LEGUMINOSAE 223 



3. Leaflets numerous, very small; stamens united into two groups of 



6 each - 20. Aeachynomene 



3. Leaflets few, medium; stamens united in a closed tube; cultivated 



herbs, the fruit ripening under ground 21, Araehis 



2. Leaves digitately 2-foliolate ; joints of the pod muricate.... 22. Zomia 

 2. Leaves pinnately 3-foliolate or reduced to a single leaflet. 

 3. Pod exserted, equaling or exceeding the calyx. / 



4. Pod flattened „ 23. Desmodium 



4. Pod cylindric... 24. Alysicarpua 



3. Pod folded together within the calyx. 



4. Calyx not enlarged in fruit; leaflets longer than broad; flowers 



in very dense capitate racemes 25. Uraria 



4. Calyx enlarged in fruit; leaflets broader than long; flowers few 



in lax racemes 26. Lourea 



. Pods not jointed, dehiscent or indehiscen t. 

 2. Leaves pinnate, with 5 to many leaves. 

 ^ Leaves odd-pinnate. 



4. Pods dehiscing by both sutures. 



6. Herbs or undershrubs; flowers racemose. 



6. Pods cylindric or 4-angled 27. Indigofera 



6. Pods flat -- 28. Tephroaia 



5.' Trees with flat pods ; flowers racemose. 



6. Racemes terminal or from the upper axils 29. Millettia 



6. Racemes lateral 30. Glirieidia 



5. Herbaceous vine with large, showy, white or blue, axillary 



flowers 31. Clitorea 



4. Pods indehiscent. 



5. Herbs with subcapitate blue flowers and numerous small leaflets. 



32. Parosela 



5. Trees or woody vines. 

 6. Leaflets alternate. 



7. Trees with yellow flowers and orbicular winged pods. 



33. Pterocarpus 

 7. Woody vines with pink or white flowers and elongated nar- 

 row pods 34- Dalbergia 



6. Leaflets opposite. 



7. Trees with thick wingless pods 35. Pongdmia 



7. Woody vines with thin, winged P9ds 36. Derria 



i§) Leaves even-pinnate. 



"■^4, Rachis terminating in a tendril Sl.Piaum, 



4. Rachis not tendril-bearing. 



5. Slender vines with short flat pods n38. Abrua 



5. Coarse shrub-like plants with yellow flowers, or trees with very 

 large white flowers; pods very long^ subcylindric. 



39. Seabania 

 2. Leav es simple or with 3 or more digitat^y arrang;.J leaflets ; pods 



^ ' 



3. Stemens monadelphous ; pods many-seeded: 40. CrotaUtria 



3. Stamens diadelphous; pods few-seeded 41. Flemmgta 



2. Leaves pi nnately 3-foliate. ,,,,... 4. 



■q. teadets not stipellate; herbaceous or shrubby, chmbmg or erect 



4 plTdf ^indehiscent; herbs with toothed leaflets and small spiral 

 . : 42. Medicago 



