Potamogeton zosterifolius subsp. zosteriformis (Fernald) Hultén

Potamogeton zosterifolius subsp. zosteriformis (Fernald) Hultén is a synonym sensu FNA Ed. Comm., 2000 of:

Potamogeton zosteriformis Fernald, an accepted species name sensu FNA Ed. Comm., 2000.