]> GH barcode-01924392 United States of America Arkansas Ouachita Mountains: Ouachita National Forest: N-facing wooded slope and small spring on Big Fork Creek, about 18 miles S. of Mena Ageratina altissima (Linnaeus) R. M. King & H. Robinson (Linnaeus) R. M. King & H. Robinson 2021-02-08 15:42:15 A. McWilliam