CLASS XVII. ORDER II. 279 



309. LupiNus. Stamens all united ; anthers alter- 

 nately rounded and oblong; legume coriaceous, swell- 

 ing at the seeds. 



310. Crotalaria. Banner cordate, large ; keel acu- 

 minate ; filaments connate, with a dorsal fissure; le- 

 gume pedicelled, turgid. 



311. Phaseolus. Keel with the stamens and style 

 spirally twisted. 



312. Lathyrus. Style flat, villous above, broader 

 upward; two upper segments of the calyx shorter. 



313. Vicia. Calyx with two teeth above and three 

 longer straight teeth below; banner emarginate ; stig- 

 ma transversely bearded on the under side. 



314. Trifolium. Legume hardly longer than the 

 calyx, falling oft' entire ; flowers more or less in heads. 



315. Lespedeza. Calyx five parted; keel of the 

 corolla obtuse; legume lenticular, unarmed, one 

 seeded. 



316. Hedysarum. Calyx five cleft; keel of the 

 corolla obtuse ; loment jointed, the joints compressed 

 and one seeded. 



317. Glycine. Calyx two lipped ; keel of the co- 

 rolla turning back the banner at the tip; legume 

 many seeded. 



318. RoBiNiA. Calyx four cleft, the upper segment 

 two parted ; banner roundish ; legume compressed ; 

 elongated. 



319. Tephrosia. Calyx teeth subulate, subequal ; 

 stamens monadelphous ; legume compressed, coriace- 

 ous. 



320. Medicago. Legume spiral, compressed, push- 

 ing the keel from the banner. 



