Sphaeroschoenus NEEs....... 
Sphaerostigma ENDL.......... 
Spheuocleaceae MART........ 
Sphondylium Tourn......... 
Spiesia NECK 
Splesia lamberti (PURSH)..... : 
—splendens (DOUGL.)...... 
Spiloxene SALISB........... .. 
Spiraea LINN x chro 
Spiraea amoena Rar. euceutarscengh 
——caroliniana MARSH..... 
—carpinifolia WILLD...... 
——ciliata RAF....... ae 
——ferruginea RAF.... ..... 
—-glomerata RaF...... dag 
so-=Ob0Vata, RAP iieaic ote 
——opulifolia LINN......... 
rosea RAF..........- 0... 
Spiraea salicifolia LINN........ 
——tomentosa LINN.......... 
MARSH: ¢ anehtioscescestn 
Spiranthes L.C. RIcH......... 
—cernua RIcH............ 
—gemmipara LINDL...... 
——gracilis BIGEL 
_ ——romauzowiana CHAM. ... 
SPW LUST GA Yew cinsac- coax seces 
Spirodela SCHLEID........... 
—polyrhiza SCHLEID..... 
Splitgerbera Miq............. 
Sporobolus R. BR..........---- 
——uasper (MICHX.).......... 
——cryptandrus (TORR.)..... 
cuspidatus (TORR.) 
—depauperatus (TORR.).... 
— heterolepis GRAY......... 
—Junceus (MICHX.).. 
—vaginaeflorus (TORR. a 
Sportella HANCE............. 
Stachys LINN. 
Stachys arvensis WALT....... 
Stuchys aspera MICHX......... 
Stachys foeniculum PursH... 
——hispida Purso.......... 
Stachys palustris LINN. ........ 
Stachys palustris var. aspera 
GRA ess 
Staphylea LINN.............-. 
—trifolia LINN............ 
Staphyleaceae.............. 
Stapbylodendron Toukn..... 
—trifoliatum MOENCH ... 
Staphysagria SPACH.. 
Starkea pinnata Nurr.. 
Staurogeton trisulcus Scuur. 
Steganotaenia HOcHSsT....... 
Steironema RAF. Dalaninatat 
—ciliatum (LINN. } ana ecabs 
—lunceolatum var.hybr idum 
(MicHx.) 
Steironema longifolia RAF... 
Stetronema quadriflorum (Sits. ) 
Stellaria LUD Wa, cccacaes cox chs 
INDEX. 
104 9 Stellavria verna (LINN.)...... : 
381 Stellaria vernalis WieG....... 
494 Stellaria B.and H............ 
389 ——biflora PURSH .......... 
pee ——boréalis var. Bus ie ses a 
323 ——crassifolia EHRH........ 
322 ——crassifolia WATs..... .. 
159 === plauca MEY a sss5 omnes 
282 ——graninea RIGEL........ 
US? ——longifolia MUHL........ 
281 ——longifolia Roru........ 
282 ——longipes GOLDIE........ 
282) «- Stellariaceae................ 
282 Stellularia LInn.. a 
DEB ——crassifolia (Earn. oa asienosines 
282 Stellularia iongifolia (MUHL.).. 
281 -—longipes (GOLDIE)....... 
282 Stenactis NEES.............. 
282 ——ambigua DC..... ...... 
282 annua DCviscs. s245 4a 055 
——dubia Cass.............. 
282s ----strigosa DC............. 
WO Stenanthium A. GRAY........ 
170 =Stengelia SCH.-BIP............ 
171 = Stenocephalum Scu.-Bir..... 
170 =Stenophragma CLARK........ 
171s“ Stenorrhyncus L. C. Ricn ... 
33. Stenosiphon SPACH........... 
123. Stenotaenia Bolss............. 
1384 Stenotheca MoNN............. 
198 venosa MONN. ......... 
62. Stenotus NUTL: wecakacscass 
64 Stephanandra 8S. and Z........ 
62 Steptoramphus BUNGE. ..... 
63 Sterculiaceae BAILL.......... 
63 Sterigmanthe KL. andG.. ... 
62 Stevenia AD. and Fiscu ..... 
63 Stilaginaceae LINDL.......... 
63 Stilpnogyne DGOw.. occ cs geea8 
287 Stilppopappus DC............ 
44000 Spa LINN: ss5 225800 s00% oe oes 
445 9 Stipa canadensis Poin ..... . 
445 ——juncea MICHX....... ... 
449 9 Stipa spurtea TRIN...... 
445 Stipagrostis NEES.  —..... 
d45, Stooria NECK: csc: eccacaneses 
Strateuma SALISB............. 
445 Strebanthus RaF.............. 
350 Streblochaeta Hocusr........ 
350 Streptachne HBK............. 
350 Streptachne R. Br .......... 
350 Streptostachys DESVX........ 
350 =Strobocalyx ScH.-BIP......... 
234 Strophades Roulss............. 
514. Strophiostoma TURCZ......... 
133: Strophis SADISB. 0000005 sncee 
390 Strophopappus DC............ 
413 Strophostyles ELL ............ 
tit ——angulosa ELL........... 
——pauciflorus S. Wars.... 
413 Sturmia REICH. 26 ie. 66.5. ones 
413 —loeselii REICH........... 
413. Stylandra NUTT........... fea 
345. UStylipus RAR 2 eco ctsacdgnes 
