214 FLORA OF TEXAS. 



* Ovary 1-2-ovuled. 



Legume oblong. Flowers yellow. Leaves trifoliate Rhtncosia. 



** Ovary few or many ovuled. 

 + Keel spirally twisted. 



Leaves pinnate, not stipellate..." Apios. 



trifoliolate, stipellate Phaseolus. 



tt Keel straight. Leaves tri/oliolate, 

 tt Legrcme terete, tortulose. 



Flowers yellow. Vexillum roundish. Stem twining Vigna. 



scarlet. narrow, elongated. Stem erect . Ebythrina. 



tt tt Legume flattened. 



= Brads q^jposite. Vexillum xery large. 



Calyx tubular, 5-toothcd. Vexillum spurless at the base Clttoria. 



short, 5-cleft. spurred at the base Centboseka. 



= = Bracts alternate. 



Calyx 4-5-toothed. Flowers of two kinds. Bracts persistent AMPHicABPiEA. 



4-cleft. Bracts deciduous. Legume iinear Gaxactia. 



bilabiate. Stamens monadelphous. Hilum linear. Legume 3-ridged on 



the back Canavalia. 



5-cleft. Stamens diadelphous. Hilum oval Dolichos. 



Tribe V. Dalbergieae. Stamens 10, monadelphous or 

 diadelphous. Legume indehiscent. Cotyledons thick and 

 fleshy. Trees or shrubs. 



Legume compressed, 4-winged. Ltaves pinnate Piscidia. 



Tribe VI. Sophoreae. Stamens 10, separate. Le- 

 gume not jointed. Erect herbs, shrubs, or trees. 



Legume dehiscent. 



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

 tri foliate B aptisia. 



persistent. Legume nearly sessile, flattened, many-seeded. Leaves 



trifoliate Thermopsis. 



persistent. Legume flat, few-seeded. Leaves pinnate. Free. 



Cladastris. 



** Legume indehiscent. 

 Legnme moniliform. Leaves pinnate. Shrubs Sophora. 



