INDEX 



Thlaspl arvense 143-144, 788, f. m 

 Distribution 700, 717, m. lU 

 Seed 441, f. W 

 Thome XII 

 Thompson, J. 749 

 Thom-apple 288, 289-291, f. »0 

 Distribution 290 

 Purple syn. Jimaon Weed 

 Thomber, J. J. 834, 859 

 Thome, C. B. 846 

 Thornton, R. W. 846 

 Three-flowered Nightshade 



Distribution 738 

 Three-seeded Mercury 205-207, 457, 



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 

 Tlckseed 852-354, f. S5S 

 Distribution m. SS/, 

 Tilla amerlcana. See f. 6SB 

 Tillman, O. I. 832, 860 

 Timothy 805, 806 



Distribution 715, 785 



Meadows, weeds of 144, 147, 322, 



660, 845 

 Seed 415, 517, 674, 810, 813, 

 827, 828, 832, 833. f. ilS, 6S8, 676 

 Impurities 144, 165, 674, 857 

 Tissue, Spongy 598 

 Titus, "W. N. 768 



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

 f 29S 

 Distribution 688, 696, 708, 720, 



m. 29i 

 Seed 473, 814, f. 1,73 

 Tobacco 277 

 Flowering 277 

 Smooth 696 

 Tolf, R. 846 

 Tomato 6, 277 

 Tomentum 871 

 Tomson 753 

 Torrey, John 753, 754, 766, 759, 760, 



761, 762, 767, 768 

 Touch-me-not 630 

 Toumey, J. W. 861 

 Tourlet, E. H. 738, 846 

 Tovey, J. R. 840 

 Tracy, S. M. 766 



Tragopogon porrifollus. Seed 497, f. //9S 

 Distribution 696, 729 

 pratensis f. J/QS 



Distribution 729, 755 

 Seed 497, f. i98 

 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. JiSS, 6S8 

 Trlboulet 852 

 Trlbulus terrestrls 203-205, 789, f. WI, 



Distribution 697, m. W5 

 Trlchome 871 



Trlfollum agrarlum 183-184, f. W, 

 Distribution 734. 760 

 arvense, Distribution 718, 760 

 hybrldum. Seed 450, 812, f. J,S1 

 Incarnatum, Seed 812 

 pratense. Seed 451, 811. 812, f. iSl 

 pratense var.. Seed 811, 812 

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

 Distribution 718, 760, m. 185 

 Seed 451, f. tSl 



repens, Distribution 7lS 

 Seed 450, 813, f. 451 

 Trlglochln maritlma 820 

 Trlstegis glutinosa. Distribution 693 

 Trltlcum (Wheat) 

 Seed 813 



(Quack Grass) 774 

 Trdnmer 861 

 Trubenbach, P. 852 

 True, R. H. 855 

 Tschlrch, A. 538, 553 

 Tube cell 516 

 Tuber 871 



Tubular flowers f. 611 

 Tumbleweed 113-116, f. 116 



Distribution 690, 698, 738, m. 116 

 Root system 645 

 Seed 434, 834, f. m, 6S1 

 Iowa syn. Tumbleweed 

 sp. 788, 843 



Russian syn. Russian Thistle 

 Western f. 100 

 Tumbling 



Amaranth 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. US 

 Tussilago farfara 663 



Distribution 735, 736 

 hybrida. Distribution 736 

 petasltes. Distribution 736 

 Tussock Grass 667 

 Twitch Grass 851 

 Tylenchus devastatrix 677 



Ulex 667 



Uloth, W. 583, 586 



Umbel 612, 871, f. 612, 6U 



Umbelllfer 785 



Umbellipebae 4, 224-234, 776, 864 



Bibliography 587 



Distribution 719, 725, 734 



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

 Umbrella Plant, Seed 533, f. 5Si 

 United States, Weeds 840 

 Upham 751 



Upright Spurge syn. Spotted Spurge 

 Urban, I. 731 

 Urtlca dloica 667 



Distribution 736 

 gracilis 69-70, 788, f. 69 



Chemical composition 70 



Distribution 715, m. 79 



Root 652 



Seed 425, 525, f. iS5, 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 NACEAEj Distribution 725 

 Valve 871 



Vandevelde 828, 830, 859 

 Vanilla Grass sun. Holy Grass 

 Vasey. George 371, 751, 846 

 Vegetable Oyster 497, 498, 729 

 Vein 871 



Velnlng of leaves 592 

 Netted 592 



