Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Oregon, east across North America to the Atlantic Coast.
Habitat: Riverbanks, roadsides, alkali seeps, hot springs, and damp meadows.
Flowers: August-September
Origin: Native
Growth Duration: Perennial
Conservation Status: Sensitive in Washington (WANHP)
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PNW Herbaria: Specimen records of Sporobolus compositus var. compositus in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Sporobolus compositus var. compositus checklist entry
OregonFlora: Sporobolus compositus var. compositus information
E-Flora BC: Sporobolus compositus var. compositus atlas page
CalPhotos: Sporobolus compositus var. compositus photos