Page author: David Giblin
Persicaria punctata
dotted knotweed, dotted smartweed, water smartweed

Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to the Atlantic Coast.

Habitat: Lake and pond shores, marshes, and wet forests.

Flowers: June-September

Origin: Native

Growth Duration: Annual, Perennial

Conservation Status: Not of concern

Pollination: Bees, flies


[none provided]

Accepted Name:
Persicaria punctata (Elliott) Small
Publication: Fl. S.E. U.S. 1903.

Synonyms & Misapplications:
Polygonum acre Kunth
Polygonum acre Kunth var. leptostachyum Meisn.
Polygonum punctatum Elliott [HC, ILBC4, JPM]
Polygonum punctatum Elliott var. confertiflorum (Meisn.) Fassett [KZ99]
Polygonum punctatum Elliott var. ellipticum Fassett
Additional Resources:

PNW Herbaria: Specimen records of Persicaria punctata in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Persicaria punctata checklist entry.

OregonFlora: Persicaria punctata information.

E-Flora BC: Persicaria punctata atlas page.

CalPhotos: Persicaria punctata photos.

USDA Plants: Persicaria punctata information.

15 photographs:
Group by