]> GH barcode-01688946 United States of America Oklahoma Lake of the Arbuckles at the boat launching ramp, Chickasaw Natl. Recreation Area, 7 miles SW. of Sulphur, R3E, T1S, Sec. 31 Potamogeton nodosus Poiret Poiret 2020-04-15 13:38:24 C. B. Hellquist [data not captured]