Distribution: Occurring east of the Cascades crest in Washington; British Columbia to California, east to the Great Plains.
Habitat: Dry to moist forest openings and meadows from moderate elevations to the subalpine.
Flowers: June-August
Origin: Native
Growth Duration: Annual
Conservation Status: Not of concern
[none provided]
PNW Herbaria: Specimen records of Polygonum sawatchense in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Polygonum sawatchense checklist entry
OregonFlora: Polygonum sawatchense information
E-Flora BC: Polygonum sawatchense atlas page
CalPhotos: Polygonum sawatchense photos