]> GH barcode-01688596 United States of America Michigan Duck Bay-Lake George, St. Mary's River, Sugar Island, ca. 10.0 miles SE of Sault St. Marie, Sec. 23, T46N, R2E Potamogeton natans Linnaeus Linnaeus 2021-02-13 06:37:38 C. B. Hellquist & R. R. Haynes