Origin: Native
Conservation Status: Not of concern
[none provided]
Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Montana, Colorado, Utah, and Arizona, east across the northern Great Plains to the Great Lakes region and eastern North America.
Occurring west of the Cascades crest in Washington; Washington to Baja California, east to the Atlantic Coast.PNW Herbaria: Specimen records of Najas in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Najas checklist entry
OregonFlora: Najas information
E-Flora BC: Najas atlas page
CalPhotos: Najas photos