J98 



INDEX OF THE GENERA. 



Saponaria 139 



Sarracenia 217 



Saururua 163 



Saxifraga 188 



Scheuchzeria 160 



Scbizaea 386 



Schoenus 41 



ScholJera 36 



Scirpus 37 



Sclnvalbea 243 



Scleria 349 



Scleranthus 190 



Scrophularia 239 



Scutellaria 236 



Secale 65 



Sedum 195 



Senecio 305 



Sesuvium 202 



Setaria 72 



Shepherdia 376 



Sibbaldia 142 



Sicyos 362 



Sida 254 



Silene 190 



Silphium 313 



Sinapis 252 



Sison 134 



Sisymbrium 251 



Sisyrinchium 36 



Sium 136 



Smilax 373 



Smyrnium 134 



Solarium Ill 



Solidago 300 



Soncbus 278 



Soibus 202 



Spai ganium 333 



Sparganopborus 287 



Spartina 46 



Spergula 193 



Spermacoce 80 



Spigelia 106 



Spiraea 203 



Stacbys 234 



Staphyiea 141 



Statice 142 



Stellaria 191 



Stipa 48 



Streptopus 153 



Strophostyles 270 



Strutbiopterus 385 



Stylosantbes 266 



Subularia 248 



Swertia 85 



Symphoria 114 



Symplocarpus 86 



Talinum 216 



Tanacetum 287 



Taxus 377 



Tephrosia 271 



Teucnum 232 



Tbalictrum 223 



Tbapsia 138 



Tbesium 123 



Tblaspi 246 



Tbuva 361 



Tiarella 189 



T-lia 214 



Tihaea 87 



Tipularia 321 



Tofieldia 160 



Tradescantia 147 



Trichocbloa 52 



Tricliodium 49 



Trichobtema 238 



Tricu.spis 60 



Trientalis 164 



Trifolium 265 



Trislochin 160 



Trillium 161 



Triosteum 115 



Triphora 321 



Tripsacum 349 



Trisetum 62 



Triticum 65 



Trollius 225 



Tussilago 306 



Typba 333 



Ulmus 132 



Uniola 55 



L ralepis 60 



Urtica 351 



Utricularia 29 



Uyularia 153 



Vaccinium 1 79 



Valisneria 365 



Veratrum 159 



Verba*cum 106 



Verbi na 233 



Verbesina 307 



Vernonia 283 



Veronica 17 



Viburnum ..,,... 13c 



