600 
Waldsteinia 
parviflora 
Washingtonia 
(Osmorrhiza) 
Claytoni 
divaricata 
longistylis 
obtusa 
Weigela 
Willughbaea 
(Mikania) 
scandens 
Windsoria 
stricta 
pallida 
Wisteria 
frutescens 
macrostachys 
Speciosa 
see Kraunhia 
Withania 
sordida 
Wolffia 
brasiliana 
columbiana 
floridana 
gladiata 
papulifera 
punctata 
Wolffiella 
floridana 
gladiata 
oblonga 
Woodsia 
alpina 
Cathcartiana 
glabella 
hyperborea 
ilvensis 
obtusa 
oregana 
scopulina 
GENERAL INDEX OF LATIN GENERA AND SPECIES. 
2 269 
2 627 
627 
628 
628 
628 
3 283 
3 362 
363 
Woodwardia 
angustifolia I 25 
areolata 25 
virginica 24 
Wulfenia 
Houghtoniana 3 198 
rubra 199 
Xanthium 3 343 
americanum 346 
canadense 346 
commune 346 
echinatum 345 
fruticosum 342 
glabratum 346 
glanduliferum 345 
inflexum 345 
Macounii 345 
macrocarpum 
“ glabratum 346 
maculatum 345 
orientale 346 
oviforme 345 
pennsylvanicum 346 
speciosum 344 
spinosum 344 
strumarium 343, 6 
Xanthorrhiza 2 89 
apiifolia 89 
simplicissima 89 
Xanthoxalis 2 432-5 
Brittoniae 434 
Bushii 433 
corniculata 431-2 
cymosa 435 
filipes 433 
grandis 435 
interior 434 
Priceae 434 
recurva 434 
rufa 433 
stricta 432 
Xanthoxrylum 2 443 
Xerophyllum I ie 
asphodeloides 488 
setifolium 488 
Ximenesia 3 488 
encelioides 489 
Xolisma 2 691 
(Andromeda in 
part 
foliosiflora 691 
ligustrina 691 
Xylosteum 3 282 
involucratum 282 
oblongifolium 281 
XYRIDACEAE I 450 
Xyris I 450 
arenicola 453 
caroliniana 451 
communis 452 
Congdoni 452 
difformis 452 
elata 452 
fimbriata 453 
flexuosa 451 
Jupacai 451 
macrocephala 452 
montana 451 
pusilla 451 
torta 451-2 
Yucca I 512 
aloifolia 512 
arkansana 512 
angustifolia 512 
baccata ee: 
filamentosa 513 
glauca 512 
ZANICHELLIACEAE I 74 
Zanichellia I 88 
intermedia 89 
palustris 89 
Vor. III. 
Zanthoxylum 2 443 
americanum 444 
carolinianum 444 
Clava-Herculis 444 
Zapania 
cuneifolia 3 98 
Zephyranthes 
Atamasco I 532 
Zinnia 3 466 
grandiflora 466 
Zizania I 168 
aquatica 168 
miliacea 167 
palustris 168 
Zizaniopsis I 167 
miliacea 167 
Zizia 2 641 
aurea 641 
Bebbii 641 
cordata 642 
integerrima 640 
pinnatifida 640 
Zornia 2 394 
bracteata 394 
tetraphylla 394 
ZOSTERACEAE I 90 
Zostera QI 
marina ob 
ZOYSIEAE 107-8 
Zygadenus I 490 
elegans 491 
chloranthus 491 
glaberrimus 491 
glaucus 491 
gramineus 492 
helmanthoides 493 
intermedius 491 
Nuttallit 492 
venenosus 492 
ZYGOPHYLLACEAE 2 442 
Zygophyllidium 2 468 
hexagonum 468 
