]> GH barcode-01564706 United States of America Michigan stream at SE corner of Sec. 21, T33N, R4E, ca. 7.0 miles SE of Millersburg Potamogeton epihydrus var. nuttallii (Chamisso & Schlechtendal) Fernald (Chamisso & Schlechtendal) Fernald 2021-02-11 06:24:32 C. B. Hellquist & R. R. Haynes