72 LEGUMiNos*. ILeguminosa. 



an expanded petiole), the leaflets or simple leaves entire or very rarely toothed. 

 Flowers in axillary or terminal racemes or spikes, when terminal otten becom- 

 ing leaf-opposed by the growth of a lateral shoot, rarely solitary. 



The largest natural Order next to Composita, and widely distributed over the whole sur- 

 face of the globe. 



SuBOBDER I. Papilionacese.— (7oTO«a very irregular, the wpper petal (or standard) 



Stamens all united or the upper one alone free. 

 Leaves simple or of ^ or % leaflets. 

 Pod continuous (not articulate). 

 Leaflets digitate or solitary. 



Stamens completely united in a tube. Pod inflated . . 1. Crotalakia. 

 Upper stamen free, at least at the base. Pod flat . . . 21. Eeiosema, 

 • Leaflets pinnately arranged, the two lateral inserted below the 

 terminal one. 

 Ovary and pod 1-seeded. 



Pod very small, reniform ; the veins much curved . . 2. Medicago. 



Pod flat, reticulate 12. Lespedeza. 



Ovary and pod a-seeded 20. Khtnchosia. 



Ovary and pod with more than 2 seeds. 

 Two bracteoles under the calyx. 

 Standard shorter than the other petals (flower large) . 14. MucnNA. 



Keel spirally twisted 16. Phaseolus. 



Petals regularly papilionaceous. 



Upper calyx-lobes large, 3 lower ones very small . 15. Canatalia. 

 Lobes of the calyx nearly equal. 



Stems twining. Pod'long and linear . . . .13. Neustanthus. 

 Stems decumbent or ascending. Pods short, ob- 

 long, turgid 22. Pycnospora. 



Calyx without bracteoles at the base. 

 Pod marked with depressed transverse lines between 

 the seeds. 

 Erect undcrshrub. Standard with two callosities 17. Cajanus. 

 Stem prostrate or twining. Standard without cal- 

 losities 19. Atylosia. 



Pod without depressed transverse lines. Twiner . .18. Dtjnbaria. 

 Pod articulate. 



Leaflets 2 7. Zoenia. 



Leaflet 1. Pod scarcely flattened 8. Altsioaepi'S. 



Leaflets 3 or rarely 1. Pod very flat. 

 Pod turned back in the calyx. 



Calyx small, with subulate teeth 9. Uearia. 



Calyx enlarged after flowering, with broad teeth . . .10. Loueea. 



Pod straight 11. Desmodium. 



Leaves pinnate, ofa or more leaflets. 

 Herbs or undershrubs. 

 Pod not articulate. 



Upper stamen free. Anthers tipped by a gland or point . 3. Indiqofeea. 

 Stamens monadelphous, at least in the middle. Anthers 



obtuse 4. Tephrosia. 



Pod articulate 6. .ffiscHTNOilENE. 



Herbaceous climbers. Stamens 9. Pod 2-valved .... 23. Abrus. 

 Trees or tall woody climbers. 



Pods 2-valved. Stamens 10 , . 5. IfiLLETTlA. 



Pod indehiscent. 



Anthers small, erect, opening at the top. Flowers small, 

 cyniose 24. Dalbeema. 



