Leymus
wildrye
7 species
1 subspecies and varieties
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Leymus cinereusGreat Basin lyme grass
Distribution: East of the Cascades in Washington; central and western North America.
Habitat: Sagebrush-steppe, arid grasslands, forest edges, and other dry, open areas in the intermountain west.
Origin: Native
Flowers: June-July
Leymus condensatusgiant wildrye
Origin: Native
Leymus flavescenssand lyme grass
Origin: Native
Flowers: June - July
Leymus mollisAmerican dunegrass
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
ssp. mollis – yellow ryegrass
Leymus racemosusmammoth lyme grass, mammoth wildrye
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
Leymus triticoidesbeardless lyme grass, beardless wildrye
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and Texas.
Origin: Native
Flowers: June-August
Leymus ×vancouverensisVancouver wildrye
Origin: Native