U.S. DEPARTMENT OF THE INTERIORBUREAU OF LAND MANAGEMENT
 
Print Page

Prostrate Buckwheat
(Eriogonum prociduum )
Polygonaceae

Prostrate Buckwheat; Photo Copyright 2001 John Game
Photo Copyright 2001 John Game

Description: Low, matted, perennial herb 4 - 11 inches (1-3 dm) across, growing in tufts. Leaves basal, wider at tip than at stem, 3/8 - 5/8 inches (1-1.8 cm) long, short stemed, densely white woolly. Inflorescence abruptly enlarged 3/8 - 5/8 inches (1-1.5 cm) across and bright yellow. Stems smooth, weakly erect, 3/4 - 3 inch (2-8 cm) long.

 Identifying Features:

  1. Mat forming perennial herb.
  2. 3/4 - 3 inch (2-8 cm) smooth flower stems.
  3. Bright yellow abruptly enlarged flower heads.
  4. Short leaf stalks, woolly, leaves wider at tips than at stems.

Distribution: Alturas Field Office: Lassen and Modoc counties, California, Washoe County, Nevada, and southeastern Oregon. Within the public lands administered by the Alturas Field Office, found within the Ash Valley Research Natural Area (RNA)/Area of Critical Environmental Concern (ACEC), west of Jones Lane south of Alturas, northwest of Alturas along Highway 395, and west of Three Sisters off of Centerville Road.

Surprise Field Office: Lassen and Modoc counties, California, Washoe County, Nevada, and southeastern Oregon. Within the public lands managed by the Surprise Field Office, there is one population in Nevada on private lands at upper end of Hays Canyon.

 Habitat: Dry barren rocky slopes and flats within the sagebrush-juniper to Jeffery pine forest types. Populations occur in very sparsely vegetated, shallow soiled areas at 4,600 to 8,300 feet (1402 to 2529 meters).

Flowering Period: June - July

Similar Plants: Crosby's buckwheat (Eriogonum prociduum) but it occurs in Nevada only and has woolly flower stems. Eriogonum caespitosum but it has reflexed leaf like lobes beneath flower head and prostrate buckwheat has none. Eriogonum ovalifolium, but it has oval, long narrow petioled leaves. Eriogonum douglasii, but it has a larger flower head, varying from white to yellow or reddish, with a whorl of leaves midway up the flower stem.

Status: Bureau of Land Management Sensitive, California Native Plant Society List 1B and Northern Nevada Native Plant Society Watch List.

  

Glossary of
Plant Terms

Diagram of Plant Parts

Definitions of
Plant Status

 

Field Office: Alturas

 
Last updated: 08-05-2010