26 



GENERAL PRINCIPLES. 



Round, roundish, as they approach a circular form like 

 fig. 21. The point is often a distinguishing feature, 

 some terminating suddenly in a sharp point, others 

 drawn out to a long, sharp point, peaked, whilst 

 others are nearly round. They differ much, too, in 

 the form of the base, some are rounded, some sharp, 

 and some heart-shaped. 



22. 



rigs. 23 to 2, forms of leaves, 

 obovate. 



22, oval. 23, oblong. 24, lanceolate. 33, ovate. 26, 



The divisions of the edges are serrated or toothed, when 

 the edges are cut into sharp teeth, directed towards the 

 point of the leaf; finely (fig. 27) or coarsely (fig. 28) ser- 

 rate, as these teeth are fine or coarse; doubly senate, 

 when the principal division or tooth is subdivided. 

 Crenate (fig. 29), when the divisions are rounded, instead 

 of being sharp like teeth. 



