tokens: Common trees include bald cypress ( " Taxodium distichum " ) , green ash ( " Fraxinus pennsylvanica " ) , sweetgum ( " Liquidambar styraciflua " ) , water tupelo ( " Nyssa aquatica " ) , swamp chestnut oak ( " Quercus michauxii " ) , willow oak ( " Quercus phellos " ) , swamp laurel oak ( " Quercus laurifolia " ) , and hornbeam ( " Carpinus caroliniana " ) .