118 



LEAF-TRACES 



[CH. 



Now it is noteworthy that the numbers and arrange- 

 ment of these leaf-traces are very constant in the leaf- 

 scars of the various species of trees and shrubs, as Schwartz 

 and other forest-botanists, and especially Schneider, have 

 shown. 



fl )] 



a 



w 



Fig. 59. Types of leaf-scars, a Fig ; b Horse-chestnut ; c Ailanthus 

 d Walnut; e Vine; /Maple; g Pynu, Willow, Sycamore; h Rose; i Rhus- 

 k Plane ; I Quercus Cerris ; m Elm ; n Oak ; o Lime ; p Chestnut ; q Prunus 

 r Privet; s ffippophae- t Mulberry; u Hornbeam; v Birch; w Viburnum'- 

 x Ash ; y Alder. 



