]> GH barcode-01572838 United States of America Michigan McIntosh Lake, ca. 3.0 miles SE of Millersburg, on Co. Rte. 638, Sec. 25, T34N, R3E Potamogeton gramineus Linnaeus Linnaeus 2021-02-11 08:27:31 C. B. Hellquist & R. R. Haynes