5H 



INDEX OF PLANT NAMES 



Tristicha, 294 



Triticum sativum, 90 



Tropaeolum, absorption of light, 

 113 ; tendril, 300, 

 301 



majus, gaseous ex- 

 change, 88 ; phyl- 

 lotaxy, 119 ; assimi- 

 lation, 134 ; post- 

 floral movements, 



404, 405 

 Trumpet tree, 310 



Tulip, 171,349, 350 

 Tulipa, 26 

 Tulip tree, 453 

 Turnip, 41, 90, 459 

 Tussilago Farfara, 42 



Ulmus, 13s 

 Urera, 308 

 Urtica, 347 



dioica, 347 



Ustilago violacea, 333, 334 

 Utricularia, 267, 277-282 



affinis, 280 



bifida, 77 



Hookeri, 279 



intermedia, 277 



Jamesoniana, 77, 278, 



280 



minor, 277 



nelumbifolia, 76 



reniformis, 77, 278 



vulgaris, 277 



Vaccinium Vitis-Idaca, 58, 189 

 Valerian, 402 

 Vallisneria, 382 



spiralis, 378, 404 



Vanda furva, 72 



Vanilla planifolia, 302 



Vaucheria, 19, 64 



Venus fly-trap, 267 



Verbascum, 359 



Verbena ciliata, 106, 167-169, 178 



stricta, 29 



Veronica, 448 



agrestis, 25 



cupressoides, 189 



longifolia, 220, 426 



syriaca, 393 



Toumefortii, 426, 428 



Vetch, 258, 300 



, bush, 311 



, kidney, 65 



Vicia Faba, 53, 262 



lathyroides, 448 



sativa, 262 



Victoria regia, 293 

 Vine, host, 234 ; tendril, 301 ; Phyl- 

 loxera, 306 ; age, 461 



, wall, 303 



— ; — , wild, 369 



Viola odorata, 395, 397 



sylvatica, 396 



Violet, nectar, 357, 360 ; honey 

 guide, 364 ; seed dispersal, 



410,413 

 , sweet, cleistogamy, 353, 395, 



396 

 Virginian creeper, 123, 130, 294 

 Viscum, 239 



album, 222-228 



Crassulae, 228 



Vitis, tendril, 301 ; pearl glands, 

 310 ; growth, 444 



vulpina, 32 



Voandzeia subterranea, 404 



Wallflower, 180, 395 



Walnut, leaves, 155 ; fruit, 401 ; 

 germination, 435 



Water-lily, 378, 446 



Water thyme, 462 



Welwitschia, leaves, 188 ; flowers, 

 330 ; pollination, 355 ; sta- 

 men, 341 



Wheat, root, 40, 42 ; seedling, 41 ; 

 wilting, 55 ; solvent action of 

 roots, 69 ; stomatal move- 

 ment, 170 ; transpiration, 

 214 ; rust resistant strains, 

 313 ; pollen, 346 ; pollina- 

 tion, 384 ; autogamy, 397 ; 

 vitality of seed, 418, 419 ; 

 germination, 432 



Whin, leaf, 192, 193, 445, 446 ; host, 

 235 ; bacterial symbiosis, 

 261 ; protection, 307, 309 ; 

 pollen, 348 ; seed dispersal, 

 408-413; reproduction, 458 



, petty, 261 



Whortleberries, 356 



Wiethia amplexicaulis, 31 



Willow, stomata, 108 ; phyllotaxy, 

 118; sex, 330, 331, 339; 

 nectar, 356 ; hair, 400 ; seed 

 dispersal, 415 ; forcing, 456 ; 

 multiplication, 460 ; indi- 

 viduality, 461 



Willow herb, 415, 460 



Wood anemone, 460 



Wood-sorrel, pulvinus, 120 ; orienta- 

 tion, 124 ; acid sap, 313 



Wormwood, 185 



WuUschlaegelia aphylla, 240 



