Eriogonum
buckwheat, wild buckwheat, eriogonum, sulfur flower, umbrella-plant
20 species
25 subspecies and varieties
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Eriogonum baileyiBailey's buckwheat
Distribution: Occurring east of the Cascades crest in the central region of Washington; northern Washington to California, east to Idaho and Utah.
Habitat: Sand or gravel flats and slopes, grassland and shrub-steppe, open forest, and washes.
Origin: Native
Flowers: April-June
var. baileyi – Bailey's buckwheat
Eriogonum cernuumnodding buckwheat
Distribution: Occurring only in Franklin County, where disjunct from primary range of species; southeastern Oregon and adjacent Idaho to eastern California, also in Rocky Mountains and Great Plains.
Habitat: Sand, gravel or clay slopes and flats, shrub-steppe, and grasslands.
Origin: Native
Flowers: May-June
Eriogonum codiumbasalt desert buckwheat, Umptanum buckwheat
Distribution: Occurring east of the Cascades crest in Washington, where endemic to Benton County.
Habitat: Volcanic soils in sagebrush along the Columbia River.
Origin: Native
Flowers: May-August
Eriogonum compositumarrow-leaf buckwheat, northern buckwheat
Distribution: Occurring chiefly east of the Cascades crest in Washington; Washington to California, east to Idaho.
Habitat: Dry, open areas, rocky slopes and cliffs from low elevations nearly to the subalpine.
Origin: Native
Flowers: May-July
var. compositum – northern buckwheat
var. lancifolium – wild buckwheat
var. leianthum – smooth arrow-leaf wild buckwheat
Eriogonum douglasiiDouglas's buckwheat
Distribution: Occurring east of the Cascades crest in Washington, chiefly in the central region; Washington to California, east to Idaho and Nevada.
Habitat: Sagebrush or juniper flats to ponderosa pine forests, often on lithosol.
Origin: Native
Flowers: May-July
var. douglasii – Douglas' buckwheat
Eriogonum elatumrush buckwheat, tall buckwheat
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to southern Idaho and Nevada.
Habitat: Sand and gravel slopes and flats, grasslands, sagebrush desert, ponderosa pine forest openings, and montane ridges.
Origin: Native
Flowers: June-August
var. elatum – tall buckwheat
Eriogonum flavumyellow buckwheat
Distribution: Occurring east of the Cascades crest in southeastern Washington; Alaska to northeastern Oregon, east to the northern Great Plains.
Habitat: Open knolls in grasslands to alpine ridges and scree.
Origin: Native
Flowers: June-August
var. piperi – Piper's buckwheat, yellow buckwheat
Eriogonum heracleoidesbractless parsnip-flowered wild buckwheat, parsnip-flowered buckwheat, parsnip-flowered eriogonum
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to Montana, Wyoming and Colorado.
Habitat: Deeper soil of shrub-steppe to ponderosa pine forests and rocky ridges at middle elevation in the mountains.
Origin: Native
Flowers: May-July
Eriogonum maculatumspotted buckwheat
Distribution: Collected once (1884) in Yakima County in Washington and now considered extirpated; southeastern Oregon to southwestern Idaho, south to Baja California, Mexioca and east to New Mexico.
Habitat: Sand, gravel or clay slopes and flats, grassland, and shrub-steppe.
Origin: Native
Flowers: May-June
Eriogonum marifoliummarum-leaf wild buckwheat, mountain buckwheat
Distribution: Reported from east of the Cascades crest in Washington, but no specimens seen; central Washington to California, east to northwestern Nevada.
Habitat: Gravelly flats in lodgepole and ponderosa pine forests to alpine ridges and talus slopes.
Origin: Native
Flowers: June-August
var. marifolium – marum-leaf wild buckwheat, mountain buckwheat
Eriogonum microthecaslender buckwheat
Distribution: Occurring east of the Cascades crest in central Washington; central Washington to California, east to the Rocky Mountains.
Habitat: Sandy deserts to lower mountain slopes, chiefly with sagebrush.
Origin: Native
Flowers: June-August
var. laxiflorum – Great Basin slender buckwheat, Great Basin wild buckwheat
Eriogonum niveumsnow buckwheat
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east to Idaho.
Habitat: Sagebrush desert, dry ponderosa pine forest openings, in deep or sandy soil.
Origin: Native
Flowers: June-September
Eriogonum nudumbare-stem buckwheat, naked buckwheat
Distribution: Occurring on both sides of the Cascades crest in southern Washington; southern Washington to California and Nevada.
Habitat: Sandy or rocky places from the lowlands to subalpine.
Origin: Native
Flowers: June-August
var. nudum – barestem buckwheat, naked buckwheat
Eriogonum ovalifoliumcushion buckwheat, oval-leaved eriogonum
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
Habitat: Sagebrush deserts, juniper and ponderosa pine forests, to alpine ridges.
Origin: Native
Flowers: May-August
var. nivale – Sierra cushion buckwheat
var. ovalifolium – cushion wild buckwheat
var. purpureum – purple cushion wild buckwheat
Eriogonum pyrolifoliumalpine buckwheat, oarleaf buckwheat, Shasta wild buckwheat
Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to Idaho and Montana.
Habitat: Open, often rocky areas, from middle elevations to the alpine in the mountains.
Origin: Native
Flowers: July-September
Eriogonum sphaerocephalumrock buckwheat, round-headed eriogonum
Distribution: East of the Cascades in Washington; Chelan County, Washington south to California and east to Idaho and Nevada.
Habitat: Sagebrush or juniper flats to ponderosa pine forests at low elevations.
Origin: Native
Flowers: May-July
var. halimioides – rock buckwheat
var. sphaerocephalum – rock buckwheat
var. sublineare – scabland wild buckwheat
Eriogonum strictumstrict buckwheat
Distribution: Occurring east of the Cascades crest in Washington; Washington south to California, east to Montana, Idaho, and Nevada.
Habitat: Sandy or rocky soils, sagebrush desert to ponderosa pine forests.
Origin: Native
Flowers: May-July
var. anserinum – Goose Lake wild buckwheat
var. proliferum – strict buckwheat
var. strictum – strict buckwheat
Eriogonum thymoidesthyme buckwheat, thyme-leaf wild buckwheat
Distribution: Occurring east of the Cascades crest in central Washington; central Washington to Oregon, east to Idaho.
Habitat: Sagebrush deserts, dry ponderosa pine forest openings, and open ridges in lower mountains.
Origin: Native
Flowers: April-June
Eriogonum umbellatumsulfur buckwheat, sulfurflower
Distribution: On both sides of the Cascades in Washington; British Columbia south to California, east to Montana, Colorado and New Mexico.
Habitat: Sagebrush deserts to alpine rocky ridges.
Origin: Native
Flowers: June-September
var. devestivum – emperor's sulfur flower
var. ellipticum – sulfur flower
var. haussknechtii – sulfur flower
var. hypoleium – sulfur flower
var. majus – subalpine sulfur flower
var. sandbergii – Sandberg's sulfur flower
Eriogonum vimineumbroom buckwheat
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Idaho and Nevada.
Habitat: Sagebrush deserts and dry ponderosa pine forest openings; tolerant of dry, disturbed conditions.
Origin: Native
Flowers: June-September