II] BRANCHING 33 



We thus see that the branching of the shoot, like that 

 of the root, but to an even greater extent, loses symmetry 

 as time progresses owing to the action of the environ- 

 ment ; but, apart from this, the branching of shoots is 

 much more complex than that of the root owing to the 

 much more varied functions performed. As we shall see, 

 the same is true as regards the modifications and adapta- 

 tions they undergo. 



w. v. 



