88 LEGUMINOS^E. (PULSE FAMILY.) 



25. DESMODIUM. Legume 2 - 6-jointed, bristly. Racemes terminal. 



TRIBE IV. PHASEOL.E.3E. Stamens monadelphous or diadelphous (9 & 1). Leg- 

 ume 2-valved, not jointed. Cotyledons thick and fleshy ; usually raised above ground 

 in germination. Chiefly twining vines. 



* Ovary 1-2-ovuled. 



26. RHYNCHOSIA. Legume oblong. Flowers yellow. Leaves trifoliolate. 



* * Ovary few or many-ovuled. 

 t- Keel spirally twisted. 



27. APIOS. Leaves pinnate, not stipellate. 



28. PHASEOLUS. Leaves trifoliolate, stipellate. 



f- *- Keel straight. Leaves trifoliolate (except one species of Galactia). 

 H- Legume terete, torulose. 



29. VIGNA. Flowers yellow. Vexillum roundish. Stems twining. 



30. ERYTHRINA. Flowers scarlet. Texillum narrow, elongated. Stems erect. 



H- -H- Legume flattened. 

 = Bracts opposite. Vexilium very large. 



31. CLITORIA. Calyx tubular, 5-toothed. Vexilium spurless at the base. 



32. CENTROSEMA. Calyx short, 5-cleft. Vexilium spurred at the base. 



= = Bracts alternate. 



33. AMPHICARP^LA. Calyx 4 - 6-toothed. Flowers of two kinds. Bracts persistent 



34. GALACTIA. Calyx 4-cleft. Bracts deciduous. Legume linear. 



35. CANAVALIA. Stamens monadelphous. Calyx bilabiate. Hilum linear. Legume three- 



ridged on the back. 



36. DOLICHOS. Stamens diadelphous (9 & 1). Calyx 5-cleft. Hilum oval. 



TRIBE V. DAI.BERGIEJE. Stamens 10, monadelphous or diadelphous. Legume 

 indehiscent. Cotyledons thick and fleshy. Trees or shrubs. 



37. PISCIDIA. Legume compressed, 4-winged. Leaves pinnate. 



TRIBE VI. SOPHORE^E. Stamens 10, separate. Legume not jointed. Erect herbs, 

 shrubs, or trees. 



* Legume dehiscent. 



38. BAPTISIA. Stamens deciduous. Legume inflated, stipitate, few-seeded. Leaves simple 



or trifoliolate. 



39. THERMOPSIS. Stamens persistent. Legume nearly sessile, flattened, many-seeded. 



Leaves trifoliolate. 



40. CLADRASTIS. Stamens persistent. Legume flat, few-seeded. Leaves pinnate. Tree. 



* * Legume indehiscent. 



41. SOPHORA. Legume moniliform. Leaves pinnate. Shrubs. 



SUBORDER IT. C^SALPINIE^S. Corolla irregular and somewhat 

 papilionaceous, or almost regular, imbricated in the bud \ the upper petal 

 interior. Stamens separate. Embryo straight. 



42. CIRCIS. Flowers perfect, somewhat papilionaceous. Calyx 5-toothed. Leaves simple. 



43. CASSIA. Flowers perfect, irregular. Calyx deeply 5-parted. Anthers dissimilar. Leaves 



pinnate. 



44. GLEDITSCHIA. Flowers polygamous, almost regular. Calyx 3 - 5-parted. Leaves pin- 



nate and bipinnate. 



SUBORDER III. MIMOSE^E. Corolla regular, hypogynous, valvate 

 in the bud. Stamens distinct or united, often very numerous, inserted with 

 the petals. Embryo straight. Leaves pinnate or 2 - 3-pmnate. Flow- 

 ers polygamous. 



