578 



INDEX 



Tobacco, 471. 



Todea, 274, 275. 



Tolypella, 122, 123, Fig. 94. 



Tolypothrix, 82, Fig. 56. 



Tomato, 526. 



Tonoplast, 35, 36. 



Torreya, 343, 347, 535, 543. 



Tovariacese, 444. 



Toxalbumen, 480. 



Toxin, 76. 



Trabecula, 318. 



Tracheary tissue, 51, 58, 59, 254, 256. 



Tracheid, 58, 298. 



Tradescantia, 41, 44, 47, 63, 326, 377, 393; 



T. Virginica, Fig. 369 ; T. zebrina, Fig. 



347. 



Trama, 183. 



Trauslocation of food, 465. 

 Transpiration, 467, 470, 471, 472. 

 Traps, 362, 404. 



Traveller's-tree (see "Ravenala"). 

 Tree-fern, 246, 248, 260, 261, 279. 

 Tremella, 179, Fig. 145. 

 Tremellinea, 175, 179. 

 Trentepohlia, 101.- 

 Treubia, 215. 



Trichia, 69, 70, Figs. 49, 50. 

 Trichina, 149. 



Trichodesmium : T. erythrseum, 79. 

 Trichogyne, 137, 142, 144, 173, 191. 

 Trichomanes, 257, 273, 277, 278, 279; T. 



cyrtotheca, Figs. 244, 245; T. parvu- 



lum, Fig. 244. 

 Trichome (see also "Hair," "Scale"), 



22, 29, 260, 410. 

 Trichophilus, 101. 

 Tricoccse, 445. 

 Triglochin, 381. 

 Trigonantheae, 219. 

 Trillium, 23, 361, 365, 379, 505, 519, 547, 



548, 550 ; T. erectum, 519. 

 Trimorphous flowers, 525. 

 Troehodendracese, Trochodendrinese, 443. 

 Tropseolum: T. majus, 405, 424, 516, 



517, Figs. 384, 485. 

 True Fungi (see " Eumycetes "). 

 True Mosses (see also "Musci"), 201, 



202, 223. 



Truffle (see also "Tuber"), 168, 169. 

 Trumpet-creeper (see also " Tecoma "), 



28, 504, 545. 

 Tsuga, 335, 343, 344; T. Canadensis, 



Fig. 309. 

 Tuber, 23, 35, 362, 503; of Equisetum, 



296; Liverworts, 214. 

 Tuber, Tuberinese (see also " Truffle ") 



168, 169, Fig. 134. 

 Tubiflorie, 449, 452, 453, 458. 



Tulip, 24, 26, 29, 362, 484, 488, 504. 

 Tulip-tree (see also " Liriodendron"), 



425, 545. 



Turgor, Turgescence, 466. 

 Turnip, 28, 363. 

 Twining stems, 491, 504. 

 Typha, 379, 383, 405. 

 Typhacese, 383. 



Ulmacese, 11, 419. 



Ulmus, 11, 409, 419; U. alata, 409; U. 



Americana, 11; U. campesm,Fig.401. 

 Ulothricaceae, 107. 



Ulothrix, 101, 104; U. zonata, Fig. 71. 

 Ulva, 17, 42, 93, 94, 99, 100, 101, 102, 104; 



U. lactuca, Fig. 7 ; U. latissima, Fig. 



70. 



Ulvacese, 107. 

 Umbel, 366. 

 Umbelliferse, 442. 

 Umbelliflorse, 424, 442, 448. 

 Umbellularia Californica, 425, 428 ; Fig. 



415. 



Unicellular organisms, 3, 49. 

 Unicellular plants, 13. 

 Uredinales, 175. 

 Uredospore, 176, 179. 

 Uric acid, 1. 

 Urocystis Cepulse, 175. 

 Uromyces, 176, 177 ; U. Caladii, Fig. 142. 

 Urticacese, 419. 

 Urticales, 11, 414, 419. 

 Usnea, 189, 190, 192 ; U. barbata, Fig. 153. 

 Ustilaginese, 174. 



Ustilago, 174, 175; U. Maydis, Fig. 141. 

 Utricle, 368. 

 Utricularia, 26, 217, 404, 453. 



Vacuole, 35, 36, 46, 81. 



Valeriana, 454, 455; V. officinalis, Fig. 



445. 



Valerianacese, 459. 

 Vallisneria, 370, 382, 383, 465 ; V. spiralis, 



Fig. 355. 



Valve (of Diatom) , 87. 

 Vanilla, 375, 397. 

 Vascular bundle, 57, 58, 59, 221, 254, 255, 



262, 271, 274, 283, 296, 298, 308, 313, 



314, 327, 328, 333, 334, 335, 374, 403, 



406, 470; Cycads, 327, 328; Conifers, 



334, 335; Dicotyledons, 403-406; 



Equisetum, 296; Ferns, 255, 262; 



Lycopodium, 308; Marattiaceae, 271; 



Monocotyledons, 374 ; Osmundaceae, 



274 ; Selaginella, 313. 

 Vascular plants, 22, 466. 

 Vaucheria, 55, 113, 114, 115, 116, 153, 154, 



155, 194, 474, 498; V. aversa, Fig. 88; 



