INTRODUCTION. 



Ixv 



LEAF AND BLOSSOM OF THE ELM. 



ULMACE.E. 



Elm tribe. 



An order composed of trees and shrubs wliich in- 

 habit the temperate parts of Asia^ North America, 

 and Europe, and are often valuable timber trees. 

 The Elm is the onh' British genus, which ^^dll be 

 described hereafter. 



e 



