INDEX 



Stamens, 417 

 Stangeria, 411 



eriopus, 598 



paradoxa, 598 

 Starch-making, 77 



steps in, 79 

 Stems, elongation of. 118 



exogenous, 65 

 Sterilization, 162 



progressive, 432 

 Stigma, 437 



Stimulus and response, 125 

 Stock, 335 



Stolons, 164, 349, 350 

 Stoma, 33, 35 



Stomata and gaseous exchange, 108 

 Strata, classification of rock, 583 

 Stratification, 582 

 Strawberries, 348 

 Strobilus, 371 



Struggle for existence, 190, 513, 515 

 Style, 437 

 Sugar-beet, 68 

 Sugar-cane, 68 

 Sugar-maple, 336 

 Suminski, Count Lesczyc, 168 

 Sundew, 87, 88, 347 

 Sunlight, importance of, 75 

 Survival of the fittest, 191, 515 

 Suspensor 380 

 Swarm-spores, 251 

 Sweet clover, yellow, 82 

 Sweet pea* 470 

 Symbionts, 318 

 Symbiosis, 214, 321, 324, 325 



social, 325 



Symmetry, bilateral, 167 

 Sympetalae, 456, 473 

 Symplocarpus fcetidus, 496, 499, 



500 



Synangia, 60 1 

 Synergids, 440 



Tap root, 10 



Taraxacum, 486 



Taxonomy, 4 



Tectoria cicutaria, 161, 163 



Tetrad, 158 



Tetrad-divisions, 158, 187 



Tetraphis, 207 



Thallophytes, 366 



Thallus, 167 



Thecium, 330, 331 



Thyme, 479 



Thyrsopteris elegans, 157 



Tillandsia, 326 



Tissue-tension, 117 



Toadflax, 481, 482, 483, 484, 485 



Toadstool, 288 



Tobacco, 480 



Todea barbara, 157 



Tomato, 335, 450, 480 



Torus, 464 



Tour, Cagniard de la, 98 



Toxins, 313 



Trachymyrmex obscurior, 326 



Transpiration, advantages of, 40 



control of, 38 



cuticular, 38 



lifting power of, 42 



stomatal, 38 

 Tree ferns, 150 

 Tree, genealogical, 577 

 Trifolium hybridum, 469 

 Triticum, 298 



vulgare, 494 

 Trollius, 462 



Tropaeolum majus, 137, 143 

 Trunk, 412 



excurrent, 413 



deliquescent, 414 

 Trypsin, 102 

 Tube-cell, 423 



