574 



INDEX TO THE ILLUSTRATIONS. 



Taraxacum Dbns-leonis, 513 

 Tax us baccata, 395 

 Tetragonolobus, 531 

 Theobroma Cacao, 545 

 Thistle, 98 

 Tilletia caries, 321 

 Tradeacantia Virginica, 12 

 Trapa natans, 163 

 Trictiomanes, 377 

 Tsaga C'anadeDsis, 152 

 Tuber melanosporam, 285 



TJlva, 224 



Uncinula adunca, 281 



Urtica macrophylla, 61 



TJrtica urens, 491 



Usnea barbata, 302, 304, 308 



Ustilago antlierarum, 330 



Ustilago Maydis, 320 



VACCINIDM MYBTIIjLtrS, 511 



Vanilla planifolia, 471 



Vaucberia sessilis, 47, 251, 252, 



253 

 Vibrio Eugula, 213 

 Vlcia faba, 38, 69, 474 

 Viola tricolor, 30, 422, 423 

 Virginia Creeper, 154 

 Vitis, 79, 80 

 Vitis vinifera, 538 

 Volvox globator, 244 



Wallflower, 552 

 Welwitschia mirabilis, 60, 414 



Ybast Plant, 39, 214 



Zea Mais, 113, 154, 160, 451. 453 



