126 



FOUNDATIONS OF BOTANY 



flat and then grouped into a sort of cone ; in the snow- 

 ball each half of the leaf is plaited in a somewhat fan-like 

 manner, and the edges of the two halves are then brought 

 round so as to meet; in the lady's mantle the fan-like 

 plaiting is very distinct ; in the wood sorrel each leaflet 



FIG. 87, 1. Types of Vernation. 

 1, 2, Cherry ; 3, 4, European walnut ; 5, 6, snowball ; 7, lady's mantle ; 8, oxalis. 



is folded smoothly, and then the three leaflets packed 

 closely side by side. All these modes of vernation and 

 many others have received accurate descriptive names by 

 which they are known to botanists. 



137. Importance of Vernation. The significance of ver- 

 nation is best understood by considering that there are two 



