]> GH barcode-01688980 United States of America Oklahoma Quanah Lake at recreation area, Witchita Mts. Nat. Wildlife Refuge, ca. 5.5 miles north of Cache, Sec. 23, T3N, R14W Potamogeton nodosus Poiret Poiret 2020-04-16 15:02:51 C. B. Hellquist & L. Crouch