2 XLVII. § PAPILIONACE-E (BAKER). 



Calyx deeply five-cleft. 

 Style straight. 



Pod lanceolate, inflated 2. Rothia. 



Pod linear, compressed 5. Argyroix>bium. 



Style abruptly bent near the base 3. Crotalaria. 



Tube of stamens not slit along the top. 

 Calyx-teeth much exceeding the tube. 



Wings connate at the apex ; keel rostrate 4. Lupinus. 



Wings free ; keel obtuse . . . >. . . 5. Argyroix>bium. 



Calyx-teeth shorter than the tube 6. Adenocarpus. 



Tribe 2. Trifoliese. — Stamens 10, diadelphous (monadelphous in Ononis); anthers 

 uniform (except in Ononis). Pod two-valved, not articulated. Erect often annual 

 herhs, with three sessile or stalked toothed leaflets. 



Stamens monadelphous ; anthers dimorphous 1. Ononis 



Stamens diadelphous ; anthers uniform. 

 Petals quite free from the staminal column. 



Pod usually linear, many-seeded (rarely oblong, few- 

 seeded). 



Pod linear, straight 8. Parochetus. 



Pod linear, falcate, rarely oblong, straight .... 9. Trigonella. 

 Pod linear, falcate or usually spirally twisted . . . .10. Medicago. 



Pod roundish, 1-2-seeded 11. Melilotus. 



Petals adnate to the staminal tube 12. Trifolium. 



Tribe 3. Iiotese. — Stamens monadelphous or diadelphous ; anthers uniform. Pod 

 two-valved (exceptionally indehiscent) , not articulated. Erect herbs or undershrubs, 

 with imparipinnale leaves and entire leaflets. 



Stamens monadelphous ; pod indehiscent. 



Pod ovoid, straight, included 13. Anthtllis. 



Pod linear, falcate, exserted 14. Helminthocarpum. 



Stamens diadelphous ; pod two-valved 15. Lotus. 



Tribe 4. Galegese. — Stamens monadelphous or diadelphous ; anthers usually 

 uniform. Pod two-valved (exceptionally indehiscent), not articulated. Erect, rarely 

 climbing herbs, shrubs or trees, with imparipinnate or exceptionally simple entire 

 leaves. 

 Anthers apiculate. 



Calyx-teeth long ; hairs fixed by the centre. 



Stamens monadelphous 17. Cyamopsis. 



Stamens diadelphous 18. Indigofera. 



Calyx teeth very short ; hairs basifixed 21. Mundulea. 



Anthers blunt. 

 Pod indehiscent. 



Pod one-seeded ; leaves gland-dotted 16. Psoralea. 



Pod many-seeded ; leaves not gland-dotted. 



Pod membranous, inflated, entire 26. Colutea. 



Pod compressed ; sutures toothed 27. Biserrdla. 



Pod subligneous, ultimately dehiscing. 



Calyx-teeth obsolete or very short 22. Milletia. 



Calyx bilabiate, the upper lip very large .23. Platysepaldm. 



Pod flat, membranous, subindehiscent. 



Upper stamen free at base only 19. Sylitra. 



Tipper stamen free throughout . .27. Lessertia. 



Pod herbaceous or membranous, soon dehiscing. 



Flowers in leaf-opposed and terminal racemes . . . .20. Tephrosia. 

 Flowers in axillary racemes. 

 Calyx-teeth lanceolate. 

 Leaves simple 24. Microcharis. 



