INDEX 



Thlaspi arvense 143-144, 788, f. W 

 Distribution 700, 717, m. 1',', 

 Seed 441, f. J,H 

 Thome XII 

 Thompson, J. 749 

 Thorn-apple 288, 289-291, f. S90 

 Distribution 290 

 Purple syn. Jimson Wei d 

 Thornber, J. J. 834, 859 

 Thome, C. E. 846 

 Thornton, R. W. 846 

 Three-flowered Nightshade 



Distribution 738 

 Three-seeded Mercury 205-207, 45 1, 



718, 788 

 Threshing machines scattering weeds 



Legislation 794, 806-807 

 Thrift, f. 616 

 Thurber, Geo. 754, 822 

 Thyme 268 



Distribution 720 

 Tickle Grass syn. Old-witch Grass 

 Tickseed 352-354, f. S5S 

 Distribution m. ■'■■•) 

 Tilia americana, See f. 682 

 Tillman, O. I. 832, 860 

 Timothy 805, 806 



Distribution 715, 785 



Meadows, weeds of 111. 147, 322, 



660, 845 

 Seed 415, 517, 674, 810, 813, 

 827, 828, 832, 833, f. J,15, 638, 676 

 Impurities 144, 165, 674, 857 

 Tissue, Spongy 598 

 Titus, W. N. 768 



Toadflax 292-294, 788, 794, 808, 849, 

 f. 293 

 Distribution 688, 696, 708, 720, 



m. 29k 

 Seed 473, 814, f. ',73 

 Tobacco 277 

 Flowering 27 7 

 Smooth 696 

 Tolf, R. 846 

 Tomato 6, 277 

 Tomentum 871 



Tomson 753 , „„- 



Torrey, John 753, 754, 756, 759, 760, 



761, 762, 767, 768 

 Touch-me-not 630 

 Tourney, J. W. 861 

 Tourlet, E. H. 738, 846 

 Tovey, J. R. 840 

 Tracv, S. M. 766 



Tragopogon porrifolius. Seed 497, f. ',!>8 

 Distribution 696, 729 

 pratensis f. J,9S 



Distribution 729, 755 

 Seed 497, f. J,9S 

 Trailing Arbutus 702 



Wild Bean 455 

 Transpiration 601, 871 

 Transvaal, Flora of 695-696 

 Trapa natans, Distribution 712 

 Treacle Mustard 741 

 Trefoil, Bird's-foot, Distribution 734 

 Yellow, Seed 453, 640, 787, 810, 811, 

 815, 831, f. J,53, 63S 

 Triboulet 852 

 Tribulus terrestris 203-205, 7 89, f. 20!, 



Distribution 697, m. 205 

 Trichome 871 



Trifolium agrarium 183-184, f. 18!, 

 Distribution 734, 760 

 arvense. Distribution 718, 760 

 hybridum, Seed 450, 812, f. ',51 

 incarnatum, Seed 812 

 pratense, Seed 451, 811. 812, f. \51 

 pratense var., Seed 811, 812 

 procumbens 184-185, 612, 787, f. 185 

 Distribution 718, 760, m. 185 

 Seed 451, f. 1,51 



repens, Distribution 718 

 Seed 450, 813, f. ',>/ 

 Triglochin maritima 820 

 Tristegis glutinosa. Distribution 693 

 Triticum ( Wheat) 

 Seed 813 



(Quack Grass) 7 74 

 Tronmer 861 

 Trubenbach, P. 852 

 True, R. H. 855 

 Tschirch, A. 538, 553 

 Tube cell 516 

 Tuber 871 



Tubular flowers f. 611 

 Tumbleweed 113-116, f. 116 



Distribution 690, 698, 738, m. 116 

 Root svstem 645 

 Seed 434, 834, f. ',3!,, 631 

 Iowa syn. Tumbleweed 

 sp. 788, 843 



Russian syn. Russian Thistle 

 Western f. 100 

 Tumbling 



A ma ninth syn. Pigweed 



Mustard 165-167, 446-447, 542, 544, 



717, 733, 815 

 Pigweed 116, 645, 790 

 Turnip 142 



Finger and Toe Disease 677 



Flea Beetle 676 



Gall Weevil 676 



Root system 648 



Wild 



Seed 445, f. ',V< 

 Tussilago farfara 663 



Distribution 735, 736 

 hybrida, Distribution 736 

 petasites, Distribution 736 

 Tussock Grass 667 

 Twitch Grass 851 

 Tylenchus devastatrix 677 



Ulex 667 



Uloth, W. 583, 586 



Umbel 612, 871, f. 612. Hi 1 , 



Umbellifer 785 



Umbelliferae 4, 224-234, 776, 864 



Bibliography 587 



Distribution 719, 725, 734 



Seed 460-462, 561-562, 767-769 

 Umbrella Plant, Seed 533, f. 53', 

 United States, Weeds 840 

 Upham 751 



Upright Spurge syn. Spotted Spurge 

 Urban, I. 731 

 Urtica dioica 667 



1 hstribution 736 

 gracilis 69-70, 788, f. 69 



Chemical composition 70 



Distribution 715, m. 70 



Root 652 



Seed 425, 525, f. -',25, 525 

 urens 



Distribution 736 

 Urticaceae 3, 69-74 



Bibliography 587 



Distribution 715, 725 



Seed 424-425, 524-525 

 Utah Weeds 712, 728, 747, 757, 769 

 Utricle 871 



Vahl, M. 701 



Valerian Family, Distribution 725 

 Valeria naceae, Distribution 725 

 Valve 871 



Vandevelde 828, 830, 859 

 Vanilla Grass svn. Holy Grass 

 Vasev, George 371, 751, 846 

 Vegetable Oyster 497, 49 8, 729 

 Vein 871 



Veining of leaves 592 

 Netted 592 



