IV.] 



LATHYRUS. 



species of Vetch, there are two kinds of pods. One 

 of the ordinary form and habit (a), the other (6) oval, 



FIG 53. Lnthyrus amphicarpos. (After Sowerby.) 

 a, ordinary pods ; 6, subterranean pods. 



pale, containing only two seeds borne on underground 

 stems, and produced by flowers which have no corolla, 

 Again, a species of the allied genus Lathyrus, 

 Fig. 53, L. amphicarpos, affords us another case of the 

 same phenomenon. 



