INDEX 
478 
Veratrum, 303 
album, 84 
viride, 303 
Verbasci Flores, 393 
Folia, 393 
Verbascum, 189, 393 
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 
Violacese, 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, defined, 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., 351 
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 
