516 
Dclertd BERGecnscsacsee steers 105 
Scleria flaccida SrgUD........ 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. Dv............ 497 
Scolochloa LINK...........0045 79 
—arundinacea (LILI.)...... 79 
Scolochloa festucacea Link... 80 
Scordium CAv..... a adits 455 
ISCOTTG: RAB ia had ood Sis trea 177 
——minima (MARSH.)........ 178 
— ovata (MILL.)............ 178 
Scorodopia MOENCH.......... 455 
Scorodosma BUNGE........... 390 
Scorzonera BAILL............. 565 
Scrofularing HEER...........5 460 
Scrophularia LINN...........- 459 
ScrophularialanceolataPuRsH 460 
—marylandica LINN...... 460 
Scrophularia nodosa var. mary- 
landica (LINN.)........- 460 
Scrophulariaceae .......... 459 
SCUTIA;RARS. pauskneseseneeeeads 105 
Scutellarea LINN... .2.000 000065 447 
Scutellaria ambigua Nurt.... 447 
Scutellaria galericulata LINN... 447 
—lateriflora LINN......... 448 
—parvula MICHX.......... 447 
Scytophyllum S. and Z........ 348 
Selatium G.DON........ Se eacatacs 418 
Selotinus OERST.............. 489 
Selunia ALEF.............0008 315 
Selwynnia F. MuLL........... 251 
Semidopsis ZUM...... ........ 189 
Semeiocardium HAssk........ 338 
Senecillis GAERTN............ 554 
Senecio BAILL.........-se000 553 
SéneCi6 WINN: dacangaceess een 553 
—atriplicifolius (LINN.).... 555 
Senecio atriplicifolius var. ren- 
iformis HooK............... 555 
Senecio aureus LINN.........-- 556 
Senecio aureus var. balsamitae 
and Giixocsdaimaacews 557 
Senecio aureus var. gracilis 
THOOR ys. accies hae edaiaues 557 
Senecio aureus var. obovatus 
(MOULD )is% ie eye iaaisecien 507 
——aureus var. pauperculus 
(MACHER: ) 2 aisiaiie seca lgieln 556 
Senecio aureus UPH........... 556 
—hbalsamitae MUHL....... 557 
—ciliatus WALT.......... 558 
—-elliottii T.andG........ 557 
——fastigiatus SCHWEIN.... 556 
——gracilis PURSH.......... 556 
——hieracifolia LINN....... 553 
Senecio integerrimus NUTT..... 556 
Senecio integrifolius var. het- 
erophyllus NuTY...... 556 
METASPERMAE OF THE MINNESOTA VALLEY. 
Senecio lugens RICH............ 
Senecio lugens var. hookeri 
——lugens var..parryi EAT.. 
——obovatus MUHL......... 
Senecio ovatus (WALT.) ........ 
——palustris (LINN.)........ 
Senecio palustris var.congestus 
; HOO R ercccscsisracnale taieiarade 
——pauperculus MICHX..... 
——plattensis NUTT........ 
Senecio reniformis (MUBL.).... 
——tomentosus MICHX....... 
Sénéea DO... caressa. a2se sac 
——officinalis SPACH........ 
Senna GAERTN.. 
Sena, CAV acienasawn acaeeaccce 
Septas H0OURcc.0s acacia 
Seymeria auriculata SPRENG. 
Serrafalcus PARLAT.......... 
Serapias repens CHAIX........ 
Sericocarpus NEBS............ 
——asteroides BSP......... 
——conyzoides NEES........ 
Serpicula occidentalis PURSB. 
——Verticillata MUHL...... 
Serratula compta DRYAND.... 
——noveboracensis LINN.... 
——praealta LINN.......... 
—-—scariosa LINN........... 
—spicata LINN............ 
—squarrosa LINN......... 
Sesleria NUTT ................ 
Shepherdia NUTT............. 
—argentea NUTT......... 
Shortia dentata RAF......... 
Shuttleworthia MEISSN....... 
Sibbaldia LINN............... 
Sicyoides TOURN.............. 
—angulata MOENCH...... 
Sicyos LINN... 0. e sce cece ee ee 
Sicyos acutus RAF............ 
Sicyos angulatus LINN......... 
Sicyos lobatus MICHX......... 
Sida dioica CAV............... 
Sieberia SPRENG............-. 
Sieversia WILLD.............. 
SIGTMAri a TAR ciecas ec. atscripesiess 
SUGMUCEAG: cioccie dated catewdierces 
_——nivea DC 
Silene stellata (LINN.).......... 
——virginica LINN.......... 
Siliquaria ForsK............06 
Silphium BAILL.......... .... 
Silphium LINN.....6.cc0eeeees 
Silphium conjunctum WILLD. 
——erythrocaulon BERNH... 
——gummiferum EvL....... 
——hornemanni SCHRAD.... 
Silphium integrifolium Micux. 
