Page author: David Giblin
Polygonum achoreum
Blake's knotweed
Specimens
Photos
Distribution: Reported for Washington, but specimen from Pierce County is likely a misidentification; Alaska to Oregon and Nevada, east across North America to the Atlantic Coast.
Habitat: Disturbed areas.
Flowers: May-July
Origin: Native
Growth Duration: Annual
Conservation Status: Not of concern
Pollination: Bees, flies
Description:
[none provided]
Accepted Name:
Polygonum achoreum S.F. Blake
Publication: Rhodora. 19: 232. 1917.
Publication: Rhodora. 19: 232. 1917.
Synonyms & Misapplications:
Polygonum erectum L. ssp. achoreum (S.F. Blake) Á. Löve & D. Löve
Additional Resources:
PNW Herbaria: Specimen records of Polygonum achoreum in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Polygonum achoreum checklist entry
OregonFlora: Polygonum achoreum information
E-Flora BC: Polygonum achoreum atlas page
CalPhotos: Polygonum achoreum photos
7 photographs:
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