Thunderwood, 273 
Ticks, Seed, 243 
Wool, 243 
Tickseed, Lance-leaved, 471 
Tall, 472 
Tick-trefoil, Hoary, 243 
Showy, 244 
Timothy, False, 45 
Tiniaria scandens, 105 
Tithymal, 271 
Titters, 247 
Toadflax, 379 
Tobacco, Indian, 411 
Ladies’, 441 
Sailor’s, 496 
Wild, 411 
Tocalote, 519 
Tomatillo, 369 
Tomato, Husk, 370 
Strawberry, 369 
Tragopogon porrifolius, 533 
pratensis, 532 
Tread-softly, 260, 365 
Trefoil, Bird’s-foot, 237 
Yellow, 234 
Tribulus terrestris, 259 
Trichostema dichotomum, 348 
Trifolium agrarium, 231 
arvense, 229 
procumbens, 231 
Triosteum perfoliatum, 401 
Trompillo, 367 
Tumbleweed, 122 
Russian, 117 
Turkey-strip, 50 
Tussilago Farfara, 501 
Umbrella Leaves, 502 
Umbrella-wort, Hairy, 130 
Heart-leaved, 129 
Narrow-leaved, 131 
Urtica dioica, 88 
gracilis, 87 
holosericea, 89 
Valerian, False, 507 
Valerianella Locusta, 402 
radiata, 402 
Velvet-leaf, 276 
Venus’s Looking-glass, 408 
Veratrum viride, 78 
Verbascum Blattaria, 378 
INDEX 591 
Verbascum Thapsus, 377 
Verbena bracteosa, 345 
hastata, 344 
officinalis, 343 
stricta, 346 
urticefolia, 343 
Verbesina alternifolia, 468 
encelioides, 470 
helianthoides, 469 
Vernonia altissima, 412 
fasciculata, 413 
gigantea, 412 
illinensis, 414 
maxima, 412 
Veronica agrestis, 387 
officinalis, 383 
peregrina, 385 
serpyllifolia, 385 
Vervain, Blue, 344 
European, 343 
Hoary, 346 
Large-bracted, 345 
Mullein-leaved, 346 
Nettle-leaved, 346 
White, 343 
Woolly, 346 
Vetch, Bird, 247 
Blue, 247 
Common, 246 
Cow, 247 
Hairy, 249 
Pebble, 246 
Spring, 246 
Tufted, 247 
Winter, 249 
Vetchling, Yellow, 253 
Vicia Cracca, 247 
sativa, 246 
villosa, 249 
Vincetoxicum nigrum, 319 
Vine, Love, 324 
Sand, 319 
Wild Sweet Potato, 320 
Wartwort, 445 
Water-pepper, 101 
Mild, 102 
Waxballs, 262 
Waybent, 66 
Waybread, 391 
Weed, Ague, 417 
Asthma, 411 
