Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains, Great Plains, and Great Lakes region.
Habitat: Usually in clay soils in riparian areas.
Flowers: May-July
Origin: Native
Conservation Status: Not of concern
[none provided]
PNW Herbaria: Specimen records of Elymus lanceolatus ssp. riparius in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Elymus lanceolatus ssp. riparius checklist entry
OregonFlora: Elymus lanceolatus ssp. riparius information
E-Flora BC: Elymus lanceolatus ssp. riparius atlas page
CalPhotos: Elymus lanceolatus ssp. riparius photos