]> GH barcode-00466654 United States of America Arkansas NNE of the town of Mena, 2.72 km N of U. S. routes 71, 270 (and 1.92 km N of confluence with Johnson Creek) on road along Fourche Le Face River. Callitriche heterophylla Pursh Pursh 2021-03-03 19:05:25 D. E. Boufford, V. M. Bates & E. W. Wood