Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
Habitat: Disturbed areas, often where wet, from low to middle elevations.
Flowers: July-September
Origin: Native
Growth Duration: Annual
Conservation Status: Not of concern
[none provided]
PNW Herbaria: Specimen records of Polygonum ramosissimum in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Polygonum ramosissimum checklist entry.
OregonFlora: Polygonum ramosissimum information.
E-Flora BC: Polygonum ramosissimum atlas page.
CalPhotos: Polygonum ramosissimum photos.
USDA Plants: Polygonum ramosissimum information.