318 



INDEX 



Torreya, 227. 



Traclieid, 124. 



Traoheary tissue, 124. 



Tradescantia, 4, Fig. 1. 



Trailing arbutus (Epigsea repens), 



214. 

 Traveller's tree {Ravenala Madagas- 



cariensis), 193. 

 Tree-lerns, 131. 

 Tremella, 94, Fig. 25. 

 Tricliia, 32, Fig. 4. 

 Trichina, 90. 



Triehogyne, 74, 75, Fig. 20. 

 Trichomanes, 127, 135, Fig. 35. 

 Tricoccse, 210. 

 Trillium, 190, 239. 

 Tropics, 231, 234, 240. 

 Tropoeolum (see also "Nasturtium "), 



249, 250, 251, Fig. 56. 

 True mosses (see also "Musci"), 



113, 114, 115, 116, 117, 120, Figs. 



29, 30. 

 Trumpet-creeper {Tecoma radicans), 



214, 249, 252. 

 Tubers, 192, 202, 273. 

 Tubercles (on roots of Leguminosse), 



280. 

 Tuberose, 190. 

 TubiflorsE, 214, 218. 

 Tulip-tree (see also " Lirioden- 



dron "), 207, 230, 238, Fig. 50. 

 Tunicates, cellulose in, 11. 

 Twining stems, 278, 282, Fig. 60. 

 Typhaceae (see also "Cat-tail 



rushes"). 186. 



U 



Ulothrix, 52, Fig. 8. 



Umbel, 212. 



Umbelliferae, 211, 212, 218. 



Unicellular plants, 10, 20, 284. 



Urn (Theca),117, Fig. 30. 



Uromyces Caladii, 89, Fig. 23. 



Utricularia (see also "Bladder- 

 weed"), 108, 204, 258, 259, 270, 

 Fig. 58. 



Vacuoles, 7. 



Vallisneria (see also "Eel-grass"), 

 22. 



Valve (of Diatom), 65. 



Vampyrella, 31. 



Vascular bundles, 113, 124, 134, 140, 

 141, 143, 146, 162, 168, 172, 183, IWl, 

 191, 200, 267, 291 ; of Conifers, 168, 

 172 ; of Dicotyledons, 200 ; Ferns, 

 124, 134 ; Lycopods, 146, 162 ; Mono- 

 cotyJedons, 183. 



Vascular Cryptogams (see "Ferns," 

 " Pteridophytes ") , 122. 



Vascular plants, 14, 108, 220. 



Vaucheria, 57, 58, 59, 82, 83, 84, Fig. 

 12 ; reproduction in, 57, 58 ; struct- 

 ure of thallus, 57 ; V. sessilis, 57, 

 Fig. 12. 



Venation of leaves, 201. 



Venter (of archegonium) , 102, 103, 

 111, 129. 



Venus's fly-trap (Dionsea) , 205, 257. 



Veronica, 215, Fig. 53. 



Vertebrates, absence of non-sexual 

 reproduction in, 25. 



Vessels, 124. 



Vine family (Vitacese), 209. 



Violet, 209. 



Vittaria, 126, 127. 



Volvocacese, Volvocinese, 27, 38, 39, 

 41, 42, 43, 46, 49, 50, 52, 55, 58, 60, 

 76, 77, 79, 284, 285, Fig. 6. 



Volvox, 39, 40, 41, 42, 76, 286, Fig. 6 ; 

 reproduction of, 41. 



W 



Wall-flower, 210, Fig. 51. 

 Washington, 239. 

 Water, 30, 103, 262, 263, 269. 

 Water-ferns (see also " Hydropte- 



rides"), 151. 

 Water-lily (see also "Nymphsea- 



ceEe"),204, 207, 208. 

 Water-moulds (see also "Saproleg- 



nia, SaprolegniacesB "), 81, 82, 83, 



84, 85, 86, 242, Fig. 21. 



