INDEX 



463 



spring wood, 178 



sprouting, 326 



spruce, 431 



spur, 310, 311 



spurge family, 194 



squash, 333 



squirrel corn, 260 



squirrels, 329 



Slichys, 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 el seq., 



419 

 stems, 49 et seq., 143 el seq. 

 stereome, 176 

 sticktight, 63, 327, 330 

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



308 

 stimulus, 133, iQi, 448 

 Slipa sparlea, 334, 33s 

 stipe, 380 

 stipule, 207, 208 

 stock (in grafting), 181, 182 

 stomate, 54, 8s, 23s 

 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, 61, 273 

 suberin, 170 

 suckers, 188 

 sugar, 52, 230 

 sugar cane, 52 

 sulphur, 95, 103, 349 

 sumach, 246 

 summer spore, 387, 389 

 sundew, 2S4> 2SS 

 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, 1 25, 126, 138, 353 



taro, 13 



tassel of corn, 282 



tendril, 128, 132, 133, iS4 



terminal buds, 186 



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



thallophytes, 361, 362 el seq., 439 



thallose liverworts, 403 



thallus, 361, 396 



thoroughbred, 446 



thorns, 155 



tissue, 77 



toadstool, 379 el seq., 391 



tobacco, 321 



tomato, 62 



touch-me-not, 321, 331 



tracheary vessels, 173 



transpiration, 108, 219 el seq, 



transpiration stream, 175 



tree ferns, 415 



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



triUium, 156, 157 



triple fusion, 445 



tropism, 132 



true ferns, 415 el seq. 



true fungi, jyS el seq. 



trumpet creeper, 128 



tube cell, 437 



tuber, 48, iss, 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 



Ulolhrix, 366, 367 



umbel, 300, 301 



Umbelliferoe, 300 



underground stems, 48, ks el seq., 418, 



420, 423 

 unicellular forms, 363 

 unisexual flowers, 281 



