INDEX. 



8i: 



Silphiuiu integri folium A'ar. 



laeveT. andG n.Ti 



ISUphiinn laciniatnm Linn 5.'52 



Silpliium laevigatum PuRsii.. 5.S2 



SUphiiim perfoUatum Linn 5."^1 



Sllphiuni seabrum Mokncii. . . 531 



-speciosum Nutt 532 



spicatum Poir 532 



SiJphium terebint h i ii a c e u m 



jAC(i 532 



Silpliium tetragonumMoENCn 531 



SiphisiaRAF 201 



glabra Raf 202 



sipho Klotzsch 202 



Sisarum Tausch 39 1 



Sisarum Toukn 396 



Sismondea Delfon 160 



Sison canadense Linn 397 



marginatum Michx 391 



trifoliatum Michx 392 



Sisymbrella Sfacii 257 



Sisymbrium LiNN 257 



Sisymbrium arabidioidosHooK 2*15 



brachycarpum H. and A. 258 



californicum Wats 258 



canescens Benth 258 



canescens var. brachycar- 



pum Ufh 25S 



canescens IS utt 258 



canescens var. brevipes 



T. and G 258 



dentatum Tokh 258 



,Sis!imbrium ha I'twe gi a n u m 



FoURN 258 



Sisymbrium hispidum Porn... 259 



humifusum J. Vahl. . . 265 



iucisum var. harlwegia- 



num Wats 258 



ISisymbriwn multifidmn (PuHSll) 258 



Sisymbrium nasturtiumWALT. 261 



palustre Leys 2t;0 



pinnatum Greene 258 



sophia G ray 258 



Sisy r inchiion LiiU'S ]61 



Sisyrinchium anceps Cav 162 



angustifolium Auct. in 



part 161 



Sisyrinchium a n gust ifo I i um 



Mill 162 



Sisyrinchium b e r m u d i a n a 



Micnx 162 



gramineum Lam 162 



Sisyrinchium m uc ro n a t u m 



Micnx 161 



Sitanion Raf 87 



elymoides Raf 87 



Sltocodium Salisr 151 



Siura Linn 396 



angustifolium Linn 396 



Slum canadense Lam 397 



Slum cicutaefolium K. C. Gmel. . 396 



Slum lyjdouglasii DC 395 



latilolium Bkjel 396 



lineare Michx .396 



-52 



S i u m pu m i 1 u m N I'TT 396 



rigidius Linn. 391 



rugosum Raf 396 



suave Walt 396 



— — tenuifolium Mriii.. 396 



Skotlt/.ia Hassk 1:56 



Smilucina Desk 1.52 



bifolia Desk ]52 



bifolia var. cauadense 



Gray ]52 



boreal is Pu Roll 151 



canadense Puusii ].52 



ciiiata Piusn ]54 



racemos I Desk ]54 



— stellata Desf 1.53 



Smilacina trifolia Desf ],53 



Smilax Linn 1 57 



Smilax aspera DC 158 



caduca Linn 158 



ciiiata Stefd ]58 



Smilax echirrata Wats 158 



Smilax grand i folia IUxkl . 1,57 



Smilax herbacea Linn 158 



Smilax herbaca var. pulveru- 



lenta Gijay 15S 



herbacea var. pulveru- 



lenta (.Michx.) 1.59 



Smilax hispi(Ja MuHL 157 



Smilax peduncularis Muhl. . . ],58 



pulverulenta Micnx .... 158 



quadrangularis .MniiL.. 158 



Smilax rot nndi'f olid LiXN 158 



Smilax rotund i folia VVillu. . . 157 



Smyi'nium aur(>um Linn .392 



barbinode MuiiL .393 



— — cordatum Walt 393 



integerrimum LiXN. ... 395 



luteum Muhl 392 



nudicanle Pintsii .390 



trifoliatum MriiL 393 



Solanaceae 456 



Solanilcs 456 



Solamnn LxyiN . . 4.58 



SoIanumcrenato-dcnlaluii.DC 459 



S(jlanum nigrum Linn 459 



Solanum pterocaulon DC 459 



ptycanthum DC 459 



Soleirolia Gaudich ]99 



Solenachne Steud ()9 



Solenostigraa PJndl 194 



Solidago Kuntze 516 



Sdlidago Linn. 508 



Sulidago altis>^ima Ait 512 



altissima T. and G 51^ 



amplexicaulis Makt.... .509 



angulata Sfreng 512 



arguta T. and G. 512 



arguta var. junceaGKAY 512 



aspera Ait 512 



asperata Puiisii 512 



asperata Soland 512 



asperula Desf 512 



Solidago cacsia Linn 514 



c((n((densis Linn 510 



