890 



INDEX 



Hitier, H. 849 



Hoarhoitnd syn. Horehound 



Hoarv Alyssum 147-149 



Vervain 264-266, 469, 659, 719, 789 

 Hock 707 

 Hodge 824 

 Hodson, E. R. 761 

 Hofmeister, W. 581 

 Hogenson, J. C. 849 

 Hogweed sun. Smaller Ragweed 

 Hoicus lanatus 667 

 mollis 667 



sp., Distribution 693 

 Holland Weeds 763 

 Hollvhock 213 

 Holm, Th. 584, 854 

 Holt, F. L. 861 



Holy Grass 27-28, 7N7, f. 27, 742 

 Distribution 693, 741, m. r, 

 Seed 814 

 Honey Locust 180 

 Honeysuckle, Bush 307 

 Coral 307 



Family, Distribution 724 

 Hooker, J. D. 731, 737, 740 

 Hooker's Franseria 4S5, f. 484 

 Hooper, L. J. 767 

 Hop Clover 787, f. is', 



Distribution 734, 760 

 Low 183, 184-185, f. 185 



Distribution 71 S, 745, 761, in. 185 

 Seed 451, f.' .',51 

 Hops 69, f. 60S 



Hordeum caespitosum, Distribution 

 729 

 juliatum 58-61, 788, 80S, f. 59. 60,758 

 Chemical composition 60, 61 

 Distribution 691, 715, 729, 730, 



7.", 7, 759, ni. in 

 Seed 423, 519-520, f. ',!). 505 

 murinum 677, 698, 701 

 pratense 661 



pusillum 61-63, 787, f. 62 

 Chemical composition 61, 63 

 l listribution 715, m. 62 

 Seed 424. f. y.', 

 sei a linum 701 

 Horehound, distribution 720, 728 



Seed 4 70, f. .',70. 729 

 Horse Chestnut f. 597 



Nettle 67, 247, 283-285, 637. 777. 786, 

 787, 796, 799, 823, 833, 850, f. 

 285, 688, 765 

 Distribution 720, 765-766, 844. m. 



285 

 Root 651 



Seed 471, 568, 630, f. 472, 568 

 Sorrel sun. Sheep Sorrel 

 Horseradish 168-169, 788, f. 169 



Distribution 700, 712. 717, in. 169 

 Horsetail 667, 819, f. 5. 



Distribution 736, in. 5. 

 Family 6 

 sp. 736 

 Horseweed 324-326, 657, 659, 660, 664, 

 77N, 819 

 Distribution 324, 690, 695, 736, 



737, 754, in. 326 

 Root system 645 

 Seed f. b81 

 Horton, H. E. 84 2 



Hosackia purshiana, Distribution 761 

 Hound's Tongue 256-257, 777, 787, f. 

 257 

 Distribution 719, in. 257 

 Seed 466, f. 1,66 

 Howitt, J. E. 826, 842 

 Humus Soils, Weeds of 819 

 Hundeshagen, J. G. 842 

 Hungarian Brome Grass 419, 420 



Grass 506 

 Hungary, Weeds of 754, 843 

 Hunter, Robert 801 



Hutcheson, T. B. 856 

 Hutchinson, A. 766 

 Hutton, G. 850 

 Hyacinth 66 

 Hyaline, layer 516 

 Hyams, C. W. 854 

 Hydrophyllaceae 4, 254-256 



Distribution 719 

 Hygroscopic movement in seeds 629, 



636 

 Hvoscvamus niger, Distribution 736 

 Hypericaceae 4, 221, 223-224 



Distribution 724 

 Hypericum perforatum 223-224, f. 223 



Distribution 788, 841, in. 224 

 Hvpochaeris radicata 696 



Distribution 725, 728 

 Hypoderm 516, 865 

 Hvpogvnous flowers 610, f. 605 

 Hyssop, Giant, Seed 567, f. >,70. 567 



Idaho Weeds 745, 757, 842, 844 

 Illinois weed legislation 794, 803-804 



Weeds 745, 751, 757, 765, 766 

 Immigrant weeds 743-769 

 Imperfect flowers 605 

 [ndeterminate inflorescence 610, 866 

 India Weeds 767 

 [ndia-rubber tree 69 

 Indian Currant 307, 308, 790 

 Hemp 235-237, 651, 719 

 Mallow 2 15-218. 557-558. 559, 687, 



713, 7t;2. 790, S22 

 Mustard 446 

 Plantain 493 

 fndiana weed legislation 804 



Weeds 747. 757, 766, 768, 838 

 Indians, Plants disseminated by 687 

 Indigo Plant, Distribution 734 

 Indigofera hirsuta, Distribution 7 34 

 Inflorescence 610-614, 866 

 Catkin f. 606 

 Composite 614, f. 618 

 Corymb 612, 864 

 Cyme 614, 864 

 Determinate 610, 614, 864 

 Head 612, f. 612, 618 

 Indeterminate 010, 866 

 Mixed 610 



Raceme 611, 869, f. 61& 

 Spike 611, 870 

 Umbel 612, 871, f. 613, 61!, 

 Insects and weeds 674, 676-677 

 • Integuments 619, 624, 866 

 Internode 866 



Inula helenium, Distribution 720 

 Involucre 614, 866 



as seed disseminator 631, 633 

 Iowa Homestead 284, 288, 334, 335, 

 391, 826 

 Seed investigations 834-835 

 Seed legislation S09-S14 

 Thistle 377-379, 495, 578, 789 

 Tumbleweed 116, 631 

 Weed legislation 794-801 



Proposed law 801-803 

 Weeds 840, 841, 844, 845, 851 

 Ipomoea heleracea 243-245, 789, f. 21,3 

 Distribution m. :.)'• 

 purpurea f. .."/'/. 21,5 



Distribution 696, m. 2',.', 

 Seed 463, 564, f. 1,6!,, 568 

 Ireland, Weed laws 79 



Weeds of 846 

 Tris f. 617 



Ironweed 309-310, f. 309 

 Distribution m. 310 

 Seed 477, f. 1,77 

 Western 310-311, 594, 790, f. 311 

 Distribution m. 311 

 Seed 477, f. 477 

 . sp. 807 

 Irregular flowers f. 605 

 Isle-of-man, Weed laws 793 



