318 



INDEX 



Torreya, 227. 



Tracheid, 124. 



Tracheary tissue, 124. 



Tradescautia, 4, Fig. 1. 



Trailing arbutus (Epigxa repens), 



214. 

 Traveller's tree (Ravenala Madagas- 



cariensis), 193. 

 Tree-ferns, 131. 

 Tremella, 94, Fig. 25. 

 Tricliia, 32, Fig. 4. 

 Trichina, 90. 



Trichogyne, 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 Leguminosae), 



280. 



Tuberose, 190. 

 Tubiflorae, 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. 



Umbelliferse, 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, 189, 

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

 172; of Dicotyledons, 200; Ferns, 

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

 cotyledons, 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 (Dionaea) , 205, 257. 



Veronica, 215, Fig. 53. 



Vertebrates, absence of non-sexual 

 reproduction in, 25. 



Vessels, 124. 



Vine family ( Vitacere) , 209. 



Violet, 209. 



Vittaria, 126, 127. 



Volvocacese, Volvocineae, 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, W, 103, 262, 263, 269. 

 Water-ferns (see also " bydropte- 



rides"), 151. 

 Water-lily (see also " Nymphaea- 



ceje"),204, 207, 208. 

 Water-moulds (see also ' ' Saproleg- 



nia, Saprolegniacese "), 81, 82, 83, 



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



