POLYPETALOUS EXOGENOUS PLANTS. ^^13 



tt HerbB. 



Calyx 5-clcft. Vexillum large. Legume compre?5ed, many-seeded. Leaves un- 

 eqiijilly pinnate Tepuroma. 



C;ilyx 5-cIefi. Vexilliiin pmall. Legume terete or angled, S-inauy-seedcd. Le.tvc!* 

 unequally pinnate Indigofera. 



Calyx tniiicate. Legume oblong, 2-seeded. Leaves abruptly pinnate. 



Glottidiu.m. 



Calyx 5-tootlied. Legume very long and slender, many-seeded. Leaves* at)niptly 

 pinnule Sesbania. 



***** Stamens diadelphous. Legume i-celled lengthwise, or \-celled with one of the 

 sutures turned inward. Leaves pinnate. 



Stamens 10, diadelphous. Legume tumid Astkagalus. 



Tribe II. Viciese. Stamens diadelphous, 9 and 1. 

 Legume 2-valved, not jointed. Cotyledons thick and fleshy, 

 remaining underground in germination. Climbing vines; 

 the petioles of the pinnate leaves ending in tendrils. 



Style filiform, bearded at the apex, or on the side "f the keel Vicia. 



flattened, bearded on the tide facing the vexillum Lathyrus. 



Tribe III. Hedysareae. Stamens monadelphous or 

 diadelphous. Legume separating transversely into 1-seeded 

 indehiscent reticulated joints, or 1-jointed. Stems not 

 twining. 



* Flowers yellow. 



Leayes pinnate. Stamens diadelphous, 5 and 5. Flowers perfect. ^Eschtnomene. 



palmately compound. Legirme 2-5-jointed. Flowers perfect. ....Zornia. 



trifoliate. Anthers of 2 forms moncecious. 



Sttlosanthes. 



pinnate. alike. monoecious. 



Chapmannia. 

 ** Flowers white orpuiple. 



Legnme 1-jointed. Peduncles axillary Lespedeza. 



2-6-jointed, bristly. Racemes terminal Desmouium. 



Tribe IV. Fhaseoleee. Stamens monadelphous or 

 diadelphous, 9 and 1. Legume 2-valved, not jointed. 

 Cotyledons thick and fleshy ; usually raised aboveground 

 in germination. Chiefly twining vines. 



