ASP, OK ASPEN-TREE. POPULUS 

 TREMULA. 



Natural order -, Amentacece. A genus of the 

 Dicecia Odandria class. 



" Rustling turn the many-twinkling leaves 

 Ofaspintall." 



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 Kep^g-, from 

 jpKw the same as K^KU, 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 



