Page author: David Giblin
Polygonum ramosissimum
branched knotweed

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]

Accepted Name:
Polygonum ramosissimum Michx.
Publication: Fl. Bor.-Amer. 1: 237. 1803.

Synonyms & Misapplications:
(none provided)
Additional Resources:

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.

3 photographs:
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