408 
Uredospores, 233 
Uromyces, 235, 347 
Uropyxis, 347 
Urtica, 362 
Urticaceae, 362 
Usnea, 216, 224, 340 
Usneaceae, 340 
Ustilaginaceae, 347 
Ustilaginales, 235, 347 
Ustilago, 237, 347 
Vv 
Vaccinium, 365 
Vacuoles, 17 
Valerianaceae, 373 
Valonia, 192, 336 
Valoniaceae, 336 
Valoniales, 336 
Valsa, 343 
Valsaceae, 343 
Valve, 180 
Vanilla, 361 
Vanillin, 154 
Variations, 112 
Vascular Bundles, 55 
Vaucheria, 185, 334 
Vaucheriaceae, 334 
Vaucherioideae, 185, 334 
Vegetable Kingdom, 159 
Veins, 257 
of leaves, 60 
Velloziaceae, 360 
Venter, 243 
Veratrine, 150 
Verbascum, 367 
Verbena, 367 
Verbenaceae, 367 
Vernonia, 376 
Vernoniaceae, 376 
Veronica, 367 
Verpa, 342 
Verrucaria, 342 
Verrucariaceae, 342 
Vetches, 326 
Viburnum, 373 
Vicia, 369 
Victoria, 364 
Vinca, 367 
Viola, 302, 303, 363 
Violaceae, 363 
INDEX 
Violet, 302, 363 
Viscum, 371 
Vitaceae, 371 
Vitex, 367 
Vitis, 371 
Vochysiaceae, 363 
Volvocaceae, 332 
Volvoces, 172 
Volvox, 172, 332 
W 
Walking-fern, 259 
Walnut, 310, 372 
Water, 71, 139 
Cultures, 97 
Ferns, 259, 353 
Flannel, 185 
-lilies, 364 
Molds, 186, 335 
Net, 172 
Plantain, 289, 357 
pores, 77 
Weberaceae, 351 
Wedge-leaved Calamites, 262, 353 
Weisia, 350 
Welwitschia, 275, 355 
Wheat Grasses, 359 
rust, 232 
Smut, 237 
White Pines, 282 
Rusts, 187, 335 
Whorled leaves, 292 
Wild Geranium, 302, 326 
Willows, 364 
Wings, 308 
Winteranaceae, 362 
Wood-fibers, 33 
Wood Mosses, 252, 350 
Xx 
Xanthium, 375 
Xanthophyll, 11, 155 
Xanthoxylum, 363 
Xerophytes, 320 
Xylaria, 343 
Xylariaceae, 343 
Xylem, 55 
Xyridaceae, 358 
