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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 



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fig. 49. Serrate leaf of Chestnut. 

 Fig. 50. Doubly serrate leaf of Elm. 

 Fig. 51. Dentate leaf of Arrow- wood 



( Viburnum dentatum). 

 fig. 52., Crenato leaf of Catmint. 



Fig. 53. Repand leaf of Enchanter's 

 Night-shade ( Circcea Lutetiana). 



Fig. 54. Undulate leaf of Shingle Oak 

 (Q. imbricaria). 



Fig. 55. Lobod 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 ? 



