816 



MET A SPERM AE OF THE MINNESOTA VALLEY. 



Scleria BERG 105 



Scleria flaccida STEUD 105 



nitida WILLD 105 



Scleria triglomerata MICHX 105 



verticillata MUHL 105 



Sclerobasis CASS 553 



Sclerochloa REICH 82 



Sclerophyllum GAUD 567 



Scleropoa GRISEB 82 



Scleropus SCHRAD 215 



Sclerotheca A. D^ 497 



Scolochloa LINK 79 



arundinacea (LiLJ.) 79 



Scolochloa festucacea LINK. . . 80 



Scordium CAV 455 



Scoria RAF 177 



minima (MARSH.) 178 



oma(MiLL.) 178 



Scorodoo ia MOENCH 455 



Scorodosma BUNGE 390 



Scorzonera BAILL 565 



Scrofularina HEER 460 



Scropfiularia LINN 459 



ScrophularialanceolataPuRSH 460 



marylandica LINN 460 



Scrophularia nodosa var. mary- 

 landica (LiNN.) 460 



Scrophulariaceae 459 



Scuria RAF 105 



ScuUUarw LINN 447 



Scutellaria ambigua NUTT 447 



Scutellaria galericulata LINN. . . 447 



laterifiora LINN 448 



parvula MICHX 447 



Scytophyllum S. and Z 348 



Selatium G. DON 418 



Selotinus OERST 489 



Selunia ALEF 315 



SelwynniaF. MULL 251 



Semidopsis ZUM 189 



Semeiocardium HASSK 338 



Senecillis GAERTN 554 



Senecio BAILL 553 



Senecio LINN 553 



atriplicifplius (LiNN. ) 555 



Senecio atriplicifolius var. ron- 



iformis HOOK 555 



Senecio aureus LINN 556 



Senecio aureus var. balsamitae 



T.andG 557 



Senecio aureus var. gracilis 



HOOK 557 



Senecio aureus var. obovatus 



(MUHL.) 557 



aureus var. pauperculus 



(MiCHx) 556 



Senecio aureus UPH 556 



balsamitae MUHL 557 



ciliatus WALT 558 



elliottii T. and G 557 



fastigiatus SCHWEIN 556 



gracilis PURSH 556 



hieracif olia LINN 553 



Senecio integerrimus NUTT 556 



Senecio integrifolius var. het- 



erophyllus NUTT 556 



Senecio lugens RICH 555 



Senecio lugens var. hookeri 



EAT 555 



lugens var. parryi EAT. . 555 



obovatus MUHL 557 



Senecio ovatus (WALT.) 555 



palustris (LiNN.) 557 



Senecio palustris var.congestus 



HOOK 557 



pauperculus MICHX 556 



plattensis NUTT 557 



Senecio reniformis (MUHL.) 555 



tomentosus MICHX 556 



Senega DC 338 



offlcinalis SPACH 339 



Senna GAERTN 309 



Sen ra CAV 361 



Septas LOUR 473 



Seyrneria auriculata SPRENG. 468 



Serrafalcus PARLAT 84 



Serapias repens CHAIX 172 



Sericocarpus NEES 515 



asteroides BSP 524 



conyzoides NEES 524 



Serpicula occidentalis PURSH. 46 



verticillata MUHL 46 



Serratula compta DRY AND 504 



novebora^ensis LINN 500 



-praealta LINN 500 



scariosa LINN 504 



spicata LINN 504 



squarrosa LINN 506 



Sesleria NUTT 73 



dactyloides NUTT 73 



Shepherdia NUTT 373 



argentea NUTT 373 



Shortia dentata RAF 265 



Shuttleworthia MEISSN 442 



Sibbaldia LINN 293 



Sicyoides TOURN 493 



angulata MOENCH 493 



Sicyos LINN 493 



Sicyos acutus RAF 493 



Sicyos angulatus LINN 493 



Sicyos lobatus MICHX 493 



Sida dioica CAV 361 



Sieberia SPRENG 165 



Sieversia WILLD 299 



Sigillaria RAF 152 



Silenaceae 219 



Silene LINN 219 



alba MUHL 220 



antirrhina LINN 220 



Silene catesbaei WALT 220 



coccinea MOENCH 220 



nivea DC 220 



Silene stellata (LiNN.) 221 



virginica LINN 220 



Siliquaria FORSK 269 



Silphium BAILL 531 



Silphium LINN 531 



Silphium conjunctum WILLD. 531 



erythrocaulon BERNH... 531 



gummiferum ELL. ...... 532 



hornemanni SCHRAD 531 



Silphium integrifolium MICHX. 532 



