609.
Tourneuxia, 545.
Toxanthera, 538.
Toxicodendron, 321.
Toxicophloea, 437.
Toxocarpus, 451, 453.
Trachelium, 543.
Trachelium, 544.
Trachydium, 407.
Trachylobium, 256.
Trachyphrynium, 149.
Trachyphrynium, 148.
Trachypogon, 87.
Trachyspermum, 413.
Trachystigma, 501.
Traganum, 179, pl. 40.
Tragia, 313.
Tragiopsis, 413.
Tragopogon, 545.
Tragus, 84.
Trapa, 397.
Traunia, 453.
Treculia, 168.
Treichelia, 543.
Trema, 164, pl. 30.
Trematosperma, 333.
Triachyrium, 95.
Triadenia, 361.
Triainolepis, 525.
Trianoptiles, 108.
Trianosperma, 538.
Trianthema, 189, pl. 43.
Triaspis, 307.
Tribulus, 294.
Tricalysia, 527, 528.
Trichilia, 305, pl. 76.
Trichocalyx, 512.
Trichocaulon, 454.
Trichocladus, 238, pl. 64.
Trichodesma, 466.
Trichodypsis, 113.
Trichogyne, 555.
Tricholaena, 82.
Trichonema, 141.
Trichoneura, 607.
Trichoon, 101.
Trichopteryx, 98.
Trichosandra, 452.
Trichosanthes, 538.
Trichoscypha, 328.
Trichostachys, 525.
Trichostephanus, 372.
Triclisia, 202, 203.
Tricomariopsis, 307.
Tridax, 580.
Tridesmostemon, 423.
Tridianisia, 334.
Trifolium, 261, 275, 281.
Triglochin, 75.
Trigonella, 283.
Trigonocapnos, 212, pl. 52.
Triguera, 482.
Trimeria, 371.
Trimorphopetalum, 343.
Triodia, 102.
Triphasia, 298.
Triphlebia, 103.
Triplachne, 97.
Triplocephalum, 559.
Triplochiton, 355.
TRIPLOCHITONACEAE, 354.
Tripodandra, 203.
Tripogon, 92.
Tripteris 557, 563.
Triraphis, 100.
Trisetaria, 96.
Trisetum, 100.
Tristachya, 98.
Tristellateia, 308.
Tristemma, 395.
Tristicha, 231, pl. 57.
Triticum, 90.
Tritonia, 142.
Tritonixia, 142.
Triumfetta, 349.
TRIURIDACEAE, 4, 78.
Trixago, 484.
Trochetia, 357.
Trochomeria, 539.
Trochomeriopsis, 537.
TROPAEOLACEAE, 28, 291.
Tropaeolum, 291.
Trymatococcus, 165.
Tryphia, 153.
Tryphostemma, 376.
Tsimatimia, 362.
Tuberaria, 365.
Tubiflora, 503.
Tulbaghia, 130.
Tulipa, 129.
Tumboa, 72.
Tunica, 195.
Turgenia, 404.
Turnera, 374.
Turnera, 374.
TURNERACEAE, 25, 373, pl. 105.
Turraea, 305, 609.
Turraeanthus, 305.
Turritis, 218, 223.
Tussilago, 567.
Tylophora, 453, 456.
Tylophora, 446.
Tylophoropsis, 446.
Tylostemon, 210.
Tylostemon, 210.
Typha, 72.
TYPHACEAE, 3, 72.
TYPHACEAE, 73.
Typhonodorum, 116.
Tysonia, 467.
Tzellemtinia, 611.

Uapaca, 321.
Ubochea, 468.
Uebelinia, 196.
Ulex, 265.
ULMACEAE, 10, 163, pl. 30.
ULMACEAE, 164.
Ulmaria, 241.
Ulmus, 163.
UMBELLIFERAE, 17, 43, 46, 401, pl. 119.
Umbilicus, 233.
Umtiza, 253.
Uncaria, 525.
Uncaria, 499.
Uncarina, 498.
Uncinia, 107.
Unona, 206.
Unona, 206.
Uragoga, 524, 525.
Uraria, 285.
Urelytrum, 85.
Urena, 351.
Urera, 169.
Urginea, 126.
Urobotrya, 173.
Urochlaena, 101.
Urophyllum, 529.
Urospermum, 546.
Urotheca, 397.
Ursinia, 580.
Urtica, 168.
URTICACEAE, 7, 8, 15, 168, pl. 32.
URTICACEAE, 163, 164, 187.
Urticastrum, 169.
Usteria, 428.
Utricularia, 501, pl. 141.
Uvaria, 206.
Uvaria, 206.
Uvariastrum, 206.
Uvariopsis, 205.

Vaccaria, 196.
VACCINIACEAE, 415.
Vaccinium, 415.
Vachellia, 247.
Vahadenia, 436.
Vahea, 436.
Vahlia, 233.
Vaillantia, 521.
Valeriana, 534, pl. 146.
VALERIANACEAE, 65, 66, 534, pl. 146.
Valerianella, 534.
Valerianodes, 468.
Vallisneria, 78.
Vallota, 138.
Vandellia, 494.
Vangueria, 519.
Vanilla, 154.
Varangevillea, 469.
Varthemia, 560.
Vateria, 363.
Vatica, 363.
Vausagesia, 359.
Velezia, 196.
Vella, 225.
Vellozia, 139.
VELLOZIACEAE, 6, 139, pl. 20.
Veltheimia, 127.
Velvitsia, 486.
Venana, 234.
Venindium, 548.
Ventenata, 99.
Ventilago, 345, pl. 88.
Veprecella, 397.
Vepris, 298.
Verbascum, 489.
Verbena, 469.
VERBENACEAE, 50, 52, 54, 55, 60, 467, pl. 133.
Verbesina, 582.
Verdickia, 131.
Vernonia, 570, pl. 150.
Vernonia, 568.
Veronica, 487.
Verschaffeltia, 113.
Viborgia, 265.
Vibernum, 533, pl. 145.
Vicia, 269, 270.
Vicoa, 560.
Vieusseuxia, 144.
Vigineixia, 546.
Vigna, 278.
Vigna, 278.
Vignopsis, 277.
Vilfa, 95.
Villarsia, 429.
Vinca, 440.
Vinca, 440.
Vincetoxicum, 449.
Viola, 367.
VIOLACEAE, 24, 366, pl. 103.
Viraea, 560.
Viraea, 546.
Virecta, 532.
Virgilia, 258.
Virola, 207.
Viscum, 175.
Vismia, 361.
Visnea, 360, pl. 98.
VITACEAE, 30, 60, 345, pl. 89.
Vitex, 470.
Vitis, 346.
Vitis, 346.
Voacanga, 439.
Voandzeia, 277.
Vogelia, 218, 420.
Voharanga, 612.
Vohemaria, 446.
Volkensia, 570.
Volkensiella, 612.
Volkensiophyton, 508.
Volutarella, 550.
Vonitra, 114.
Vossia, 85.
Vouacapoua, 289.
Vouapa, 253.
Voyria, 429.
Vulpia, 93.

Wachendorfia, 135.
Wahlenbergia, 544.
Wahlenbergia, 544.
Walafrida, 489.
Walleria, 139.
Wallinia, 188.
Walpersia, 263.
Waltheria, 356.
Wangenheima, 93.
Warburgia, 366.
Warionia, 552.
Warneckea, 393.
Warpuria, 508.
Watsonia, 141.
Webbia, 572.
Webera, 526.
Wedelia, 582, 583.
Weihea, 388, pl. 112.
Weingaertneria, 607.
Weinmannia, 235, pl. 62.
Wellstedia, 463.
Welwitschia, 72.
Welwitschiella, 583.
Welwitschiina, 202.
Werneria, 575.
Whiteheadia, 127.
Whitefieldia 505.
Wiborgia, 265.
Widdringtonia, 71.
Wielandia, 319.
Wiesnera, 76.
Wikstroemia, 383.
Willdenowia, 120.
Willkommia, 91.
Willugbaeya, 571.
Winklerella, 231.
WINTERANCEAE, 23, 54, 366.
Wisneria, 76.
Wissadula, 352.
Withania, 483.
Witsenia, 143.
Wolffia, 119.
Wolffiella, 119.
Woodfordia, 385.
Woodia, 450.
Wormia, 358.
Wormskioldia, 374, pl. 105.
Wormskioldia, 374.
Wrightia, 433.
Wrightia, 433.
Wulfhorstia, 303.
Wurmbea, 128.

Xanthium, 564.
Xanthocercis, 270.
Xanthochymus, 362.
Xanthosoma, 116.
XANTHOXYLEAE, 295.
Xanthoxylum, 296.
Xenisma, 557.
Xeranthemum, 550.
Xerochlamys, 347.
Xerocladia, 246.
Xeropetalum, 357.
Xerophyta, 139.
Xeroplana, 467.
Xerotium, 556.
Ximenesia, 582.
Ximenia, 174.
Xylia, 247.
Xylocalyx, 486.
Xylocarpus, 303, 305.
Xylochlaena, 348.
Xyloolaena, 348.
Xylopia, 204.
Xylopia, 204.
Xylopicrum, 204.
Xylopleurum, 398.
Xylotheca, 369.
Xymalos, 208.
XYRIDACEAE, 4, 121, pl. 14.
Xyris, 121, pl. 14.
Xysmalobium, 450.

Yaundea, 244.
Yucca, 134.

Zaa, 497.
Zaluzianskia, 492.
Zamioculcas, 115.
Zanha, 342.
Zannichellia, 74.
Zantedeschia, 117.
ZANTHOXYLEAE, 295.
Zanthoxylum, 296.
Zapania, 468.
Zea, 83.
Zehneria, 537.
Zenkerella, 253.
Zenkerina, 503.
Zeuxine, 155.
Zilla, 227.
Zimmermannia, 323.
Zingiber, 147.
ZINGIBERACEAE, 5, 146, pl. 24.
Zinnia, 581.
Ziziphora, 479.
Zizyphus, 344.
Zoegea, 550.
Zollikoferia, 547.
Zombiana, 515.
Zornia, 266.
Zostera, 73.
ZOSTERACEAE, 73.
Zoysia, 84.
Zozimia, 408.
Zyganthera, 118.
Zygia, 248.
Zygodia, 435.
Zygonerion, 434.
Zygoon, 527.
ZYGOPHYLLACEAE, 12, 27, 29, 30, 32, 36, 37, 293, pl. 72.
Zygophyllum, 295.
Zygoruellia, 505.