so THE PEANUT— THE UNPREDICTABLE LEGUME 



standard. The fifth tooth is linear and lies under the keel. The petals and 

 staminal column are adnate at their bases and are inserted together at the 

 summit of the tube. The standard is broadly inserted while the wings 

 and keel are attached by means of claws. The staminal column is usually 



Figure 14. — A peanut flower as seen in longitudinal optical section. S, standard ; W, 

 wing ; St, stigma ; A, anthers ; C. calyx lobe ; K, keel ; T, staminal column ; 

 Style; "C tube", hypanthium ("calyx tube") ; O, ovary; Sc, bracts (b and f 

 of fig. 13). At lower right the ovary (O) is shown in enlarged section; Ov, 

 ovule ; Es. embryo sac. (after Smith, 66.) 



