499 INDEX. 
Page. : Page. 
Setaria glauca ..........0..655. Seu ecaenen'sas 351 | Spondias dulcis.............0--22 eee e eee eee 76 
var. geniculata..........- oecceaeccees 351 lutea. .....cceeeeeee eedessecceuuessevaes 76 
Var. EMDETDIS. cc cae e een eeeneeneeeee «ool NIGVESCONS. . 22... ee eee cee wees eeu eneees 75 
var. peniciliata..... Kase ce usdes'ed snc 3al DUP PUNCO seo e ec cn ees vececeseeseess sess es 76 
Var. PUFPUFASCCNS...2...0.2ee eee e eee 351 | Sporobolus ............0ee8 sdeaeeetereeeeeus 367 
hispida... ....cceeeee eeawieecceneueccceee 351 OMNIS. o.ca uc coscc sass add sbeane tse seins’ 368 
Htalicd. 2... eee eee eee eee eee eens 352 ANgGUSIUS........ Saeeuseeeesesesseeegeuee 370 
MaCrOStAChyA....- 2... e cece eee eee ewww eens 349 ATEZULUS.. 0c cece eee cree ee eeneteeeeeeeees 368 
re 352 Atrovirens........scceeeeeeeeee Sc csineee ce 869 
OCT OCG sag binaa cd ecwessnese sees sseeecnswa's 402 DOMAMENSIS. 2... cece cece ee eeecaennceneer 369 
ONUTUS. 222... eeeeeee See uceseesawseseuees 349 berteroanuS..........-.-.-.----- See ces ae 370 
PUT PUTASCENS . 2.20... ce cece cence ceeeecees 351 brasiliensis. ........cccccccscsceccecsecee 368 
SCANMENE 00... cccccsencccccncccncsesccces 352 CUDCNSIS ioe. see cce wa ss cc cccuceweeses 870 
SetOSA VAL. COUMQIG... cece cence eee eneeee 349 domingensis............-...2..0- eee ee eee 369 
LENACISSEMA. 2.2... s econ eee e eee e eee sence 352 AN CICUS. 0. seccescciectveedswervessvee= 369, 370 
DENIENELIL. . eee eeeweeeeeeecceccceccees 351 jacquemontii..:..... egusceueeceecsscuee 369, 370 
verticillala........ Scenveesscuseressesceee 352 lamarchii. i... ccc cece c cence eee eeeees 369, 370 
WIUTIGIG coc ccae Se caceccccessceeasdssee.0s 352 Jittoralis...2..ccticce deve sccaccssnca cess 369 
DULG oo ooo ew ees oneness tee ce ces 350 MUTANS. 6 5 oc cccccee'c sescewa ster essoeeses 368 
Seymour frass............2.20---- eee eee ee eee 282 PUFPULASCONS, ....cceseeeseerecescescness 870 
Sharp-petaled Annonas...........--------+6+ 14 Virginicus............ceee se ee ee eeeenenes 369 
Sidcroxylum..........2e0e cece eee cece eeeeees 76 | Stachyarrhena..............-.--- Le doeasededs 87 
SAPOld......05 iecncees eesseeesceusee sacs 77,81 heterochroa.....--...-e- eee eee eee eee 133, 142 
Siguapa........... sceteses eeaceedeseseseeese 86 penduliflora. ........cceseeeeeneeeeeeeues 142 
Silky AMMONAS.........-0cecee wesc cence neces 9 | Stegosia exaliata..... 0.2.0... e ee ee ewes enenes 275 
BONCONS. caccacene occeeveecexecneswancacasewe 31 | Stemophyllus..............2.. ccc cece eee e eee 87 
BONCOS A... 2... e eee eee eee nec e ene eeeee 31 PATACOXUS. ...ceeececececeecceceseceeree 88 
Borghastrum......-ccecccccccsceccvecccccsre 286 | Stenotaphrum..........cccseeececenecceeesae 356 
AQTOSLOIDES . owe eae ence eee ence ees eeeee 287 GMETICANWM . 02. c eee c enn cc cece necccceenns 356 
FrancavillanuM......cccceeceseeceeeeeeees 287 dimidiatum var. americanum........-.... 357 
parviflorum........-........0-.-2.02-- 287, 402 glabrum var. americanum......--.---.---- 357 
selosum....... gueu dessus seetheutcoeseeeae 287 SAT MENLOSW . wa ancccncccnsercnsscccerres 356 
SLIPOIUOS. ..... 0. cece eee eee e eee seeeenenee 287 secundatum..............665 eeesseee ess 856 
BOPNO sob ose cs conc ccccesseccdesacpseccuneess 286 | Stipa arquens........- 0. eee cece ee eee eee nee 288 
Sorghum bicorne. .......ccccccecsecceencceees 283 CODLUONG aac ce oe oe cete eos saces esse cs 367 
Od | 279 | Stolonifera.......- ccc eee e eee eee eee cece ewes 324 
CUbINI CUE. 6 6e si cess cicde ise cece covcseesae 402 | Strephiwm pulchellum. ..cceeeseeecececsnecee 360 
CUDETISE . occccc canactsdesesevescesescenese 280 | Streptachne cubensis... .....20-2ee cece eee eeee 367 
OTD ve vc ceca ceucacasssacccesuectesesun se 2R6i COMINGENSIS. 02 eee cece ewe e ee ee ee eeees 281 
a 79 floridand.... 2.2. cecccncccecnencccccennee 367 
OPAC. wa ccaaccascncccccncnccccssascesaes 280 SCODEG cic ce ciecesscesavessssseessenccseee 367 
hale pensie.......2.-0- eee cece eee eee ences 286 | Streptochaecta........--....eeeeee eee ee eenees 364 
Teucoslachyum.....-.-.++ weweeeeeatseavess 283 ::) 6) (6:2): 364 
MATVIPOTUM. 2 occ accecccececeaccecuccecces 287 | Streptogyne.......... 2 eee ee eee eee eee eee 393 
PAUCIPOTUM. cccccccccacccccaccccnceaceees 288 OPIN Ase oe oe ccna wine cesce cece enaneoees 393 
BACCHATOIdCS 0... cee ew ewww eee e eee wee e eens 282 | Styrax............- euvevssuseeenseuseeeecess 121 
WUIQOIE oc coc bdacsccescss caccgucessceas 286 BIPONUCUS, cies. csv hve wacccaesceccueeess 122 
zizaniodes... 2.2.2.2 -02 2c eee e cece e eee e eee 285 bogotensis............... seeeeescewereess 122 
BOUr-2TaSS. 0.2 cece eee ee cece eee eee eeeeee 282, 292,318 panamensis.......--....----2 ee eee ee eee 121 
SOUTSOP....- cece cece cece cece eweneeeceeees 26, 28 WATSCOWICZIi.. 2... ee eee eee eee eee eee 122 
MIOUNUCAIN coe sc6.c oe scecec as cucuecu.ceseeee 24 | Sudan grass... 2.2.22... eee eee e ee cece eee ees 286 
01 6 weees 8, 24,25,26,28 | Sugar apple. ......... ces eee cece eee eee eee eees 59 
BOUPSOPS cc ic actsteeccwctetecbassescieacccss 6,9 CANC....- 22. ee eee oi cceeeuweceesseaceeees 273 
Spartina ...-..... 20.2... 0 ee eee eee eee eee 873 | Sulcatae (serics)..........02..eee ee eee 205,210, 223 
eynosuroides...........2- 2020 ee eee e eee S73. | SUCDANS soc ic fic ccciccesvccescsecscsenceass 328 
TUNCED 5c noe Soca secon esc n ie eeascees ver 373 | Sweet vernal grass..........2.....-20-- 2 eee 364 
patens juncea........ eee eee eee eee eee 873 | Sweetia panamensis....................-2005 234 
Spermacoce hispida..........2-....-----220 122 | Syllepis polystachya.........2.-2----2-2-2- 0 ee 321 
BOOUIS Se sac ce cc sesccecssssceessessseceexs 122 | Symplocos chiriquensis.........-.....-....-. 168 
WOU fOMIG Sc coc eee sesso seccucesevessees ies 122 martinicensls. . <2... ..0csecse.. ccs esse 169 
BPINOIG Ss oo os ices sec a'ss ds seeccees sus «- 122 | Syntherisma......-.--.....-. eee ee ween ee eee 292 
tenella......22002- oceseesse Joe es shueeeeces 122 argillacea..........eeceseeeecceeceeeeeeee 296 
Bphenopholis.....2...caceccescsocssncctscanss 372 ATZYTOStACHYA. 2... cece eee e eee ween cere 294 
obtusata .........0ccceceeueeeeeeseeeeeee 372 | Curvinervis........0.cccceceeeeeeeeeeeees 295 
Spiciformes (subsection)............... 252, 253, 254 Gigitata. i.c6icecivcscictvicsieseeeesccnces 293 
