590 
Succory, Gum, 534 
Hog’s, 524 
Lamb, 524 
Sumac, Poison, 273 
Swamp, 273 
Sundial, 225 
Sundrops, 296 
Sunflower, Brook, 476 
Common, 465 
False, 451, 481 
Red, 463 
Stiff, 466 
Swamp, 481 
Tickseed, 478 
Tuberous, 467 
Swallow-wort, 169, 315 
Black, 319 
White, 319 
Sweet Betty, 149 
Sweet-brier, 214 
Sweet-clover, White, 232 
Yellow, 234 
Sweethearts, 397 
Sweetpea, Tuberous, 250 
Wild, 238 
Sweetroot, 242 
Sweet William, Wild, 149 
Swine’s-bane, 114 
Symphytum officinale, 337 
Syntherisma sanguinalis, 26 
linearis, 27 
Tanacetum vulgare, 495 
Tank, 305 
Tansy, 495 
False, 497 
Goose, 208 
White, 487 
Wild, 455 
Taraxacum erythrospermum, 537 
officinale, 536 
Tare, 246 
Hairy, 249 
Tar-fitch, 252 
Tarweed, 291, 479 
Yellow, 336 
Tea, Jerusalem, 108 
Jesuit, 108 
Mexican, 108 
Spanish, 108 
Teasel, 403 
Tephrosia virginiana, 238 
INDEX 
Tetterwort, 169 
Teucrium canadense, 347 
Thaspium aureum, 304 
Thimbleweed, 160 
Thistle, Asses’, 516 
Bitter, 522 
Blessed, 522 
Blue, 342 
Bull, 365, 512 
Bur, 510 
Canada, 514 
Card, 403 
Common, 510 
Cotton, 516 
Creeping, 514 
Cursed, 514 
Downy, 516 
English, 540 
Fragrant, 512 
Holy, 522 
Horse, 512 
Lance-leaved, 510 
Maltese, 519 
Mexican, 368 
Milk, 537, 538, 540 
Napa, 519 
Our Lady’s, 522 
Pasture, 512 
Perennial, 514 
Plume, 512 
Queen Mary’s, 516 
Roadside, 512 
Russian, 117 
St. Barnaby’s, 518 
St. Benedict’s, 522 
Scotch, 516 
Silver, 516 
Spear, 510 
Spotted, 522 
Swine, 537 
Tall, 512 
Texas, 368 
‘Tumbling, 117 
Water, 403 
Yellow-spined, 513 
Thlaspi arvense, 174 
Thorn, Maize, 517 
Thornapple, 375 
Hairy, 376 
Purple, 376 
Thoroughwort, 417 » 
Thousand-leaf, 486 
