INDEX 



231 



Tropseolum majus, Fig. 90, p. 153 



True roots, 72 



Truncate apex of leaves, 159 



Fig. 95, p. 160 

 base of leaves, 156 



Fig. 92, p. 155 



Tsuga canadensis, Fig. 131, p. 203 

 Tube cell, 101, 116 

 Tubers, 134, 139 

 Tulip tree, Fig. 95, p. 160 

 Tunicated bulbs, 137, 138 

 Twining atoms, Fig. 80, p. 140 

 Twin-leaf, Fig. 75, p. 134 

 Typhoid fever, bacilli of, 40 



ULMTJS americana, Fig. 122, p. 193 

 fulva, Figs. 92, 93, pp. 155, 157 



Ulothirx, 30 



Umbel, 175 



Fig. 108, p. 175 



Unicorn, false, Fig. 76, p. 135 

 true, Fig. 76, p. 135 



Unifolium canadense, Fig. 98, p. 163 



Unilocular dehiscent fruits, 203 



Urceolate corolla, 180 



Ustilago zeae, Fig. 21, p. 54 



Utricle, 193, 194 



Uvularia perfoliata, Fig. 91, p. 154 



VACCINIUM sp., Fig. 109, p. 179 

 Vagnera racemosa, Fig. 75, p. 134 

 Valvate capsule, 20 

 Fig. 132, p. 205 

 Valves, 182 

 Van Mohl, 18 

 Vaucheria, 30 

 Venation of leaves, 164 



Fig. 98, p. 163 

 Venter, 63, 101 

 Ventral canal cell, 101 



surface of leaves, 152 

 Venus flytrap, Fig. 103, p. 168 

 Veratrum viride, Fig. 76, p. 135 

 Verbascum sp., Fig. 114, p. 183 



thapsus, Fig. 91, p. 154 

 Verbena hastata, Fig. 106, p. 173 



Veronica officinalis, Fig. 79, p. 138 



virginica. Fig. 76, p. 135 

 Vertical" rhizomes, 137 



roots, 130 



Vervain, blue, Fig. 106, p. 173 

 Vetch, Fig. 130, p. 202 

 Vesicles, 31 

 Viburnum acerifolium, Figs. 79, 



99, pp. 138, 164 



Vicia americana, Fig. 130, p. 202 

 Viola pedata, Fig. 94, p. 158 



sp., Figs. 109, 132, pp. 179, 205 

 Violet, Figs. 109, 132, pp. 179, 205 

 Virginia creeper, Figs. 72, 78, 81, 



pp. 127, 137, 141 

 Virgin's bower, Fig. 81, p. 141 

 Vitis aBstivalis, Figs. 78, 81, pp. 



137, 141 

 Volvox, 30 



W 



WALKING fern, Fig. 45, p. 83 

 Water hemlock. See Hemlock 



hyacinth. See Hyacinth. 



lily, white, Fig. Ill, p. 181 



roots, Fig. 72, p. 127 

 Water-carried seeds, 211 



Fig. 134, p. 212 

 Wheat, stalk of, Fig. 122, p. 193 

 White pine. See Pine, white. 

 Whorled branches, 133 



leaves, 167 



Fig. 99, p. 164 

 Wild ginger. See Ginger, wild. 



yellow Hly . See Yellow lily, wild . 

 Willow, Figs. 87, 89, 106, 119, pp. 



150, 152, 173, 188 

 Wind-carried seeds, 211 



Fig. 134, p. 212 

 Winged surface of stems, 144 

 Wintergreen, Figs. 95, 96, 101, pp. 



160, 161, 166 

 Witch-hazel, Figs. 93, 98, 100, 134, 



pp. 157, 163, 165, 212 

 Wood sorrel, Fig. 95, p. 160 

 Woody roots, 131 

 Fig. 71, p. 126 



stems, 140 



Fig. 82, p. 142 



Wrinkled surface of roots, 13 1 

 Fig. 73, p. 128 



