]> GH barcode-01564012 United States of America Ohio along edge of Nettle Lake, NE 1/4 Sec. 23, T9S, R1E, Northwest Twp., ca. 9 mi. W of Pioneer. Potamogeton amplifolius Tuckerman Tuckerman 2021-04-21 11:12:01 R. L. Stuckey