444 



INDEX. 



Sundew, go 



Symbiosis, 318 



Sympetalae, 283, 298 



Synergids (Syn-er'gids), 231, 233 



Taxodium distichum, 395 

 Teasel, 289 



Teleutospore, 130, 135 

 Temperature, 91, 92 

 Tensions, tissue, 29, 30 

 Tetraspores, 117 

 Tissues, synopsis of, 48 

 Touch-me-not, dissemination of 



seed, 370 

 Transpiration, 33-41 

 Trichomes, 48 

 Trillium erectum, 251 

 Trillium grandiflorum, 221-224 ; 



formation of flower, 347, 348 

 Tubiflorae, 284, 299 

 Turgescence, 14, 28 

 Turgescent, 15 

 Turgid, 15 



Turgidity, 28 ; restoration of, 28 

 Twin flower, 289 



Ulmaceae, 266, 294, 297 

 Umbellifiorae, 281, 298 

 Uncinula, 136, 138 

 Unifolium, 254 

 Uredinea^(U-re-din'e-ae), 129-136, 



139 

 Uredospore, 131, 135 

 Uromyces caryophyllinus, 323 

 Urtica, 265 

 Urticaceae, 265, 297 

 Urticiflorae, 265, 297 



Vascular bundle, 43 ; structure 



of, 44-47 

 Vaucheria, 105-109 

 Vaucheria geminata, 108 



Vaucheria sessilis, 106-107 



Vessels, 45, 46 



Vetch, root tubercles of, 318, 319 



Vicia sativa, dissemination of 

 seed, 369 



Viola cucullata, 354 



Violet, endosperm and embryo, 

 235 ; pollenation of, 353, 354 



Virgin's bower, 269, 270 ; dis- 

 semination of seed, 372, 373 



Volva, 334, 335 



Wake robin, 221 



Walking fern, 173, 413 



Water moulds, 123-126 



Water plantain, 254 



Water vapor, 34 



Wheat rust, 129 



Whortleberry, 283 



Wild carrot, 281, 282 



Willow, 262 



Witch hazel, 414 



Wolffia, 315 



Wood fibres, 48; parenchyma, 48 



Xanthidium, 98 

 Xylem, 44, 45, 47, 48 



Yellow water lily, 407 



Zamia, 219 



Zamia integrifolia, 216 



Zonal distribution of plants, 



400-408 

 Zoogonidium (Zo-o-go-nid'i-um), 



101, 102, 105, 106 

 Zoospores, 101, 103, in, 112 

 Zygnema (Zyg-ne'ma), 98 

 Zygomorphic, 289 

 Zygospore (Zy'go-spore), j., 95 



97, 98, 122 

 Zygote (Zy'gote), 95, 122 



