]> GH barcode-01564702 United States of America Michigan East Twin Lake ca. 4 km northeast of Carp Lake, Sect. 7, T38N, R3W Potamogeton epihydrus var. nuttallii (Chamisso & Schlechtendal) Fernald (Chamisso & Schlechtendal) Fernald 2021-02-11 11:20:34 C. B. Hellquist & R. R. Haynes