Surania Family, 



Sweet Bay, 



Sweet Clover, 



Sweet Fern, 



Sweet Flag, 



Sweet Gum, 



Sweet Potato, 



Sweet-scented Grass, 



Sweet-scented Shrub, 



Swietenia, 



Sycamore, 



Syena, 



ji>i/mphoria, 



Symphoricarpus, 



Symplocarpus, 



Symplocine^, 



Symplocos, 



Syringa, 



Talinum, 



Tanacetum, 



Tansy, 



Tape-grass, 



Taraxacum, 



Tare, 



Taxine^, 



Taxodium, 



Taxus, 



Tecoma, 



Telanthera, 



Tephrosia, 



Terminalia, 



Tetragonotheca, 



Tetranthera, 



Teuerium, 



Thalia, 



Thalictrum, 



Thaspium, 



Theophrasta Family, 



theophrastace^, 



Thermopsis, 



Thesium, 



Thistle, 



Thorn-Apple, 



Thorough wort, 



Thuja, 



THYMELEACE^, 



Thyrsanthus, 



Thvsanella, 



TiaVella, 



Tiedemannia, 



Tilia, 



TILIACE^, 



Tillandsia, 



Timothy, 



Tiniaria, 



Tipularia, 



Titi, 



Toad-Flax, 



Tobacco, 



Tofieldia, 



