]> GH barcode-01626997 United States of America Oklahoma on the west side of Rtes. 87 & 259 at the extreme SW 1/4 of Sec. 32, T8S, R24E Myriophyllum pinnatum (Walter) Britton (Walter) Britton 2020-05-15 09:13:02 C. B. Hellquist & L. Crouch