Leymus
wildrye
9 common names
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American dunegrass (Leymus mollis)
Distribution: Occurring west of the Cascades crest in Washington along the immediate marine coastline; Alaska to California, east across Canada to the Great Lakes region and northeastern North America.
Habitat: Coastal sand dunes, marshes, and headlands, where tolerant of salt water.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington along the immediate marine coastline; Alaska to California, east across Canada to the Great Lakes region and northeastern North America.
Habitat: Coastal sand dunes, marshes, and headlands, where tolerant of salt water.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Beardless lyme grass (Leymus triticoides)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and Texas.
Habitat: Dry to moist, often alkaline meadows.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and Texas.
Habitat: Dry to moist, often alkaline meadows.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Mammoth lyme grass (Leymus racemosus)
Distribution: Occurring east of the Cascades crest in Washington; central Washington to north-central Oregon, east to Wyoming.
Habitat: Sandy areas in sagebrush flats and plains.
Origin: Introduced from Eurasia
Flowers: July-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; central Washington to north-central Oregon, east to Wyoming.
Habitat: Sandy areas in sagebrush flats and plains.
Origin: Introduced from Eurasia
Flowers: July-August
Growth Duration: Perennial
Beardless wildrye (Leymus triticoides)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and Texas.
Habitat: Dry to moist, often alkaline meadows.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and Texas.
Habitat: Dry to moist, often alkaline meadows.
Origin: Native
Flowers: June-August
Growth Duration: Perennial
Giant wildrye (Leymus condensatus)
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, where native.
Habitat: Sagebrush steppe and valley bottoms.
Origin: Introduced from California
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Washington to California, where native.
Habitat: Sagebrush steppe and valley bottoms.
Origin: Introduced from California
Flowers: May-July
Growth Duration: Perennial
Great Basin wildrye (Leymus cinereus)
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the northern Great Plains.
Habitat: Sagebrush-steppe, arid grasslands, forest edges, and other dry, open areas in the intermountain west.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the northern Great Plains.
Habitat: Sagebrush-steppe, arid grasslands, forest edges, and other dry, open areas in the intermountain west.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
Mammoth wildrye (Leymus racemosus)
Distribution: Occurring east of the Cascades crest in Washington; central Washington to north-central Oregon, east to Wyoming.
Habitat: Sandy areas in sagebrush flats and plains.
Origin: Introduced from Eurasia
Flowers: July-August
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; central Washington to north-central Oregon, east to Wyoming.
Habitat: Sandy areas in sagebrush flats and plains.
Origin: Introduced from Eurasia
Flowers: July-August
Growth Duration: Perennial
Sand wildrye (Leymus flavescens)
Distribution: Occurring east of the Cascades crest in Washington; Washington to Oregon, east to Idaho.
Habitat: Sandy soils.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
Distribution: Occurring east of the Cascades crest in Washington; Washington to Oregon, east to Idaho.
Habitat: Sandy soils.
Origin: Native
Flowers: June-July
Growth Duration: Perennial
Vancouver wildrye (Leymus ×vancouverensis)
Distribution: Occurring west of the Cascades crest in Washington along the marine coast; British Columbia to California.
Habitat: Marine coastal shores.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
Distribution: Occurring west of the Cascades crest in Washington along the marine coast; British Columbia to California.
Habitat: Marine coastal shores.
Origin: Native
Flowers: May-July
Growth Duration: Perennial
