Potamogeton pectinatus subsp. mongolicus (A.Benn.) Volobaev = Stuckenia pectinata (L.) Börner
English:
pectinatus,-a,-um;

https://archive.org/stream/#page/75/mode/2up
homotypic synonyms:
Potamogeton pectinatus var. mongolicus A.Benn.; Stuckenia mongolica (A.Benn.) Klinkova;

protologue: Sibir. Biol. Zhurn. 1991(5): 75 (1991)

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