Potamogeton foliosus var. fibrillosus (Fernald) R.R. Haynes & Reveal
Potamogeton foliosus var. fibrillosus (Fernald) R.R. Haynes & Reveal is a synonym sensu FNA Ed. Comm., 2000 of:
Potamogeton foliosus subsp. fibrillosus (Fernald) R.R. Haynes & Reveal, an accepted subspecies name sensu FNA Ed. Comm., 2000.