Stereum, 232 

 Sticta, 237 



Stigma, 102, 106, 356 

 Stink horns, 236 

 Stimuli, effects of, 4 



reaction to, 5 

 Stipe, 229, 230 

 Stipules, 393 

 Stolon, 94 



Stoma, 8, 9, 10, 20, 24, 32, 33 

 Stone fruit, 365 

 Storage organs, 18, 59 

 Strawberry, 351, 417 

 Strobilus, 304, 306, 309, 341 

 Stroma, 215 

 Style, 103 

 Suber, 72 

 Sugar, 12, 1 6 

 Surface reduction, 40 

 Suspensor, no, HI, 314, 362 

 Symbiosis, 238 

 Sympetalae, 436 

 Symphytum, 352 

 Synergid, 105, 106, 357, 362 



Tabellaria, 149 



Taraxacum, 453, 454 



Thaxter, 138 



Taxus, 343 



Teleutospore, 223, 224 



Telial stage, 223 



Telophoraceae, 232 



Tendrils, 91, 92 



Tetraspores, 191 



Thallophyta, classification of, 134 



Thallus, 255, 256 



Thistle family, 456 



Thuja, 343 



Tissue, strengthening, 69 



Toadflax, 446 



Toadstools, 227, 229 



Toxins, 143 



Tracheids, 9 



Transpiration, 22 



Transport of water, 52 



Tree ferns, 293 



Truffles, 211 



INDEX. 



Tube cell, 107, 108, 326, 338 



Tubercles, 57 



Tubers, 95 



Turgor, 69 



Twigs, 98 



Twining stems, 90 



Typha, 348, 368, 370 



Ulothrix, 170, 171, 172 

 Umbel, 433, 434 

 Umbellales, 432 

 Uncinula, 213, 214 

 Uredinial stage, 223 

 Uredinales, 221 

 Uredospore, 223, 224 

 Urticales, 403 

 Ustilaginales, 226 

 Ustilago, 227 

 Utricularia, 447 



Vaccinium, 439 



Vacuoles, i, 2, 51, 196 



Valerian, 450 



Variation, 89, 124-129, 157, 165, 170 



Variegated plants, 14 



Vascular bundles, u, 12, 16, 64, 65, 



66, 81, 293 



Vaucheria, 174, 175, 176 

 Veins, u, HI, 268, 283 

 Velamen, 390 

 Veltheimia, 369 

 Velum, 228, 229 

 Veratrum, 385 

 Vernonia, 458 

 Vessels, 64, 66 

 Viburnum, 449 

 Volva, 229, 230 

 Volvocales, 155 

 Volvox, 1 60, 161 



Wall cells, 247, 287, 318, 325, 337, 

 361 



formation of, 48-50 

 Ward, 23 

 W'ater, capillary, 44 



hygroscopic, 44 



lily, 365, 405, 407 



