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, whicb are quite varions, and often 

 elegant. Some of the leaves heretofore noticed have the 



Fig. 49. Serrate leaf of Chestnut. 

 Fig. 50. Doubly serrate leaf of Elm. 

 Fig. 51. Dentate leaf of Arrow- wood 



( Viburnum dentatum). 

 Fig. 52. Crenste leaf of Catmint. 



Fig. 53. Kepand leaf of Enchanter's 

 Night-shade ((Xfosa Zutetiana). 



Fig. 54. Undulate leaf of Shingle Oak 

 (Q. imbi-iearia). 



Fig. 55. Lobed leaf of Ohryaanthemum. 



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 sa;id to be entire ? 



