]> GH barcode-00449862 United States of America Michigan Case Twp., channel between Lower Barnhart Lake and Lake Nettie along Co. Rt. 638 ca. 7.0 miles SE. of Millersburg, SW 1/4 Sec. 19, T34N, R4E Potamogeton friesii Ruprecht Ruprecht 2021-02-11 13:08:47 C. B. Hellquist & G. E. Crow