Potamogeton vaginatus f. helveticus (G.Fisch.) G.Fisch. = Stuckenia pectinata (L.) Börner
English:
vaginatus,-a,-um;

https://archive.org/stream/#page/119/mode/2up
homotypic synonyms:
Potamogeton helveticus (G.Fisch.) W.Koch; Potamogeton vaginatus subsp. helveticus (G.Fisch.) Schinz & Thell.; Potamogeton vaginatus var. helveticus G.Fisch.; Stuckenia helvetica (G.Fisch.) Holub;

protologue: Mitt. Bayer. Bot. Ges. 3-5: 119 (1914)

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