WMAT IS A LEAFf 



79 



m the dewberry,— in the axils of each of the 

 three parts, or in the axil of the stalk af 

 Again, leaves are borne at nodes ; and the 



Pig. 72. 

 Leaf of Lombardy poplar. 



Pig. 73. 

 Spray of young apple leaves. 



plant axis upon which they are borne either ex- 

 tends beyond them or gives evidence that it may 

 do so. 



83. What comprises the leaf in Fig. 72 (the 



