INDEX 



905 



Snakeroot, White 312-313, 780, 789, f. 

 312 

 Distribution m. 313 

 Seed 477, f. 1,78 

 Snapdragon 291 



Also see Toadflax 

 Sneezeweed 354-356, 780, 790, f. 355, 3-16 

 Distribution 721, m. 355 

 Seed 490, f. 1,91 

 Narrow f. 721 

 Distribution 722 

 Snow, Seed Scattered by 629, 687 

 Snow-on-the-mountain 205, 210-211, 

 787, f. 210, 712 

 Distribution 712, 757, m. 211 

 Seed 458, f. 458 

 Snowball f. 595 



Snyder, Harry 115, 157, 165, 273 

 Soapwort syn. Bouncing Bet 

 Soft Chess 46-48, 419, 715, 733, 789 

 Grass, Creeping 665, 667 



Woolly 665 

 Maple 634 

 Soil affected by weeds 6S1-682, 860 

 Solanaceae 4, 277-291, 777 

 Bibliography 586 

 Distribution 725, 756-767 

 Seeds 471-472, 568-569 

 Solanum carolinense 283-284, 777, 787, 

 796, f. 285 

 Distribution 705, 720, 765-766, m. 



285 

 Root system 651 

 Seed 471, 568, f. ',12. 568 

 heterodoxum, Distribution 738 

 nigrum 281-283, 625, 777, 790, f. 281, 

 282 

 Distribution 696, 697, 720, 736, m. 



2S2 

 Seed 471, 569, f. 1,72, 569 

 rostratum 284, 286-288, 787, f. 286 

 Distribution 720, 722, 738, 766-767, 



844, m. 286 

 Seed 471, 569, f. 1,72, 568, 635 

 triflorum. Distribution 738 

 Solidago 



canadensis 313-314, 790, f. 311, 



Distribution 690, 721, 737, m. SU 

 Seed 479, f. 1,80 

 lanceolata, Distribution 737 

 missouriensis. Distribution 689 

 odora, Distribution 689 

 rigida 316-317,689, 790, f. 317, 633,738 

 Distribution 689, m. 317 

 Seed 480, f. 1,80 

 serotina 315-316, 790, f. 315 

 Distribution 738, m. 316 

 Seed 480, f. 1,80 

 Solitary flowers 611, f. 611 

 Solomon's Seal, Rhizome f. 6.):; 

 Somerville, Prof. 851 

 Sonchus arvensis 394-396, 663, 790, 

 808, 819, f. 395 

 Distribution 736, 753, in. 395 

 Seed 499. f. 1,99 

 asper 393-394, f. 393 



Distribution 721, 736, m. 391, 

 Seed 499, f. 1,99 

 oleraceus 391-393, 787, f. 392 

 Chemical composition 674 

 Distribution 696, 736, m. 393 

 Seed 500, f. 1,99 

 palustre, Distribution 736 

 sp. 676 

 Sophora sericea f. 551 



Silky f. 551 

 Sorauer, P. 820, 846 

 Sorghum, Seed 813 

 Sorghum halepense 7, 8, f. 7, 722 

 Distribution 722, 732, m. 7 

 Seed 408, f. W 



58 



Sorrel, Field 202-203, f. 202 



Distribution 734, 741, m. 203 

 Seed f. 6S0 

 Yellow, 201-202, f. 201 

 Distribution m. 202 

 Horse syn. Sheep Sorrel 

 Lady's 659, 787 



Distribution 696, 697, 718 

 Seed 456, f. 1,57 

 Sheep 80-82, 540, 667, 774, 787, 819, 

 f. 81 

 Chemical composition 82 

 Distribution 696, 716, 735, 736, m. 



82 

 Root 651 



Seed 425-426, 640, 810, 814, f. 1#6 

 sp. 678, 833, f. 591,. 638 

 Also see Sour Clover 

 Violet Wood 689 



Yellow-flowered syn. Field Sorrel 

 Sour Dock syn. Curled Dock 

 South America, Weeds of 696, 713, 726, 



731 732 733 734 

 Southern Nut (3-rass 63, 722, 723 

 Peppergrass 723 



Spear Grass 45-46, 416, 517, 715, 732, 

 740 

 Sow Thistle 393-394, 661, 665, 577, f. 

 393 

 Distribution 708, m. 391, 

 Seed 499, f. 1,99 

 Annual 391-393, 787, f. 392 

 Chemical composition 674 

 Distribution 725, m. 393 

 Seed 500, f. 1,99 

 Field syn. Perennial Sow Thistle 

 Perennial 394-396, 663, 793, 808, 819, 

 826. f. 395 

 Distribution 753, 842, m. 395 

 Seed 499, 814, f. 1,99 

 sp. 736 



Spiny, Seed 499, f. 1,99 

 Soybean 180 

 Spacht 768 

 Spanish Dagger 645 



Needle syn. Bootjack 

 Sparrow, E. E. 767 

 Sparrows as seed destroyers 629 

 Spear Grass, Low 664 

 Distribution 715 

 Southern 45-46, f. 1,5 



Distribution 715, 732, 740, m. 1,6 

 Seed 417, f. 1,16 

 Spearmint 2 68 



Distribution 720 

 Specific gravity of seeds 828 

 Speedwell 664 



Corn, Distribution 723 

 Purslane, 296, 297, f. 296 



Distribution 720, 723, 740, m. 297 

 Seed 473, f. 1,71, 

 Spergula arvensis, Chemical composi- 

 tion 674 

 Distribution 723 

 sp. 853 

 SPERMATOPHYTA 3, 6-404 

 Spike 611, 870 

 Spike Rush, Seed 407-408 

 Spikelet 870 



Spillman, W. J. 846, 852 

 Spinach 99, Disease 678 

 Distribution 712, 725 

 Seed 4 32, f. 1,32, 730 

 Spinacia oleracea, Distribution 725 



Seed 432, f. 1,32. 7S0 

 Spinage syn. Spinach 

 Spine 870 

 Spiny Amaranth 697. 7-':: 



Clotbur 334, 336, 485, 486, 713, 737, 



754, 821 

 Cocklrbiir syn. Spiny Clotbur 



