Synonyms
Potamogeton perfoliatus var. lanceolatus J.W.Robbins
Spirillus perfoliatus var. richardsonii (A.Benn.) Nieuwl.
Potamogeton sachalinensis (H.Lév.) H.Lév.
Potamogeton perfoliatus var. richardsonii A.Benn.
Potamogeton perfoliatus var. sachalinensis H.Lév.
Potamogeton perfoliatus subsp. richardsonii (A.Benn.) Hultén