]> GH barcode-01543737 United States of America South Carolina at boat ramp, east side of Savannah River at Johnson's Landing. terminus of Johnson's Landing Rd off Sec Hwy 102, 4.9 air miles south-southwest of downtown Martin Cayaponia quinqueloba (Rafinesque) Shinners (Rafinesque) Shinners 2020-08-05 13:17:20 J. B. Nelson