71 



18. Ovary and pod one-seeded 

 Ovary and pod two- or more- seeded 



19. Pod very small, reniform 

 Pod flat reticulate 



20. Ovary 2-ovuled ... 

 Ovary 3- or more-ovuled 



21. Keel spirally twisted 

 Keel straight or curved ... 



22. Calyx truncate 

 Calyx dentate 



23. Keel much exceeding the other 



petals ... 

 Petals equal or keel shorter 



24. Pod inflated 



Pod not inflated ... 



25. Leaves digitately trifoliate 

 Leaves pinnately trifoliate 



26. Keel beaked 

 Keel obtuse 



27. Erect or decumbent non-scandent 



plant ... 

 Climbing plant 



28. Hairs attached by centre... 

 Hairs normal 



29. Flowers few, axillary 



Flowers in crowded racemes or 

 heads ... 



30. Weak straggling plant ... 

 Erect herb 



31. Flowers clustered along raceme or 



axillary 

 Flowers scattered along raceme... 



32. Plant subglabrous or shortly 



pubescent 

 Plant coarsely hairy 



33. Leaflets large, acute or bluntly 



acuminate 

 Leaflets small, retuse 



34. Upper lip of calyx very large . . . 

 Calyx nearly regular 



35. Terminal leaflet sharply 3- or 



more-lobed 

 Leaflets entire 



36. Pods string-like, pendent 



Pods stiff 



37. Pods sharply constricted between 



seeds 



Pods even... 



38. Leaves eglandular 



Leaves with resinous glands 



39. Constricted lines of pod oblique... 

 Constricted lines of pod transverse 



19. 



20. 

 2. Medicago (p. 74). 

 21. Lespedeza (p. 81). 

 41. Rhynchosia (p. 85). 



21. 



22, 



23. 



29. Apios (p. 83). 



34. PhaseoLus (p. 84). 



30. Mucuna (p. 83). 



24. 



25. 



27. 



26. 

 17. Pycnospora (p. 80). 



1. Crotalaria (p. 73). 

 43. Flemingia (p. 85). 



28. 



31. 

 Indigofera (p. 75). 



29. 

 Glycine (p. 82). 



27. 



30. 



Medicago (p. 74). 

 Melilotus (p. 75). 



37. 

 32. 



33. 



32. Pueraria (p. 83). 



34. 

 31. Galactia (p. 83). 



33. Canavalia (p. 83). 



35. 



35. Pachyrhizus (p. 84). 



36. 

 34. 

 37. 



Vigna (p. 84). 

 Dolichos (p. 84). 



39. 



38. 

 27. Glycine (p. 82). 

 39. Dunbaria (p. 85). 

 38. Cajanus (p. 84). 



39a. 



