]> GH barcode-02188949 United States of America Arkansas Ozark Plateau: Boston Mts.: Ozark National Forest-Sylamore Ranger District. Barkshed Recreational Area on North Sylamore Creek, about 10 mi. S. W. of Calico Rock. Eupatorium altissimum Linnaeus Linnaeus 2021-04-15 14:14:32 Dw. M. Moore