]> GH barcode-01564456 United States of America Oklahoma on south side of road ca. 0.2 mile east of entrance to Tishomingo Nat'l Wildlife Refuge, east of Rte. 99, ca. 1.0 mile south of Tishomingo, Sec. 17, T4S, R6E Potamogeton diversifolius Rafinesque Rafinesque 2020-03-16 19:28:40 C. B. Hellquist & L. Crouch