798 



BOTANY 



Truffles, Tuberaceae 



Trypanosoma, *381 



Tuberaceae, 447 



Tubers, 178, 194, 308, 447 *448 



Tubiflorae, 690 



Tulipa, 725 ; bulb, *178 



Turgescence, *225 



Turnip, Brassica napus 



Tussilago, *716, 718 



Twining plants, 182, 343, *344 



Typhaceae, 737 



Tyrosin, 258 



Ulex, 672 



Ulmaceae, 616 



Ulmus, 616, *617 ; development of the 



leaf, *108 ; ovule of, *573 

 Ulothrix, *199, 402, *404 

 Ulotrichales, 401 

 Ulva, *75, 402 

 Umbel, *127 

 Umbelliferae, 679 

 Umbelliflorae, 677 

 Uncinula, 440, *441 

 Unfolding buds, distribution of, 124 

 Unicellular bacteria, Hapldbacteria 

 Uragoga, 705, *708 

 Uredineae, 455 

 Uredospores, 457 

 Urginea, *723, 725, 726 

 Urtica, 619 ; hybrid, *321 

 Urticaceae, 619 

 Urticinae, 616 

 Usnea, 471, *472 

 Ustilaginaceae, 453 

 Ustilagineae, 452 

 Ustilago, *453, 454, *455 ; brand-spores, 



453 

 Utricularia, *186, 704 



Vaccinium, 685, *685 



Vacuoles, 12 



Valerian, Valeriana 



Valeriana, 706, *708 



Valerianaceae, 706 



Vallisneria, 721 



Vanda, 749 



Vanilla, *747, 748 



Variability, 316, 322 



Variation curves, *324 



Vascular bundles, arrangement, 95 ; bi- 

 collateral, 100 ; cauline, 96; collateral 

 100 ; common, 96 ; complete, 67 ; con- 

 centric, 99, *100, *101 ; course of, 

 96 ; foliar, 96 ; incomplete, 67 ; 

 radial, 99 ; structure of, 99 ; system, 

 67 ; system of tissue of, 67 ; termina- 

 tion of, *111 



Vascular cryptogams, 496, 499 



Vascular plants, 366 



Vascular system, phylogeny of, 105 



Vaucheria, *407, *408 



Vegetable kingdom, phylogeny of, 365 



Vegetative cone, *85, *86, *87 



Vegetative form, periodic changes in, 307 



Veins, 110 



Velamen, 184 



Velum, 465 



Venation, 110 



Ventral canal-cell, 567 



Ventral suture, 547 



Veratrum, 725, 726 



Verbascum, *701, 703 



Verbena, *694 



Verbenaceae, 694 



Vernation, 87 



Veronica, 703 



Verrucaria, 471 



Vessels, 64, 148 ; pitted, 65 ; scalariform. 



65 



Vetch, Vicia 

 Vibrio, 370, *371, 374 

 Viburnum, 705, 706 

 Vicia, *668, 672, 673 

 Victoria, 632 

 Vinca, 689, *690 

 Vincetoxicum, 690, *693 

 Viola, *646 ; capsule, *583 ; flower of, 



*552 



Violaceae, 647 



Viscaria, *630 ; diagram of, *551 

 Viscum, 192, 259, 620, *620 

 Vitaceae, 658 

 Vitis, *658 



Viviparous plants, 589 

 Volva, 465 

 Volvocales, 398 

 Volvox, 399, *400 



Wall, growth in thickness, 36 

 Wallflower, Gheiranthus Cheiri 

 Walnut, Juglans regia 

 Water, 222 ; absorption of, 223, 227 ; 



assimilation of, 262 ; conduction of, 



235 ; movement of, 228 

 Water cultures, 238, *239 

 Water- Ferns, Hydropterideae 

 Water-Hemlock, Gicuta 

 Water-net, Hydrodictyon 

 Water Nut, Trapa 

 Water-Parsnip, Slum 

 Water plants, 165, 228 

 Water-pores, *114 

 Water-stomata, 113, 233 

 Water-storage tissue, 113 

 Wax incrustation, *50 

 Weigelia, 706 



Welwitschia, 108, *602 ; prothallia, 569 

 Wheat, Triticum 

 White Mustard, Sinapis alba 

 White Water Lily, Nympliaea alba 

 Whorl, 88 



