Distribution: Occurring west of the Cascades crest in Washington, where known only from Wahkiakum County. British Columbia to Oregon; also in Eurasia.
Habitat: Freshwater intertidal zone on mudflats. British Columbia south to Oregon; circumboreal.
Flowers: June-August
Origin: Native
Growth Duration: Perennial
Conservation Status: Review Group 1 in Washington (WANHP)
Pollination: Wind
[none provided]
Publication: Bull. Acad. Imp. Sci. Saint-Pétersbourg 19(2): 182. 1873.
PNW Herbaria: Specimen records of Myriophyllum ussuriense in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Myriophyllum ussuriense checklist entry.
OregonFlora: Myriophyllum ussuriense information.
E-Flora BC: Myriophyllum ussuriense atlas page.
CalPhotos: Myriophyllum ussuriense photos.
USDA Plants: Myriophyllum ussuriense information.
