Distribution: Known in Washington only from Skamania County;
Habitat: Freshwater intertidal zone on mudflats. British Columbia south to Oregon; circumboreal.
Flowers: June-August
Origin: Native
Conservation Status: Review Group 1 in Washington (WANHP)
[none provided]
PNW Herbaria: Specimen records of Myriophyllum ussuriense in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Myriophyllum ussuriense checklist entry.
E-Flora BC: Myriophyllum ussuriense atlas page.
CalPhotos: Myriophyllum ussuriense photos.
USDA Plants: Myriophyllum ussuriense information.