884 



INDEX 



Smooth 76-78, 787; 794, 796, 799, 

 f. 77, 78 

 Root system 654 

 Distribution m. 77 

 Seed 427, f. 101 

 Sour ayn. Curled Dock 

 sp. 592, 630, 649, 660, 665, 667, 676, 

 678, 687, 734, 773, 774 

 Seed 832 

 Tall. See Curled Dock 

 Yellow. See Curled Dock 

 Dodder 645, 665, 688, 838, 839, 850, 

 852 

 Alfalfa 252 

 Seed 810 

 Chilean 



Seed 465, 828, 836, f. 1,65 

 Clover 250-252, f. mi, 253 



Distribution 719, 725, 729, in. 151 

 Seed 465, 564, 810, 828, 835, f. 

 1,BS, 563, 638, 726 

 Lesser f. 253 

 Field 252-254, f. 253 



Distribution 719, 729, m. 254 

 Seed 464, 810, f. m 

 Plax f. 253 

 Perennial 843 

 sp. 645, 692 



Seed 640, 814, 833, 834, 856, 857 

 Thyme f. 253 

 Dodson, W. R. 840 

 Dog Grass 774 

 Dog Fennel sjin. Mayweed 

 Dogbane Family 234-237 • 



Distribution 723 

 Spreading 235, 237 



Distribution 719, m. 235 

 Dooryard Knotgrass syn. Knotweed 

 Knotweed 84-85, 428, 659, 716, 736, 



742 

 Plantain syn. Common Plantain 

 Dooryard weeds t. 25 

 Dormant period 786 

 Dorph-Petersen, K. 828, 856 

 Doryphora decemlineata 677 

 Downy Brorae Grass 50-52, 420, 714, 



715, 728, 819 

 Dragon Root f. 598 

 Drains clogged by weeds 682 

 Dropseed Grass 785, 790, 850 

 Seed 834, f. 676 

 Mexican 32-34, 660, f. 33 

 Chemical composition 34-35 

 Distribution 715, m. 33 

 Seed 413-414, f. 1,11, 

 Drug plants 853 



Preparing for market 780-781 

 Raising 773, 780-781, 854, 855 

 Drugs, Root 853 

 Drysdale, J. 851 

 Duggar, J. F. 853 

 Duncan, J. H. 768 

 Duvel, J. W. T. 835, 856 

 Dyer's Green 'Weed 667 



Distribution 718 

 Dyssodia chrysanthem,oides syn. of 

 papposa 356-358, 789. t. S57. 3.58 



Distribution 705, 720, 755, m. 357 

 Seed 490-491, f. 1,91 

 Trichomes f. Ifil 



Earnshaw, G. T. 851 



Eaton, A. J. 848 



Echinochloa crusgalll 16-17, 790, t. 16 

 Chemical composition 17 

 Distribution 714, 731, m. 16 

 Seed 411-412, 506. f. 1,11, 505, 729 



Echlnocystis lobata, Seed f. 571, 



Echinosperimim laippula syn. Lappula 

 echinata 



Echium vulgare 468, f. i6S 

 Distribution 719 



Eclipta alba. Distribution 756 

 Economic plants 853 

 Bdson, H. A. 848 

 , Edwards, A. H. 763 

 Eelworm, Stem. 677 

 Egg, 620, f. 621 

 Egg-case 617 

 Eggert, Henry 747, 766 

 Bhinger, G. E. 756 

 Ehrhart, F. 840 



Eichomia crassipes. Distribution 712 

 Blatinaceab 



Distribution 724 

 Eleagnus f. 60i 

 Elder, Marsh 332-334, f. 333, 752 



Distribution 720, 729, 751-753, m. 



S33 

 Seed 482, 814 

 Elecampane 



Distribution 709, 720 

 Eleooharls palustrls. Seed 407-408, f. 



Jfif} 

 Eleuslne indlca 41-43, 788, f. m 

 Chemical composition 43 

 Distribution 696, 698, 715, 733 

 Seed 416, f. m 

 Elliott, W. B. 763, 767 

 Elkweed 



Distribution 694, 840 

 Ellisia, Common 255-256, t. 255 

 nyctelea 255-256, f. 255 

 Distribution 719, m. 256 

 Elm 69 



Distribution 695 

 Elodea canadensis 



Distribution 740 

 Embryo 621-623, 624, 864, f. 622 



Sac 620, f. 620. 621 

 Endive, Wild 793 

 Endosperm 865 

 England, "Weeds of 763 

 English Charlock 155-157, 444, 542, 

 543, 701, 717, 735 

 Plantain syn. Buckhorn 

 Rye Grass syn. Perennial Bye Grass 

 Envelopes, Floral 609, f. 609 

 Epicarp 865 

 Epichloe typhina 677 

 Epiderm 865 



Epidermal cell. See Cell, Epidermal 

 Epidermis 597, f. 598 

 Epigaea, sp. 702 

 Epigynous flowers 610, f. 611 

 Epilobium angustifolium 



Distribution 693, 694, 726, 741 

 hirsutum 



Seed 829 

 roseum 



Seed 829 

 sp. 703 

 spicatum 



Distribution 840 

 Equisbtaceae 3, 6 

 Equisetum arven.=ie 5, 6, f. 5, 6 

 Distribution 736, m. 5 

 palustre 849 



Distribution 736 

 Eradication of weeds 846-853 



Also see species 

 Eragrostis pilosa 45-46, 789, f. 1,5 

 Distribution 715, 732, m. ),6 

 Seed 417, 740, f. J,16 

 Pilose syn. Spear Grass 

 Erechtites hieracitolia 368-369, 778, 

 789. f. 369 

 Distribution 695, 721, m. 369 

 Seed 492, f. m 

 sp. 703 

 Erect Knotweed 82, 83, 429, .';26, 696, 



716, 725, 789 

 Ergot 680, 814, 815, f. 639 

 Rye 678 



