Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the Atlantic Coast.
Habitat: River, stream, lake, and pond margins in water to 2 meters deep to adjacent moist uplands.
Flowers: July-October
Origin: Native
Conservation Status: Not of concern
[none provided]
PNW Herbaria: Specimen records of Persicaria amphibia in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Persicaria amphibia checklist entry.
E-Flora BC: Persicaria amphibia atlas page.
CalPhotos: Persicaria amphibia photos.
USDA Plants: Persicaria amphibia information.