* XIV 
Trixis, 230. SiN Viguiera, 287, 290. 
Trollius, 99, 167, 228. Viola, 22, 40, 81, gr, 100, 121, 169, 193, 195, 213, 341- 
Tropzolum, 45, 308. Vitellaria, 227. 
Tropidocarpum, 321. Vitis, 24, 66, 136, 158, 159, 280, 317. 
Troximon, 171, 325. Vleckia, 272. 
Tsuga, 310. Vochysia, 32. ‘ 
Tuber, 217. Volutella, 95. 
Tubulina, 72. Volvox, 141. 
Tumion, 308. Vriesia, 192. 
Typhula, 94. 
: Waldsteinia, 343. 
Ulmaria, 270. Waltheria, 272. 
Ulmus, 66, 136. Warszewiczia, 107. 
Ulota, 165. Washingtonia, 33. 
Ulothrix, 336. Webera, 25. 
Umbellularia, 327. Willardia, 286. 
Uncinula, 72, 161, 282. Wintera, 94. 
Ungnadia, 349. Wissadula, 312. ’ 
Uniola, 376. Wisteria, 269, 314. 
Uredo, 23, 348. Withania, 311. 
Urocystis, 292. Wittrockia, 309. 
Uromyces, 279, 292, 316. Wyethia, 325. 
Urtica, 172, 223. 
Usnea, 173... - Xanthium, 188, 200. 
Ustillago, 225, 345. ; Xenococcus, 335. 
Utricularia, 70, 186. Xylocopa, 376. 
Uvularia, 1, 102, 272. Xylosma, 311. 
Xylothermia, 308. 
Vaccinium, 122, 136, 152, 171, 188, 191, 210, 379. | Xyris, 187, 254 
Valeriana, 263. Xyrophyllum, 1gr, 204. 
Valerianella, 324. 
Vallisneria, 128. Yucca, 33, 71, 165, 187, 193, 294, 379. 
Pama Zami 
‘ amites, 132, 379. 
(pore goa 228. ; Ranthorhice, See. 
Vaseyanthus, 193. Zea, 310. 
Vaucheria, 141. Zexmenia, 196, 287. 
Venturia, 94. Zinnia, 287. 
Verbascum, 343. Zizania, 33, 57. 
Verbena, 46. Zizia, 97. 
Verbesina, 253. : Zizyphus, 96. 
Vernonia, 176, 196, 286, 331, 377. Zostera, 259, 310, 337+ 
Veronica, 66, 81, 97, 122, 172, 214, 343. Zygadenus, 172, ror, 222. 
Viburnum, 33, 38, 100, 187, 190, 251, 379. Zygnema, 143. 
Vicia, 159, 223, 321. 
