Tabebuia, 28. 
Tabellaria, 246. 
Tabernemontana, 348. 
‘leniopteris, 95, 275. 
Tagetes, 304. 
Talinum, 135. 
Tanacetum, 235. 
Taraxacum, 1, 5,6, 14, 17) 53, 235) 443- 
Taxodium, 28, 500. 
Tecoma, 54, 162. 
Tellima 274. 
Tessela, 246. 
Tetraphis, 494. 
Teucrium, 65, 236. 
Thalia, 470. 
Thalictrum, 269, 475, 480. 
Thalloidima, 377. 
Thaspium, 482. 
Theloschistes, 353. 
Thelopodium, 493. 
Thermopsis, 304. 
‘Lhibaudia 137, 138. 
Thrinax, 169. 
Thuidium, 274, 275. 
huja, 362. 
Thuya, 44. 
Tillandsia, 275, 500. 
Tilia, 61, 158, 164, 167. 
Tilmadoche, 82. 
Tinantia, 348. 
Tipularia, 186, 187, 192, 416. 
Tissa, 56, 61, 232, 274, 277, 361- 
Todea, 437- 
Tomasellia, 377. 
Tonina, 416. 
Townsendia, 493. 
Tradescantia, 348, 470, 493- 
Trautvetteria, 225, 475, 480. 
Trematocarpus, 275, 347- 
Trichia, 77, 81. 
richocoronis, 131. 
Trichodon, 117. 
Trichomanes, 127, 325, 347, 466- 
Trichophila, 275, 276. 
Trichestema, 65, 236, 341, 413, 483- 
Tridax, 269. 
_ Trientalis, 294. 
Trifolium, 61, 88, 122, 223, 230, 233» 253s 394s 4°9- 
Triglochin, 409. 
Triodia, are 
Triosteum, 252, 253. 
Triplasis, 202. 
Tripsacum, 196. 
‘Trisetum, 201, 342. 
E Sabai 169. 
suga, 67, 347, 478. 
Tamesalania, ats, 
Tubulina, 74, 76, 79, 80. 
‘Tunica, 343, 344. 
» 497- 
Tinastions 64: 
Typha, 177, 238. 
Ulmus, 162, 167,169. 
ota, 367. 
Umbilicaria, 3545 
Xill 
Uncinula, 306. 
Unifolium, 66. 
Uniola, 203, 342. 
Urceolaria, 355. 
Uredo, 297, 348, 492. 
Urena, 133- 
Urocystis, 220, 442. 
Uromyces, 226, 297, 442, 492- 
Uropappus, 301, 496. 
Urtica, 237. 
Usnea, 353- 
Ustilago, 297, 348. 
Utricularia, 58, 64, 236, 288, 289, 290, 348. 
Uvularia, 66. 
Vacciniopsis, 433, 434. 
Vaccinium, 59, 64, 129, 138, 166, 235, 409, 433) 437, 
ote 
Vagnera, 480. 
Valeriana, 279, 500. 
Valsa, 364. 
Venturia, 442. 
Verbascum, 54, 236, 270. 
Verbena, 54, 65, 236. 
Verbesina, 269, 485- 
Vermicularia, 252. 
Vernonia, 53, 83, 485. 
Veronica, 56, 57, 64, 409, 500. 
Viburnum, 62, 70, 94, 165, 234, 483. 
Vicia, 241, 442. 
Victoria, 500. 
Viguiera, 304, 378. 
Vincetoxicum, 443. 
Viola, 61, 136, 232, 448, 474, 482: 
Vitis, 61, 168, 233, 303, 482, 500. 
Volvaria, 264. 
Volvox, 246. 
Waldsteinia, 442. 
Washingtonia, 28. 
Williamsonia, 135, 335- 
Wimmeria, 348. 
Winchellia, 454. 
Winterania, 46. 
Wistaria, + 
Woodsia, 58, 67, 465. 
Woodwardia, 230, 239, 459- 
Wrangelia, 109. 
Xanthidium, 244. 
Xanthium, 10, 17, 53, 235, 251, 252, 286. 
Xanthorrhiza, 225. 
Xanthoxylum, 88, 131, 159, 263. 
Xylosma, 348. 
Xyris, 59, 66, 238. 
Yucca, 276, 348, 364, 416. 
