194 



LEaUMINOSM. 



Key to the Suborders and Tribes. 



Petals imbricate. 



Calyx-segments united above the level of the disk, the upper petal 

 (standard) exterior (Suborder I. Papilionacb^). 



Stamens 1 or 2-adelphous. 



Pods dehiscent along both sutures (indehiscent in Psoralia) . 



Leaves simple, digitate or pinnate, if even-pinnate the 

 rachis not produced. 



Leaves simple or digitately 3- 

 fol., stamens 1-adelphous I. Geniste^. 



Leaves pinnately 3-fol. leaf- 

 lets toothed, stamens 2- 

 adelphous 



Leaves pinnately 3-fol., rarely 

 fin Clitoria) 5-7-fol., or 

 (in Flemingia) 1-fol. or 

 digitately 3-fol. and then 

 with 2-adelph. stamens ; 

 when stamens are 1-adelph. 

 the upper filam. is attached 

 to the others at the base 



Leaves odd-pinnate except in 

 Sesbania, rarely simple, not 

 toothed ; stamens usually 2- 

 adelph., but if 1-adelph. the 

 upper stamen is free at the 



Leaves even-pinnate, the rachis 

 continued as a tendril or 

 bristle, stamens 2-adelphous . 



Pods indehiscent, or opening along 

 the lower suture. 



Pods not segmented, always 

 quite indehiscent, leaves odd- 

 pinnate .... 



Pods breaking into 1-seeded 

 indehiscent segments, or if de- 

 hiscent {Desmodium in part) 

 opening along lower suture 

 only, leaves odd -pinnate (except 

 in Zornia and Smithia) • 



n. TBIFOLIEiE. 



Stamens freo 



in. Phaseole^. 



rv. Galegb-e. 



V. VlCIE^. 



VI. DALBBRaiE^. 



Vn. HEDTSAfiB-ffi. 

 Ym. SOFHOBEJlk 



