THE POPLAR AND THE WILLOW. 



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or white poplar, are angularly toothed or lobed, and covered upon the 

 under- surf ace with a grey and felty substance ; in the black poplar they 

 are perfectly glabrous, and nearly triangular, without angular lobes ; ia 

 the aspen they are likewise glabrous, but circular, or nearly so, and 



White Poplar. Black Poplar. Aspen. 



with coarse indentations. The epithet "black," it may be useful to 

 observe, is applied to the kind of poplar so designated not because of 

 actual nigritude in any part or portion, but as an antithesis to "white," 

 the well-deserved epithet of the abele. A similar antithesis gives the 



9 



