]> GH barcode-02178027 United States of America Pennsylvania Huston Township; 2.7 km (1.7 miles) SW of the Union Township line, and 6.6 km (4.1 miles) SW of Penn. route 504 on U.S. route 220; SW of Unionville. Apocynum cannabinum Linnaeus Linnaeus 2021-06-11 10:31:23 D. E. Boufford & E. W. Wood