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ASP, or ASPEN-TREE.— POPULUS 

 TREMULA. 



Natural order, Amentacece. A genus of the 

 Dicecia Octandria class. 



" Rustling turn the many-twinkling leaves 



Ofaspin tall." 



This aboriginal of our forests moves its 

 restless foliage also in most boggy grounds 

 from Sweden to Italy. It is a branch of the pop- 

 lar family, and from the incessant trembling 

 of its leaves, was called by the Latins Populus 

 tremula. The Greeks named it Kepnts, from 

 TtepKu the same as k^kco, strepitumdo, to creak. 

 The English name is from the German Espe, 

 which is their general name for all poplars. 

 The heart-shaped leaves of this tree adhere 

 to the twigs by a long and slender stalk, the 

 plane of which is at right angles to that of the 

 leaf, and consequently allows them a much 

 freer motion than other leaves that have their 

 planes parallel with their stalks. This, with 

 their cottony lining below, and their hairy 



