]> GH barcode-01572041 United States of America Michigan near a side pool ca. middle of inlet of small arm from Carp Lake in Sec. 23, Carp Lake Twp. ca. 1 1/2 miles SE of village of Carp Lake. Potamogeton foliosus Rafinesque Rafinesque 2021-02-11 06:49:15 R. R. Haynes