Distribution: Occurring west of the Cascades crest, where known only from the Puget Sound lowlands; British Columbia to Washington, native from Texas to central and eastern North America.
Habitat: Lakes and ponds.
Flowers: May-October
Origin: Introduced from central and eastern North America
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Wind
[none provided]
Publication: Fl. Bor.-Amer. 2: 191. 1803.
PNW Herbaria: Specimen records of Myriophyllum heterophyllum in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Myriophyllum heterophyllum checklist entry.
OregonFlora: Myriophyllum heterophyllum information.
E-Flora BC: Myriophyllum heterophyllum atlas page.
CalPhotos: Myriophyllum heterophyllum photos.
USDA Plants: Myriophyllum heterophyllum information.
