ANGULAR DIVERGENCE. 

 Fio 42. 



39 



Pig. 42. — Shoot of the J£yochifcuto 



(Nerium odorum), 



with, verticillate leaves. 



Different kinds of the arrangement of leaves are represent- 

 ed in the following table. 



Arrangement of leaves 



Scattered 



Alternate. 

 . Fascicled. 



D , ( Opposite. 



IPolymerous j Vertici]late _ 



ANGULAR DIVERGENCE OF LEAVES. 



The lateral distance between the bases of any two adjacent leaves is 

 called the Angular Divergence, and it is expressed in fractions. In dif- 

 ferent individuals of the same species of plants the angular divergence is 

 usually constant. 



As the opposite leaves are exactly situated on opposite sides of the 

 stem (Fig. 41), the angular divergence must be just one-half of the cir- 

 cumference. 



In most cases the opposite leaves at any two adjacent nodes alternate 

 (Fig. 41 and 43), so that the leaves at the first node lie opposite to or 



