478 



INDEX 



Veratrum, 303 



album, 84 



viride, 303 

 Verbasci Flores, 393 



Folia, 393 

 Verbascum, 189, 393 c. ~ 



Blattaria, 392, 393 



phlomoides, 393 



Thapsiforme, 393 



Thapsus, 392, 393 

 Verbena N. F., 395 



hastata, 395 

 Verbenaceae, 395 

 Vernation, 157, 158 

 Veronica, 189, 392. 393 



virginica, 393 

 Verticillaster, 180 

 Viburnum, 399 



Lentago, 400 



Opulus, 400 



Prunifolium, 400 

 Vinca, style of, 198 

 Vinum Xericum, 361 

 Viola tricolor, 368 



style of, 198 

 Violaceae, 368 

 Viscum, 59 

 Vitaceae, 359 

 Vitis, 361 

 Volatile oils, 92 

 Volvocales, 232 

 Volvox globator, life history of, 232- 



234 

 Vouacapoua Araroba, 344 



Walnut Family, 315 

 Waltheria, 361 

 Water Ferns, 292 

 Water Leaf Family, 388 

 Watermelon, 400 



seed, 401 



Water stomata, 106 

 Weigelia, 399, 400 

 Welwitchia, 58 



Weymouth Pine, 45 

 Wheat, Fig. of plant, 297 



rust, 269 

 Wheat, Fig. of fruit, 208 



starch, 78, 79 



White Pine, life history of, 45-52 

 Wild Black Cherry, 6, 96 



Cherry, 4 

 Willow, 311, 312 

 Winter's Bark, 324 

 Witchhazel Family, 337 

 Wood, denned, 150 



fibers, 105 



heart-, 152 



microscopic characters of angio- 

 spermous and gymnosper- 

 mous, 152 



parenchyma, 101 



pine, 151 



sap-, 152 

 Wood Rush, parenchyma of, 101 



Xanthophyll, 93 



Xanthoxyli Fructus N. F., 35 r 



Xanthoxylum, 350, 351 



americanum, 351 



Clava-Herculis, 351 

 Xerophytes, 410 

 Xylem, 119 



stages in development of elements 

 of, 114 



Yam Family, 393 

 Yeasts, bottom, 255 



defined, 251 



Hansen's classification of, 251, 252 



top, 255 

 Yucca, 301 



Zanthoxyleae, 349 

 Zea N. F., 299 

 Mays, 299 



bundle of stem of, 115 



inflorescences of, 298 





