INDEX 



463 



spring wood, 178 



sprouting, 326 



spruce, 431 



spur, 310, 311 



spurge family, 194 



squash, 353 



squirrel corn, 260 



squirrels, 329 



Stachys, 61, 288 



stamen, 60, 272, 424 



staminate cone, 432, 434 



staminate flowers, 264, 281 



starch, 230, 346 



starch grains, 232, 346 



starchy seeds, 347, 352 



states of matter, 91 



stele, 79, 80, 81, 128, 137, 163 et seq., 



419 



stems, 49 et seq., 143 et seq. 

 stereome, 176 

 sticktight, 63, 327, 330 



stigma, 61, 273, 303, 305, 306, 307, 

 308 



stimulus, 133, 191, 448 



Stipa spartea, 334, 335 



stipe, 380 



stipule, 207, 208 



stock (in grafting), 181, 182 



stomate, 54, 85, 235 



stone fruit, 331, 332 



stools, 161 



storage, 191 



stork's bill, 334 



strain, 447 



strawberry, 127, 150, 332 



strobilus, 422, 424, 426, 432, 441 



stubble, 388 



style, 6 1, 273 



suberin, 170 



suckers, 188 



sugar, 52, 230 



sugar cane, 52 



sulphur, 95, 103, 349 



sumach, 246 



summer spore, 387, 389 



sundew, 254, 255 



sunflower, 47, 170, 346 



superior ovary, 292 



sweet pea, 251, 287, 288, 290 



sweet potato, 49 



sycamore, 301 



sympetalous, 286 



syncarpous, 290 

 syringa, 59, 60, 301, 303 



tape grass, 304 

 tap-root, 125, 126, 138, 353 

 aro, 13 



tassel of corn, 282 

 tendril, 128, 132, 153, 154 

 terminal buds, 186 

 testa, 327, 339, 347, 352, 353, 438 

 thallophytes, 361, 362 et seq., 439 

 thallose liverworts, 403 

 thallus, 361, 396 

 thoroughbred, 446 

 thorns, 155 

 tissue, 77 



toadstool, 379 et seq., 391 

 tobacco, 321 

 tomato, 62 



touch-me-not, 321, 331 

 tracheary vessels, 173 

 transpiration, 108, 219 et seq. 

 transpiration stream, 175 

 tree ferns, 415 



trees, 146, 148, 165 et seq., 179 

 trillium, 156, 157 

 triple fusion, 445 

 tropism, 132 

 true ferns, 415 el seq. 

 true fungi, 378 et seq. 

 trumpet creeper, 128 

 tube cell, 437 

 tuber, 48, 155, 158 

 tubercles, 334, 377 

 tuberculosis, 376 

 tulip, 57, 159, 213, 234 

 tulip tree, 333 

 tumbleweed, 327 

 turgidity, 75, 76, 225, 236 

 turnip, 125 

 typhoid fever, 376 



U 



Ulothrix, 366, 367 



umbel, 300, 301 



Umbellifertz, 300 



underground stems, 48, 155 et seq., 418, 



420, 423 



unicellular forms, 363 

 unisexual flowers, 281 



