Page author: David Giblin
Polygonum nuttallii
Nuttall's knotweed

Distribution: Occurring chiefly west of the Cascades crest in Washington; British Columbia south to Oregon

Habitat: Prairies, grassy balds, and forest openings at low to moderate elevations.

Flowers: May-July

Origin: Native

Growth Duration: Annual

Conservation Status: Not of concern


[none provided]

Accepted Name:
Polygonum nuttallii Small
Publication: Mongr. Amer. Sp. Polygonum. 132, plate 53. 1895.

Synonyms & Misapplications:
Polygonum douglasii Greene ssp. nuttallii (Small) J.C. Hickman [ILBC4]
Polygonum intermedium Nutt. ex S. Watson
Additional Resources:

PNW Herbaria: Specimen records of Polygonum nuttallii in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Polygonum nuttallii checklist entry.

E-Flora BC: Polygonum nuttallii atlas page.

CalPhotos: Polygonum nuttallii photos.

USDA Plants: Polygonum nuttallii information.

12 photographs:
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