904 



INDEX 



viridis 20-22, 506, 511, 790, f. 21, 507, 

 509, 510, 665 

 Chemical composition 21-22 

 Distribution 691, 714, 729, 731, to. 



p > 

 Seed 412-413, f. il2, 511, 512, 676 

 Seton, R. S. 851 

 Settegast 828, 859 

 Severance, G. 861 

 Shamel, A. B. 857 

 Shaw, A. B. 748 

 Shaw, Thomas 371, 822, 851 

 Sheath 870 



Sheathed Rush Grass 37-38, 715, 790 

 Sheep Sorrel 80-82, 6.67, 774, 787, 819, 

 f. 81 

 Chemical composition 82 

 Distribution 696, 716, 736, to. 82 

 Root system 651 



Seed 425-426, 640, 810, 814, f. 1,26 

 Sheep's Burr 849 



Fescue 715 

 Sheldon, Parley 745 



Shepherd's Purse 151-153, 604. 659, 660, 

 665, 677, 776, 786, 819, f. 152,622 

 Disease 680, f. €81 

 Distribution 696, 708, 717, 734, 



740, m. 65S 

 Root svstem 64 8 



Seed 443, 540-541, 815, f. W, <>.', 

 688 

 Sheepweed sun. Stinkweed 

 Shimek. B. V. XI 



Shoo-flv 221-222, 796, 822. f. 222, 761 

 Distribution 688, 696, 697, 710, 



712, 713, 7 IS. 761, 762, 794 

 Seed 460, f. 1,59 

 Shoe-string 88 



Devil's 88 

 Showy Milkweed 237-238, 719, 787 

 Shrub 870 



Shrubbv Cinquefoil 842 

 Shull, C. A. 861 

 Siberian Weeds 757 

 Sicyos angulata 593, f. 591, 



Distribution 737 

 Sida, Prickly 218-219, 789, f. 218 



Distribution 7 IS, 722, 72 3, 7 34, m. 



219 

 Seed 560 

 rhombifolia, Distribution 698, 723 

 Rhomb-leaf, Distribution 69 8, 723 

 spinosa 218-219, 789, f. 218 



Distribution 718, 722, 723, 734, 740, 



m. 'in 

 Seed 5 60, f. 559 

 Side Oats 6S9 

 Silene antirrhina 7 88 

 Distribution 716 

 Ssed 534-535, f. 5S5 

 dichotoma 128-130, f. 1.0 

 Distribution 712, m. ISO 

 Seed 436, f. iS7 

 gallica, Distribution 725 

 inflata, Seed 535 

 latifolia, Distribution 716 



Seed 4 36, f. 436 

 noctiflora 130-132, 790, f. 131 

 Distribution 712, 716, m. 132 

 Seed 437, 810, f W? 

 vespertina, Seed 437, f. ',87 

 virginica, Seed 535, f. 535 

 Silesia, Weeds of 754 

 Silky Bent Grass 639, Seed f. 639 

 Cinquefoil 734 

 Sophora 551 

 Silphium perfoliatum 4 82, f. 1,88 

 Silverweed 177-178, 663, 665, 787, f. 1~7 



Distribution 742, m. 177 

 Silvery Cinquefoil syn. Silverweed 

 Orach 74 6 



Silybum marianum 701 



Distribution 725 

 Simahubaceae, Distribution 725 

 Simpson's Honev Plant 291, 294-295, 

 789, f. 295 

 Distribution m. 295 

 Sinapis arvensis syn. Brassica arvensis 

 Sinus 870 



Sirrine, Emma 525, 586 

 Sirrine, F. A. 759, 763 

 Sisal substitute 216 



Sisymbrium altissimum 165-167, f. 166, 

 7.;.; 

 Distribution 717, 734, 789, to. 167 

 Seed 4 4 6, 54 1, /. '.)?_, 5& 

 canescens, Seed 5 14 

 officinale 164-165, 664, 787, f. 16!, 

 Distribution 717, 725, 734, m. 165 

 Seed 446, 534, 544, f. W 

 Sium latifolium 



Distribution 734 

 Skeleton Weed syn. Lyyod'esmia 

 skunk-tail Grass syn. Squirrel-tail 



Grass 

 Skunkweed 708 

 Sleepy Catchfly 716, 788 

 Slender Catchfly 534-535 

 Foxtail 665 

 Rush 65, 715 



Wheat Grass 53, 57, 422, 423 

 Small, A. J. XII 

 Small Beggar-ticks 4 89, 720 



Bindweed si/n. European Bindweed 

 Peppergrass 146-147, 441-442, 540, 



541, 638, 688, 692, 717, 734 

 Ragweed sun. Smaller Ragweed 

 Red Clover 812 

 Rush Grass 38, 39, 715, 790 

 Squirrel-tail Grass 787 

 Stick-tight 489 

 Small-flowered Buttercup 787 

 Catch flv 725 



Crowfoot 139-140, 446, 536, 717 

 Dandelion syn. Red-seeded Dandelion 

 Mallow 725 

 Small-fruited False Flax 638 

 Smaller Ragweed 328-331, 482-483, 645, 



657, 658, 659, 705, 720, 789 

 Smartweed 95-97, 822, f. 2h 

 Common f. 93 

 Familv 74-99 



Seeds 425-431 

 Marsh sun. Tanweed 

 Muhlenberg's sun. Tanweed 

 Noddinc; svn. Pink Smartweed 

 Pennylvania 90-92, 594, 657, 658, 

 659, 660, 664, f. 91, 92 

 Distribution 716, in. 91 

 Root svstem 645 

 Seed 4 30. f. ',',<> 

 Pink 86, 87, 788, f. 87 



Distribution 716, 734, 742, to. 87 

 Seed 430, f. 1,30 

 Slender svn. Pink Smartweed 

 sp. 687, 691, 788, f. 661 

 Water 97, f. 96 

 Distribution 716 

 Seed 428, f. Ifi8 

 Smith, J. H. 756 

 Smith, M. G. 825 

 Smith, P. H. 833, 851, 859 

 Smith, W. G. 845 

 Smoke Tree 213 



Smooth Brome Grass syn. Hungarian 

 Brome Grass 

 Crab Grass 10-12, 408-409, 505, 714, 



789, 810 

 Dock 76-78, 427, 654, 787, 794, 796, 



799 

 Goldenrod 315-316, 480 

 Snake-bites, Antidote 778 



