]> GH barcode-01572839 United States of America Michigan stream between Lake Nettie and Lower Barnhart Lake, Sec. 30, T34N, R4E, south of Co. Rt. 638, Case Twp. Potamogeton gramineus Linnaeus Linnaeus 2021-02-11 13:29:17 C. B. Hellquist & C. E. Hellquist