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LANDSCAPE 



PREFACE. 



LIBRARY 



In this Leaf Key we have aimed to include all of the generally accepted native and 

 naturalized trees north of the latitude of the northern boundary of North Carolina and 

 east of the Rocky Mountains. To form a key, however, that would fit all of the unusual 

 or non-typical forms of leaves of each species would seem to be a hopeless task, but to 

 make one fit the typical leaves such as we consider as distinctive of the various species 

 and by which we recognize them seems possible and has been here attempted. 



This limitation to normal, typical leaves must be borne in mind in using the key 

 and only such leaves selected for identifiaction as we would consider average specimens on 

 a mature tree, not those on very young or excessively vigorous shoots. At the same time 

 specimens of the fruit should be secured or observed if possible, as brief descriptions of 

 the fruits have been included, either as an essential or an accessory part of the key; 

 though many species can be readily traced without referring to the fruits. 



In such an effort as this, where the greatest definiteness possible must be conveyed, 

 the use of certain few technical terms is unavoidable, but they are few in number, and, 

 for the convenience of those who may want them defined, a glossary (really much more 

 comprehensive than here required) has been appended to the key. The exact meaning of 

 the few used should be clearly understood at the outset. 



Unfortunately there are certain technical terms that have come to be applied too 



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