Origin: Introduced
Conservation Status: Not of concern
[none provided]
 Occurring chiefly west of the Cascades crest in Washington; southern British Columbia to Oregon, east to Idaho, also in scattered locations across North America.
   Occurring chiefly west of the Cascades crest in Washington; southern British Columbia to Oregon, east to Idaho, also in scattered locations across North America. Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
   Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast. Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
   Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast. Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
   Occurring chiefly west of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast. Occurring chiefly west of the Cascades crest and east in the Columbia River Gorge in Washington; Alaska to California, east to Idaho and Montana, also in eastern North America.
   Occurring chiefly west of the Cascades crest and east in the Columbia River Gorge in Washington; Alaska to California, east to Idaho and Montana, also in eastern North America.PNW Herbaria: Specimen records of Fallopia in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Fallopia checklist entry
OregonFlora: Fallopia information
E-Flora BC: Fallopia atlas page
CalPhotos: Fallopia photos