Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia to Washington, east across Canada to the Great Lakes region and northeastern North America.
Habitat: Cold, clear water to 2 meters deep.
Flowers: June-September
Origin: Native
Growth Duration: Perennial
Conservation Status: Threatened in Washington (WANHP)
[none provided]
PNW Herbaria: Specimen records of Sparganium fluctuans in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Sparganium fluctuans checklist entry
OregonFlora: Sparganium fluctuans information
E-Flora BC: Sparganium fluctuans atlas page
CalPhotos: Sparganium fluctuans photos