]> GH barcode-01688592 United States of America Michigan S. E. portion of Twin Lakes near Twin Lakes Campground, Sect. 2, T36N, R2E, ca. 9.7 km S.E. of Alverno Potamogeton natans Linnaeus Linnaeus 2021-02-13 11:34:02 C. B. Hellquist & R. R. Haynes