XII 
INDEX. 
Page 
Pas 
Pyrus japonica .... 
. 331 
TILIA, generic characters of . 38 
" malus ..... 
. 296 
Tilia americana 
47 
' m. acerba 
. 297 
" a. alba . 
. 48 
m. coronaria .... 
. 297 
" europaa 
" glabra . 
. 39 
. 47 
Quince, Common 
. 333 
" heterophylla . 
Toothache-tree 
. 49 
. 150 
RHAMNUS, generic characters of_ 
. 174 
Tree of Friendship 
. 507 
Rhamnus catharticus . . . . 
. 175 
" Heaven 
. 156 
RHODODENDRON, generic characters 
Of . 358 
" Liberty 
. 506 
Rhododendron maximum . . . . 
. 359 
Tulip-tree, Liriodendron 
. 24 
" ponticum . . . . 
. 358 
Tupelo-tree . 
. 423 
ROBINIA, generic characters of . 
. 194 
" Large . 
. 426 
Robinia glutinosa . . . . . 
. 209 
" Sour .... 
. 426 
" montana . 
. 209 
" pseudacacia . . . . 
. 195 
ULMUS, generic characters of 
. 477 
" pseudo-acacia . 
. 195 
Ulmus americana .... 
499 
" viscosa 
. 209 
" a. alata .... 
. 502 
RHUS, generic characters of 
. 181 
" a. fulva .... 
. 501 
Rhus coriacea ...... 
. 182 
" a. opaca .... 
. 503 
" cotinus . . . . 
. 182 
" a. racemosa .... 
. 500 
" typhina . . . . . 
. 184 
" campestris .... 
. 479 
" venenata 
. 186 
" c. montana . . 
. 485 
" vcrnix . . 
. 186 
" c. m. glabra .... 
" rubra ..... 
. 486 
. 501 
Sassafras-tree 
. 416 
Umbrella-tree .... 
. 10 
Service-tree, Wild .... 
. 325 
Uvaria triloba ..... 
. 31 
SHEPHERDIA, generic characters of . 
. 428 
Shepherdia argentea .... 
. 429 
Virgilia lutea ..... 
. 192 
Snow-drop-tree 
366, 371 
VITIS, generic characters of 
. 131 
Snow-flower-tree, Virginian . 
. 371 
Vitis labrusca .... 
. 133 
Sorbus aucuparia ..... 
. 325 
" /. Isabella .... 
. 134 
Sorrel-tree, Lyonia .... 
. 356 
" vinifera ..... 
. 131 
Sour Gum 
. 423 
" Tupelo 
. 426 
Wahoo 
17, 502 
Stillingia sebifera ..... 
. 431 
White- wood ... 
. 24 
Styrax officinale ..... 
. 365 
Wickoby ... 
422 
Sumach, Poisonous .... 
. 186 
Witch Hazel 
. -49 
" Staghorn, Virginian 
. 184 
" Venice 
. 182 
XANTHOXYLUM, generic characters of .149 
SWIETENIA, generic characters of 
. 126 
Xanthoxylum fraxineum . . . . .150 
Swietenia mahogoni . 
. 127 
Sycamore, Maple 
. 88 
Yellow Gum, Tupelo 423 
Yellow-wood, Virgilia 192 
Tallow-tree 
. 431 
" Great Prickly . . . .150 
Tamarix gallica ..... 
342, 403 
Thorn, Cock-spur 
. 278 
ZanthozQiam americanum .... 150 
" Dotted-fruited .... 
. 277 
" clava herculia .... 150 
" Washington .... 
. 280 I 
ZerKOua, Zelkona . 
. 
. 
. 514 
