SCHINUS 
aurantiodora 105 
dependens 106 
Molle 106 
procerus 106 
SCHOENOBIBLUS 
peruvianus 28 
SCORZONERA 
ciliata 120 
SENECIO 
abietinus 43 
SERAPIAS 358 
index to species 358 
SERJANIA sp. 23 
SESUVIUM 
Portulacastrum 96 
SISYMBRIUM 
Sophia 98 
SISYRINCHIUM 
anceps 91 
convolutum 91 
luteum 91 
multiflorum 91 
SKEPTROSTACHYS 358 
index to species 359 
Arechavaletanii 359 
balanophorostachya 359 
Berroana 359 
congestiflora 359 
disoides 359 
giganiea 359 
latipetala 360 
montevidensis 360 
paraguayensis 360 
paranahybae 360 
rupestris 360 
Sancti-Jacobi 360 
SMEGMADERMAS 
emarginata 99 
SMILAX, 90 
snuff, narcotic 216 
SOLANDRA 166 
SOLANUM sp. 40 
apaporanum 37 
crinitipes 37 
crispum 116 
Jamaicense 37 
lepidotum 37 
liximitante 37 
mammosum 38 
nitidum 116 
nutans 116 
ovalifolium 38 
platyphyllum 38 
pubescens 116 
scabridum 38 
stellatum 116 
straminifolium 39 
subinerme 39 
Topiro 39 
variegatum 116 
verbascifolium 39 
SOLIDAGO 
secunda 120 
SOPHORA 160 
SOUROUBEA 
guianensis 
var. corallina 24 
var. cylindrica 25 
pachyphylla_ 25 
SPIRANTHES 360 
index to species 361-371 
SPIRANTHINAE 
key to genera 290-297 
index to genera and species 297 
Spruce, Richard 263 
STACHYTARPHETA sp. 33 
STALKYA 371 
musicola 372 
STENOPTERA 372 
index to species 372 
STENORRHYNCHOS = 372 
index to species 373-376 
STEREOXYLON 
resinosum 99 
STIGMATOSEMA 376 
Hatschbachii 377 
polyaden 377 
STROPHARIA | 167 
STRYCHNOS 
Erichsonii 31 
STYLOGYNE 
amplifolia 30 
SWARTZIA 
longistipitata 18 
recurva 18 
sericea 18 
Sweet flag 235 
populations of 236-241 
uses of 241-244 
