380 



EMBRYOGENESIS IN PLANTS 



Tilopteris mertensii. Fig. 10 



tissue culture, 4, 16, 31, 100, 155, 162; 



technique of, 83 

 tissue mass, 9 

 Tmesipteris, 13, 22, 29, 85, 86, 88, 104, 



170; Fig. 5; T. tannensis. Fig. 19 

 Tolypella glomerata. Fig. 9 

 Torenia, 261 ; T. foiirnieri, 260; Fig. 66 

 Torreya, 210, 212; T. californica, 210; 



Fig. 51; T. nucifera, 212; Fig. 50; 



T. taxifolia, 210, 212; Figs. 50, 51 

 Tortilla, 80; T. muralis, Fig. 18 

 totipotency, 322 

 transformations, 325 

 Tretjakow, 291 

 Treub, 93, 96, 102, 103, 281 

 Trichocolea, Fig. 16 

 Trichomanes reni forme, 151 

 tricotyledons, 253, 254, 257 

 Trifoliiim, 242; T. minus. Fig. 57; T. 



pratense, 293 

 Triticum, 272, 276, 278, 298; T. durum, 



300, 301; T. monococcum, 298; T. 



turgidum, 300; T. vulgare, 270, 272, 



300; Fig. 73 

 Trochodendraceae, 251 

 Trochodendron, 254, 255 

 Tropaeolum majus, 258 

 Tsi-Tung Li, 188 



Tsuga, 191, 192; T. mertensiana. Fig. 43 

 tuberous embryos, 98, 99, 102, Fig. 24 

 Tukey, 301, 305, 306 

 Tulipa gesneriana, 289 

 tumours, 311, 312, 313, 315 

 Tupeia antarctica, 28 1 ; Fig. 76 

 Turing, 33, 34, 35, 36, 193, 319, 321, 



330, 333 

 twin embryos, 292, 293 



Ulmusamericana, Figs. 51, SO; 290; U. 



glabra, 290 

 ultra-centrifuging, 19 

 Urtica, 242; U. pilulifera. Fig. 58 

 Urticales, 290, 291 

 Ulva, 42 



Vanda, 268 



vascular system, 169, 184 



vascular tissue, 236, 322; differentiation 

 or inception of, 98, 100, 101, 102, 130, 

 132, 137, 138, 141, 146, 156 



von Veh, 305 



Veronica, 242, 282 



Vigna catjang, Fig. 63 



Virtanen, 304 



Viscum, 281 



Vitamins, 302 



vivipary, 286 



Vladesco, 144, 146, 148, 150, 154, 155, 



158, 161, 162, 163 

 Vochting, 14 

 Volvocales, 42 

 Vouk, 144 

 Voyria, 278 

 Voyriella, 278 



Walker, 260 



Walton, 252 



Wand, 116 



Ward, 160 



Wardlaw, 10, 33, 37, 56, 98, 100, 114, 



131, 132, 133, 141, 146, 148, 162, 163, 



164, 194, 198, 319, 325, 333 

 Warming, 272 

 Weatherwax, 276 

 Webber, 289, 293 

 Weij, 15 

 Weiss, 321 

 Welwitschia, 175, 210, 214; ^T. mirahillis, 



219; Fig. 52 

 Welwitschiaceae, 219 

 Weniger, 261 

 Went, 15,21 



Wetmore, 100, 122, 162, 163 

 Wetter, 159, 160 

 Wettstein, 1 1 , 63, 65, 245 

 wheat, 272 

 Whitaker, 6, 16, 17, 18, 19, 21, 49, 50, 



51, 328 

 White, 15, 16, 303 

 Wieland, 185 



Williams, 47, 48, 56, 57, 101, 116, 161 

 Winteraceae, 251, 253 

 Withner, 304 

 Wittwer, 294 



Woodger, 3, 164, 320, 323, 325, 328 

 Woods ia ilvensis, 155 

 Woodworth, 292 

 Worsdell, 270, 272 



X-ray treatment, 297, 298 



Yasuda, 298 

 Yasui, 156 

 Yung, 276 



