HYBRIDS AND PARENTS 



At the left, a nut of the California 

 black walnut (Juglans calif ornica) , 

 the staminate parent; in the center a 

 nut of the eastern black walnut (Ju- 

 glans nigra), the pistillate parent; at 

 the right the nut of the Royal hybrid, 

 all shown in natural size. It will be 

 seen that the hybrid nut is fairly inter- 

 mediate between the parent forms in 

 its general appearance, but that it 

 greatly surpasses either of them in size. 



