892 



INDEX 



Thumb 93-95, 664, 665, 736, 788, f. 94 

 Chemical composition 67 7 

 Distribution 691, 716, to. 95 

 Seed 430, 527, f. 430, 526 

 Lambert 740 



Lamb's Quarters 107-109, 594, 658, 659, 

 660, 676, 697, 788, f. 108, 695 

 Chemical composition 107, 109 

 Distribution 687, 691, 696, 716, 



725, 729, to. 109 

 Seed 432, 5 32, f. 432, 533, 638, 616 



Western, Seed f. ■','■' 

 Lamella 866 

 Lamina 866 

 Lamium album, distribution 727 



amplexicaule, distribution 719, 723, 

 727 



sp. 7 36 

 Lamson-Scribner, F. 842 

 Lance-leaved Ragweed 483 



Salvia 277, 278, 279, 759 

 Langethal, C. E. 842 

 Lappa syn. Arctium 

 Lappa officinalis syn. Arctium lappa 

 Lappula echinata 260-262, f. 261 

 Distribution 719, m. 868 

 Seed 466, 565-566, f. 467, 566 



virginiana 259-260, 788, f. 259 

 Seed 466, f. iff! 

 Large Peppergrass 143, 144-145, 442, 

 539-540, 542, 717. 738, 787 



Ragweed sun. Greater Ragweed 



Spotted Spurge 660, 718 

 Large-bracted Vervain syn. Prostrate 



\'i rvavn 

 Larger Knotweed syn. Erect Knotweed 



Mouse-ear Chickweed 124 

 Larkspur, Field, Seed 439, f. 439 



Prairie 14 2. f. i): 

 Seed 439, f. i39 

 Larsen, O. H. 849 

 Laschke, W. 858 



Late Goldenrod sun. Smooth Goldenrod 

 Lathvrus aphara f. 593 



rt, R. 698, 849 

 Laurus canariensis, Distribution 693 

 Lavialle, P. 582 

 Lazenbv, W. R. 843, 857 

 Leaf, Alternate 594, f. 593 



Arrangement 592-594 



Arrow-shaped f. 594 



Branching 594-597 



Cauline 592 



Cleft 596, f. 595 



Compound 596 



Crenate 596, f. 596 



Dentate 595, f. 595 



Entire 594 



Function 599-601 



Kirtney-shaped f. 594 



Lobed 596, f. 58!,, 594 



Morphology 591-598 



Ketted-veined 592 



Opposite 593, f. 593 



Ovate f. 595 



Parallel-veined 592 



Parts 591-592, f. 593 



Pinnate f. 596 



Pinnatifid 596, f. 595 



Primary 591 



Protection 602-603 



Radical 592 



Reniform f. 594 



Secondary 591 



Sessile 592. f. 592 



Serrate 596, f. 595 



Serrulate 596, f. 595 



Spear-shaped f. 59! t 



Spiny-pointed f. 595 



Toothed 595 



Transpiration 601-602 



Triangular f. 594 



Veining 592 

 Wavy 594, f. 595 

 Lee, L. V. 750 

 Leek 66 

 Leersia oryzoides f. 139 



Distribution 740 

 Lees, J. H. XII, 755 

 Legislation, Weed 794-808 

 Leguminosae 4, 180-199, 776, 819 

 Bibliography 585-586 

 Distribution 718, 724, 759-761 

 Seed 450-455, 545-554, f. 551 

 Leguminous weeds 667, 785 

 Lehmann, E. 713, 737, 858 

 Leonard, J. 766 



Leontodon autumnalis, Distribution 736 

 Leonurus cardiaca 276-277, 777, 788, 

 f. 876 

 Distribution 720, to. 277 

 Seed 470, f. 471 

 Lepachvs pinnata 486-487, f. 487 



Distribution 737 

 Lepidium apetalum 146-147, 787, f. 146 

 Distribution 692, 717, 734, 741, to. 



W 

 Seed 441, 540, f. 4-',2, 541, 688 

 Sativum 441, f. 441 

 sp. f. 598 

 virginicum 144-145, 787, f. V,5 



Distribution 717, 738, 844, m. V,r, 

 Seed 442, 539-540, f. -}i-\ 5*8 

 Leptochloa mucronata, Distribution 



723 

 Leptome f. 598 

 Losage, P. 829 



Lespedeza capitata, Seed 545, 552, f. 454 

 sp. S30 

 stuvei 552 

 Lettuce 307, 633 



Blue 402-403, 788, f. 403. 633 



Distribution 729, m. h<>\ 

 Canadian sun. Wild Lettuce 

 False, Seed 500, f. 500 

 Prickly 396-399, 596, 645, 664, 790, 

 819, 826, 838, 840, f. 398 

 Distribution 721, 725, 747, 758, 



840, to. 398 

 Root system 645 

 Seed 500-501, f. 501 

 Prickly (integrata) 396-399, f. 397 

 Distribution 721, 747, to. 398 

 Seed 500, f. 501 

 Wild 399-401, 780, 788, 807, f. 400, 

 401. 595 

 Distribution 838, 810, 846, to. 398 

 Root system 6 4 5 

 Seed 500, f. 501 

 Leunis, Johannes 754 

 Liatris gracilis 47 S 



punctata, Seed 478, f. 479 

 Trichomes f. 479 

 Light, Effect on germination 829 

 Ligule 867 

 Liliaceae 3, 66-67 



Distribution 715, 724 

 Lilicova 693 

 Lily 6, 66 

 Easter f. 698 

 Family 66-67 



Distribution 724 

 of-the-valley 66 

 Philadelphia 689 

 Lilium philadelphicum 689 

 Limy Soils, Weeds of 819 

 Linaceae, Distribution 724 



Seed 456, 554-555 

 Linaria cvmbalaria, Distribution 727 

 vulgaris 292-294, 808, f. 293 



Distribution 696, 712, 720, 727, 



788, to. 294 

 Seed 473, f. 473 

 Linnaeus, see Linne 

 Linne, C. V. 744, 748, 826 



