14 



FOLIAGE-LEAVES 



on the top of the stem. We then draw a plan such as would 

 be seen in cutting across a bud, the outermost leaves being 

 those which are inserted at the lowest level, and the innermost 

 leaves being those which are nearest the apex. Thus the 

 diagram represents a sort of ground plan of the leaves and 



Fig. 13. 



Fig. 14. 



Fig. 15- 



Fig. 16. 



Stem. Figs. 13, 14, 15, 16, will explain this second method 

 of representing leaf-arrangement by diagrams. Fig. 13 

 represents whorled arrangement with two leaves in each whorl. 

 Figs. 14, 15, 16, are diagrams of spirally-placed leaves with 

 divergences of ^, ^, and f respectively. 



FOLIAGE-LEAVES. 



A complete type, of green leaf (fig. 17) consists of three 

 parts : (i.) a flattened green dlade or lamina {sp), which is the 

 most conspicuous portion of the leaf; (ii.) a narrow, elongated 

 stalk or petiole (st), which connects the blade with (iii.) the 



