LEAF-FORMS AND FIGURES. 



19 



LESSON IV 



FORMS AND FIGURES OF LEAVES. 



1 0. IN many kinds of leaves we find the parts at the base 

 more or less enlarged backwards, as yon see in this picture 



Fig. 22. The Morning-glory. 



of the Morning-glory leaf (Fig. 22). This is the heart 

 shaped, or, more properly, the cordate loaf. It is truly an 



