INDEX. 



481 



r»o>;. 



Sison 266 



aureus 271, 272 



bulboium 283 



Canadense. 269 



capillaceus 256 



integerrimus 271 



marginalus 278 



SlSYMBRE^ 59 



Sisymbrium 59 



arabidoides 54 



dentalum 54 



officinale 59 



Thaliana 60 



SiUM 268 



Canadense 269 



denliculalum 278 



latifolium 268 



lineare 268 



rigidius 278 



ienuifolium 269 



tricuspidatnm 278 



Sloe 304 



Smyrnium 270 



atropurpureum . - 272 



aureum 271, 273 



barbinode 273 



cordala 270 



integerrimnm 27 1 



trifolialum, 270 



Snap-weed 12 



Sneeze-weed 389 



Snowberry 295 



Soapwort 103 



SOLEA 75 



concolor 76 



SOLIDAGO 356 



alussiraa 363 



arguta 362 



arguta 362 



aspera 363 



asperata 361 



axillaris -. 358 



bicolor 356 



caesia 350 



Canadensis 365 



[Flora.J 



PiOL. 



(Solidago) ciliare 362 



cinarescens 364 



confertijlora. 356 



flexicaulis 358 



gigantea 366 



giganlea 365 



graminifolia 366 



grandiflora 359 



hispida 364 



humilis 363 



lavigata 360 



lanccolata 366 



lanceolala ^. 367 



latifolia 356 



limonifolia 360 



livida 358 



Muhlenbergii 362 



noglccta 361 



nemoralis 364 



nutans. 365 



odora 364 



Ohioensis 360 



patula 301 



procera 365 



relrorsa 364 



rigida 359 



Tugosa 363 



sempervirens 360 



serotina 365 



serotina 366 



squarrosa 356 



stricta 366 



tenuifolia 366 



ulmifolia 363 



Virga-aurea 359 



SoNCHOS 420 



acuminatus 419 



acuminatus 420 



alpinus 420 



arvcnsis 421 



asper 421 



Canadensis 420 



Carolinianus 421 



ciliattis 420 



fallax 421 



63* 



Paoe. 



(Sonchus) Floridanus, 419, 420 



oleraccus 420 



oleraceus fS. 421 



pallidus 420 



spicalus 420 



spinosus 421 



spinulosus 421 



Sorbus 224 



Americana 224 



aucuparia 224 



Sophora 188 



australis 188 



alba 188 



Sowthistle 420 



Spanish Needles 389 



Spearwort 11 



Specularia 428 



pcrfoliata 428 



Speroula 106 



arvensis 106 



Canadensis 106 



rubra 106 



Spergularia 106 



arvensis 106 



rubra 106 



Spergulastrum 97 



gramineum 97 



lanceolatum 98 



Sperodle^ — 106 



SVIRMK -- 198 



Aruncus 199 



opiilifolia 193 



salicifolia 198 



stipulacea 201 



slipulata 201 



tomentosa 199 



trifoliata 200 



Spikenard 284 



Spindle-tree 141 



Spindle-tree Tribe 139 



Spring Beauty 109 



Spring Cress 56 



Spotted Wintergrceu 455 



Spurrey 106 



Squaw Huckleberry 446 



