88 LEGUMINOS#. (PULSE FAMILY.) 
25. DESMODIUM. Legume 2 -6-jointed, bristly. Racemes terminal. 
TREBE IV. PHASEOLEZJE. 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. 
+ Keel spirally twisted. 
97. APIOS. Leaves pinnate, not stipellate. 
28. PHASEOLUS. Leaves trifoliolate, stipellate. 
+ + Keelstraight. Leaves trifoliolate (except one species of Galactia). 
++ Legume terete, torulose. 
29. VIGNA. Flowers yellow. Vexillum roundish. Stems twining. 
30. ERYTHRINA. Flowers scarlet. Vexillum narrow, elongated. Stems erect. 
++ ++ Legume flattened. 
== Bracts opposite. Vexillum very large. 
81: CLITORIA. Calyx tubular, 5-toothed. Vexillum spurless at the base. 
32. CENTROSEMA. Calyx short, 5-cleft. Vexillum spurred at the base. 
= = Bracts alternate. 
83. AMPHICARP/EA. Calyx 4 - 5-toothed. Flowers of two kinds. Monet persistent. 
34. GALACTIA. Calyx 4-cleft. Bracts deciduous. Legume linear. 
85. CANAVALIA, Stamens monadelphous. Calyx bilabiate. Hilum linear. Legume three- 
ridged on the back. 
86. DOLICHOS. Stamens diadelphous (9 & 1). Calyx 5-cleft. Hilum oval. 
Tre V. DALHBERGIEZE. Stamens 10, monadelphous or diadelphous. Legume 
indehiscent. Cotyledons thick and fleshy. — Trees or shrubs. 
87. PISCIDIA. Legume compressed, 4-winged. Leaves pinnate. 
Tusz VI. SOPHOREJE. Stamens 10, separate. Legume not jointed. — Erect herbs, 
shrubs, or trees, 
* Legume dehiscent. 
38. BAPTISIA. Stamens deciduous. Legume inflated, stipitate, few-seeded. Leaves simple 
39. THERMOPSIS. Stamens persistent. Legume nearly sessile, flattened, Ehi 
Leaves trifoliolate. 
40. CLADRASTIS. Stamens persistent. Legume flat, few-seeded. Leaves pinnate. Tree. 
+ Legume indehiscent. 
Al. SOPHORA. Legume moniliform. Leaves pinnate. Shrubs. 
SUBORDER Il. CZESALPINIEJE. 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. co Al ta MM aca Calyx deeply 6-parted. Anthers dissimilar. Leaves 
s. GLEDLTSCETA. Flowers polygamous, almost regular. Calyx 3- 5-parted. ntn 
Sono 1. MIMOSER. Corolla nee hypogynous, valvate 
in the bud. Stamens distinct or united, often very numerous, inserted with | 
SS yo straight. — Leaves pinnate or 2—3-pimnate. Flow- 
