckwheat in Nevada New Release
9/23/2014   Endangered and Threatened Wildlife and Plants; 12-Month Finding on a Petition to List Petition
9/23/2014   Frequently Asked Questions FAQ
9/23/2014   Species Report for Churchill Narrows buckwheat (1.1MB PDF)Species Report
11/09/2009 74 FR 57803 57878 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
12/10/2008 73 FR 75175 75244 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule
12/06/2007 72 FR 69033 69106 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule
09/12/2006 71 FR 53755 53835 Review of Native Species That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
05/11/2005 70 FR 24869 24934 Endangered and Threatened Wildlife and Plants; Review of Native Species That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule
     
     
Last updated: September 25, 2014