246 IVAN V. SHUNK 



Smith, R. G. 1900 The nodule organism of the Leguminosae. Centralb. f. 

 Bakt.,2Abt., 6, 371-372. 



Wilson, J. K. 1917 Physiological studies of Bacillus radicicola of soy bean 

 (Soja max. , Piper) and of factors influencing nodule production. Cor- 

 nell Agr. Exp. Sta. Bui. 386. 



ZiPFEL, H. 1912 Beitrage zur Morphologic und Biologie der Knollchenbakter- 

 ien der Leguminosen. Centralb. f. Bakt., 2 Abt., 32, 109-110. 



PLATE 1 



Fig. 1. Phaseolus vulgaris (common bean) 



Fig. 2. Cracca virginiana (wild sweet pea) 



Fig. 3. Vicia villosa (hairy vetch) 



Fig. 4. Vicia caroliniana (Carolina vetch) 



Fig. 5. Cajssia nictitans (sensitive pea) 



Fig. 6. Trifolium hybridum (alsike clover) 



Fig. 7. Meibomia viridiflora (velvet-leaved Tick Trefoil) 



Fig. 8. Trifolium dubium (least hop clover) 



Fig. 9. Albizzia julibrissin (silk tree) 



Fig. 10. Robinia pseudo acacia (locust tree) 



Fig. 11. Stylosanthes biflora (pencil flower) 



Fig. 12. Medicago saliva (alfalfa) 



Fig. 13. Vicia saliva (common vetch) 



Fig. 14. Pisum sativum (garden pea) 



Fig. 15. Trifolium repens (white clover) 



Fig. 16. Meliloius alba (white sweet clover) 



Fig. 17. Trifolium arvense (rabbit-foot clover) 



Fig. 18. Baptisia tinctoria (wild indigo) 



Fig. 19. Vicia alba (vetch) 



Fig. 20. Cracca spicata (loose flowered Goat's Rue) 



Fig. 21. Vicia hirsuta (tineweed or vetch) 



Fig. 22. Arachis hypogoea (peanut) 



Fig. 23. Medicago arabica (bur-clover) 



Fig. 24. Pueraria ihunbergiana (kudzu vine) 



Fig. 25. Vicia dasycarpa (vetch) 



Fig. 26. Falcata comosa (hog peanut) 



Fig. 27. Trifolium procumbens (low hop clover) 



Fig. 28. Trifolium incarnatum (crimson clover) 



Fig. 29. Lathyrus odoratus (sweet pea) 



Fig. 30. Clitoria mariana (butterfly pea) 



Fig. 31. Vicia angustifolia (smaller common vetch) 



Fig. 32. Trifolium pratense (red clover) 



Fig. 33. Meibomia laevigata (smooth tick trefoil) 



Fig. 34. Meibomia paniculata (panicled tick trefoil) 



Fig. 35. Dolicholus erectus (erect rhynchosia) 



Fig. 36. Phaseolus lunatus (lima bean) 



Fig. 37. Soja max (soy bean) 



Fig. 38. Meibomia obtusa (hairy tick trefoil) 



Fig. 39. Vigna sinensis (cow pea) 



Fig. 40. Stizolobium deeringianum (velvet bean) 



Fig. 41. Lespedeza striata (Japan clover) 



All drawings were made to the same scale and with the aid of a camera lucida. 



