PLATE 52 



Fig. 1. Typical leaves from two plants of eaeh of the parent strains and of 

 the Fj, together with one leaf from each of eight F, plants, which show the results 

 obtained when sealaris and simplex plants are crossed. Note the ajtpearance in 

 F., of the curved terminal lobe typical of the sealaris grandparent. 



[296] 



