3o8 



INDEX. 



All references are to pages, Italic figures indicate illustrations. 



Taraxacum, pollen grains 205 



Temperature i6o, 233, 247 



Tendrils 67, 80, 106 



Tension, due to growth 157; of 

 tissues 121 



Thallus 19, 21, 23, 27; of liver- 

 worts 42, Jfi, 4S; of Marchantia 



m 



Thiistle, pollen grains of W5 



Thlaspi, leaf of iO^ 



Thorns 67, 80, 100, 106; apple, 



anther of Z03\ of Vella 81 

 Tick trefoil, fruit of 28S 

 Tococa lancifblia 2S9 

 Torus 209, 208 

 Touch-me-not, pods of 278 

 Trametes Pini, hyphae of 36 

 Transfer of food 142 

 Transpiration 133, reducing 237 

 Tropaeolum nO 

 Tubers 79, 244 

 Turgor 120; movements 179 

 Twining plants 176, 250 



Ulothrix 19 

 Ulva lactuca 23 

 Urtica 261 



Utricularia, Grafiana 263\ vul- 

 garis, bladder of 26ii. 

 Uvularia, leidoilOS 



Vallisneria spiralis 274 

 Vanda teres 280 

 Vascular bundles 63 

 Vaucheria 19, 20 

 Vella spinosa 81 

 Venation 104, 105 

 Venus' fly-trap 183, 264 

 Veratrum, pistil of 200 

 Viola, anther of 204 

 Violet, capsule 222 



Water, composition of 248 ; loss of 



I33i 237; movements of 247; 



movement of in plant 129 ; plants 



125; solutions in 125 

 Weight, loss of 148 

 Wheat, seedling 97; stalk 175 

 Willow, iTuit282; lea.ioil05, 189 

 Wintergreen, capsule 221; fruit 



223 

 Wood, secondary 91, 92 



Xanthium fruits 284 

 Xerophytes 237 



Zoospores 119, 18S 

 Zygnema 17 



