Potamogeton epihydrus var. nutallii (Chamisso & Schlechtendal) Fernald

Potamogeton epihydrus var. nutallii (Chamisso & Schlechtendal) Fernald is a synonym sensu TROPICOS of:

Potamogeton epihydrus Rafinesque, an accepted species name sensu FNA Ed. Comm., 2000.