]> GH barcode-01564700 United States of America Michigan Worchester Lake ca. 12.9 N.E. of Singleton, Sect. 22, 23, 26, 27, T47N, R16W Potamogeton epihydrus var. nuttallii (Chamisso & Schlechtendal) Fernald (Chamisso & Schlechtendal) Fernald 2021-02-11 11:16:25 C. B. Hellquist & R. R. Haynes