Tolypothrix, 428. 
Townsendia, 349. 
Trabutia, 237. 
Tradescantia, 71, 72, 73, 1375 143, 147, 462. 
Trematodon, 442. 
Trentepohlia, 188. 
Tribulus, 230, 23r. 
Tricamphora, 332. 
Triceratum, 174, 263, 266, 275. 
Trichia, 333. 
Tricho aena, 238. 
Tricholoma, 485. 
Trichomanes, 479. 
Trichostema, 54, 445. 
Trifolium, 53, 139, 186, 219, 409, 519. 
Triglochin, 375. | 
Trilisa, 145. 
Triodia, 407. 
Tripsacum, 420. 
Teena 
thelium, 259. 
Tsyblidium, 237. : y 
a, 43, 44, 207, 209, 442, 467. 
Tubsriat 202, 286, oh 
Tubulina, 333. 
Tussilago, 465. 
Tylostoma, 209, 286. 
Typha, 467. 
Udora, 24,374, 405. 406, 462. 
leomyces, 237. 
Ulex, 460. 
Ulmaria, 52. 
Ulmus, 147. 
Uncinula, 413. 
Unona, 446. 
Umbellularia, 340. 
Umbilicaria, 244, 245. 
Urceolaria, 249. 
tenon Nie 36 8 
©, 55» 2375 416, 435, 436, 437, 438, 479. 
Urochloa, 422, i al 
Uromyces, 57, 136, 237, 284, 436. 
241. 
snea, 
Ustilago, 57, 136, 175, 288, 237, 362, 443, 481. 
Utricularia, 52, 146, 155, 156, 478. 
Vaccinium, 54, 120, 153, 285. 
Valeriana, 112, 460. . 
Valsa, 210, 211, 286, 
Vi a, 142, 234, 469, 470. 
Xii 
bod 
| Vanilla, 417. 
| Vascoucellia, 92. 
| Vaucheria, 339. 
| Veratrum, 185, 384. 
| Verbascum, 383. 
| Verbena, 137. 
Verbesina, 136. 
| Vermicularia, 177, 288. 
| Vernonia, 136, 143. 
Veronica, 46r. 
Verrucaria, 198, 259. 
Vicia, 186, 522. 
Victoria, 147. 
Vilfa, 463, 464. 
Viola, 286, 313, 377,475, 484. 
Vitis, 104, 226, 237, 283, 330. 
Vittaria, 147. 
Volutella, 82, 337. 
Volvaria, 487, 488. 
Volvox, 402. 
Weingaertneria, 407. 
Weldenia, 186. : 
Whipplea, 364, 
Willoughbaeya, 16. 
Wistaria, 324. 
Wolffia, 462. 
Woodsia, 349. 
Wyethia, 110. 
Xanthidium, 295, 296, 297. 
Xanthium, 417. aided 
Xanthorrhiza, 474. 
Ximenia, 141, 144. 
Xolisma, 153. 
Xylaria, 237. 
Xylographa, 258. 
Xyris, 159, 160, 238. 
Yucca, 119, 158, 288, 330, 377, 392, 440. 
Zamia, 107. 
Zea, 99, 520, 
Sensula 231, 232, 286. 
Zephyranthes, 287. : a 
Zinnia, 395, 412. 
izania, 53. 
Zizia, 60. 
Zygodesmus, 82. 
Zygophyllum, 230. 
