26 OBJECT LESSONS IN BOTANY. 
LESSON VI. 
MARGIN AND APEX. 
29. In describing a leaf we are to consider the patterns 
of its border, or margin, which are quite various, and often 
elegant. Some of the leaves heretofore noticed have the 
Fig. 49. Serrate leaf of Chestnut. Fig. 53. Repand leaf of Enchanter’s 
Fig. 50. Doubly serrate leaf of Elm. Night-shade (Circea Lutetiana). 
Fig. 51. Dentate leaf of Arrow- wood Fig. 54, Undulate leaf of Shingle Oak 
(iburnum dentatum). (Q. imbricaria). 
Fig. 52, Crenato leaf of Catmint. Fig. 55. Lobed leaf of Chrysanthemum, 
margins entire and even, as in the Quince leaf, or the Lily. 
But most leaves are notched in various ways. For example, 
30. This Willow leaf (Fig. 3) is notched in the margin 
29. When is the margin said to be entire ? 
