INDEX 



901 



Rafinesque, C. S. 774, 854 



Ragweed, Greater 326-327, 789, f. S27, 



sri, eoi 



Distribution 691, 720, m. S87 

 Root system 645 

 Seed 484, 574, 674, 814, f. iSS 

 Lance-leaved, Seed 483, f. 48S 

 Large syn. Greater Ragweed 

 Perennial 331-332, f. SS2 

 Distribution 689 

 Root system 651 

 Seed 484, f. iSS 

 Pollen 681 



Smaller 328-331, 657, 658, 659, 660, 

 778, 789, f. SS9, SSO 

 Distribution 698, 705, 720, 730, 740, 



m. 330 

 Root system' 645 

 Seed 482-483, f. iSS, 557 

 sp. 625, 793, 807, 822 

 Western syn. Perennial Ragweed 

 Ragwort 665, 667, 678, 743, 750 

 Ranunculacbab 4, 139-14S 

 Bibliography 586 

 Distribution 717, 724 

 Seed 438-440, 536 

 Ranunculus abortlvus 139-140, 787, f. 

 1S9 

 Distribution 717, m. 1^0 

 Seed 440, 536, f. l/lfi, 536 

 acris. Distribution 717 



Seed 440, f. Vfl 

 arvensis 663 



Distribution 736 

 bulbous. Distribution 717 

 oymbalaria, Distribution 742 

 flammula. Distribution 736 

 multifidus. Embryo f. 6B1 

 pennsylvanicus. Distribution 742 

 repens. Distribution 742 

 septentrionalis 140-141, 787, f. HI 

 Distribution 717, 736, m. HI 

 Rape 142 



Seed 445, 810, 811, 813, f. J,lfi 

 Broom 665, 735, 827 

 Raphanus raphanistrum 153-155, 665, 

 f. IH 

 Chemical composition 674 

 Distribution 696, 699, 717, 735, 736, 

 m. i55 

 satlvus 788 



Distribution 725 

 Seed 444, f, Ui 

 Raphe 869 

 Raspberry 175, 703 



Black 632 

 Rat-tail Plantain 638 

 Rattle, Yellow 667 



Distribution 742 

 Rattle-box (.Astragalus) 193-194, f. M 

 Rattle-box (.Crotalaria) 182-183, 788, 

 f. 182 

 Distribution 718, m. 183 

 Seed 450, 545-546, f. m, SiS 

 Rattlesnake Root, Seed 501, f. 501 



"Weed 703 

 Ratzeburg, J. T. C. 754, 767, 826, 845 

 Rawson, W. B. 851 

 Raymond, L. H. 749 

 Receptacle 869 



as seed disseminator 631 

 Red Bud 180 



Campion 605, 716 

 Cedar 6 

 Cherry 694 



Clover 78, 130, 149, 175, 360, 451, 

 674, 692, 698, 705, 712, 726, 810, 

 811, 812, 828, 830, 831, 832, 833, 

 835, 836, 855, 856, 857, 858, 859, 

 860 

 Mammoth 811, 812 

 Medium 811, 830 



Small 812 



Top 415, 680, 715. 805, 806, 810 

 Red River Valley Weeds 751 

 Redroot 113-115, f. 116 



Chemical composition 115 

 Distribution m. US 

 Red-seeded Dandelion 390-391, 498, 



631, 721 

 Red-shank syn. Lady's Thumb 

 Red-veined Dock syn. Bitter Dock 

 Reed Grass, Distribution 733, 736 

 Reed Bent. Grass 693, 736 

 Reed-mace Fungus 677 

 Rees, Bertha 829 

 Register and Leader 80S 

 Rehnstron, B. 750 

 Reinbott, C. 746 

 Reppert, P. 745, 749, 760, 763 

 Reseda lutea. Distribution 717 

 Rbsbdaceab, Distribution 717, 724 

 Respiration 600, 869 

 Rest-harrow 607 

 Reum, J. A. 845 

 Reynold, A. P. 749 

 Rham;naceab, Distribution 724 

 Rhinanthus crista-aralli major. Distri- 

 bution 736, 742 



orista-galli minor, Distribution. 736 

 Rhlzoctinia violacea 677 

 Rhizome 649, 650, 651, 869, f. 6^3, 651, 



65a 

 Rhode Island Weeds 766 

 Rhodin, S. 851 

 Rhomb-leaf Sida 723 

 Rhus' glabra 841 



toxicodendron 213, 214, 787, f. m,S15 

 Root system 652 

 Rib 869 



Rib Grass syn. Buckhorn 

 Ribbon Grass 8 

 Ribwort 665 

 Rice Cut Grass f. 739 

 Distribution 740 

 Rice weeds 840, 847 



Wild, Seed 856 

 Richardia soabra. Distribution 723 

 Richman, Mrs. 766 

 Ricinus communis. Distribution 696, 



697, f. 691 

 Ridley, H. N. 859 



Road funds, How applied in Iowa 800 

 Roberts, B. D. 762 

 Roberts, H. F. 831, 859 

 Robinia pseudo-acacia. Distribution 



718 

 Rocket 159, 160, f. 159 

 Distribution m. 160 



Yellow 787 

 Robinson, B. L. 731, 754, 767, 768 

 Rocky Mountain Bee-plant 173-175, 448 



Sand bur 794 



Weeds 729 

 Rolfs, P. H. 557, 586, 745, 748, 751, 



755, 756, 859 

 Rollins, J. 766 

 Romer, F. 845 

 Rommatin 852 

 Root 869 



Aerial 645 



Annual 647, 649 

 Winter 647, 657 



Biennial 648, 649, 650 



Central 644 



Classification 647, 649 



Fibrous 645, 650, f. 6.1,9 



Fleshy 648, 650 



Forms 644-650 



Functions 644, 645 



Lateral 644 



Parasitic 645 



Perennial 648-649, 650 



Primary 644, 650 

 Multiple 644 



