]> GH barcode-01695676 United States of America Michigan Black Mallard River E of Rt. 23, 1 mi S of Grace, NE 1/4, Sec. 1, T36N, R3E, Bearinger Twp. Potamogeton pusillus Linnaeus Linnaeus 2021-02-16 06:30:28 C. B. Hellquist [data not captured]