410 



INDEX 



sporogonium, 237, 240 

 spring wood, 335, 336 

 stamens, 345, 34 6 > 35 2 , 353. 3 6 4 

 starch, 40, 43, 45, 77, 90, 118-120, 



122, 178, 186, 209, 376, 377, 



381, 396 

 starch grains, 40, 46, 117, 118, 



126, 234, 301, 319, 375, 380 

 sterilisation, 146, 147 

 stigma, 348, 35 L 355> 35 6 > 357. 



364, 385 

 stimulus, 26, 86 

 stipe, 215, 216, 219 

 stolons, 261 

 stoma, 115, 242, 303, 305-308, 



317. 339 

 stone cells, 280 

 storage tissue (of Fucus), 222 

 struggle for existence, 401 

 style, 346, 348, 35 L 364. 37 

 subaerial shoot, see aerial 

 suberin, 284, 299, 339 

 subordinate rays, 335, 336 

 sucrose, 38, 39, 45 

 sugars, 38, 39, 45, 56, 57, 77, 81- 



83, 114, 117-122, 149, 159, 305, 



310, 380, 395, 396 

 supporting tissue, 279, 320 

 surface energy, 52 

 surface tension, 52, 69, 70 

 suspensoid, 49, 59 

 suspensor, 361-364 

 synergidae, 349, 350 



taproot, 256, 257, 267, 288 

 taxis, 87 



teleutospores, 179-181 

 terminal bud, 256, 258, 261, 262, 



265, 316, 320, 321, 328 

 testa, 364, 369, 37*, 378-380 

 thallus, 214, 233 

 tissue mother cell, 331-334 

 tissues, 80, 94, 95, 98, 106, 107, 



217, 238, 241, 242, 270 

 tracheids, 280-283 

 tracheids, annular, 281, 295 

 tracheids, pitted, 282 

 tracheids, reticulate, 282 

 tracheids, scalariform, 282 

 tracheids, spiral, 280-282, 295 

 transpiration, 304, 310 

 tropisms, 87, 288, 315 

 tubers, 119, 262, 265, 266, 325 

 turgor (turgidity), 108, 109, no, 



305, 307 



ultra-microscope, 50 

 ultra-microscopic particles, 50, 51, 



61 

 unicellular organism, 66, 93, 96, 



184, 185 

 urea, 65, 83 

 uredospores, 178-181 

 uric acid, 83 



vacuole, 62, 100, 101, 107-109, 



in, 115, 117, 125, 128, 158, 



207, 217, 218, 270, 273, 274, 

 275, 296 



vacuole wall, 101, 102 



vascular bundles, 302, 310, 317, 

 318,321,324, 325 



vascular cylinder, 291, 293, 294, 



295, 297, 317, 318, 319, 322, 



324, 325 



Vascular Plants, 241-243 

 vascular system, 242, 246 

 vascular tissue, 317 

 vegetative reproduction, 206, 241, 



248, 266, 267 

 veins, 302, 310-312, 325 

 vessels, 282, 283, 293, 296, 297, 



324, 325, 332, 335 

 vestibule, 306, 308 

 " vital functions," 76, 92, 97, 



390 

 Volvox, 197-200 



water cultures, 123 



water, essential importance of, 37 



water tissue, 275, 276, 310 



wilting, 109, 308, 320 



wind pollination, 358 



wine-making, 134 



wings, 215, 216, 218 



winter buds, 329, 330 



woody plants, 255, 328 



wort, 132-134, 381 



xanthophyll, 112, 214 



xylem, 293, 295, 298, 302, 304, 



310, 311, 317, 318, 331-334 

 xylem (wood) fibre, 332-335 



yeast plant, 128-136, 142, 143, 

 150 



zooglcea, 141 



zoospores, 172, 173, 175, 176, 203 

 zygote, 162-164, 175, 189, 208- 

 210, 225, -236, 244, 352, 361 



