INDEX 



347 



Sympetalae, 268. 

 Sym petaly, 226, 227. 

 Symplocarpus, 243. 

 Syncarpy, 199, 219, 225. 

 Synergid, 202, 204, 205, 206. 



Tanacetum, 279. 

 Tansy: see Tanacetum. 

 Taraxacum, 213, 277, 278. 

 Taxonomy, 297. 

 Teleutospore, 64, 65. 

 Tension of tissues, 298. 

 Testa, 184, 211. 

 Tetracyclae, 268. 

 Tetrad, 103. 

 Tetraspore, 43. 

 Teucrium, 230, 274, 275. 

 Thallophytes, 2, 4, 172. 

 Thermotropism, 307. 

 Thistle : see Cnicus. 

 Thorn apple : see Datura. 

 Thuja, 193. 

 Thymus, 274. 

 Tickseed : see Coreopsis. 

 Tissues, 280. 

 Toad-flax : see Linaria. 

 Toadstools, 68. 

 Tobacco : see Nicotiana. 

 Tomato : see Lycopersicum. 

 Tracheae, 285, 286. 

 Tracheids, 286. 

 Transfer of water, 300. 

 Transpiration, 301. 

 Tree fern, 140. 

 Trichia, 75. 

 Trichogyne, 43, 44. 

 Trillium, 207, 246, 265. 

 Truffles, 60. 

 Turgid ity, 298. 

 Typha, 239, 240. 



U 



Umbel, 266, 267. 

 Umbelliferae, 266. 

 Umbellifers, 266. 

 Ulmus, 210, 256. 

 Ulothrix, 12, 13, 22. 

 Uredo, 64. 

 Uredospore, 63, 64. 



Vaccinium, 269. 



Vascular bundle, 232, 234, 287, 291. 



Vascular cylinder, 234, 287. 



Vascular system, 129, 139. 



Vaucheria, 26, 27, 28. 



Vegetative multiplication, 9. 



Veins, 141, 142. 



Venation, 233. 



Verbascum, 275. 



Verbenaceae, 275. 



Vernation, 143. 



Vernonia, 279. 



Veronica, 275. 



Vicia, 265. 



Violet, 211, 229. 



W 



Wall cell, 180. 



Walnut, 256. 



Water, 83, 314. 



Water ferns, 158. 



Water-lily, 223, 261. 



Water-lily family : see Nymphaea- 



cese. 



Water moulds, 51. 

 Wheat rust, 63, 64, 65, 66. 

 Willow : see Salix. 

 Wind, 315. 

 Wintergreen : see Gaultheria. 



