OF ORNAMENTAL TREES. 183 



somewhat inclined to throw up suckers in 

 dry soils. May be propagated as No. 1. 



The best Bartram specimen is seventy feet 

 high and four and a half feet in circumfer 

 ence. 



4. P.CASAVESSiSjM ichaux. Young branches 

 angled. Leaves cordately ovate, tapering to 

 a point, finely and rather unequally toothed ; 

 petioles compressed; buds gummy. Cana 

 dian poplar. Native of the Northern States. 

 It frequently grows to eighty or ninety 

 feet high, and is well worthy of a place in 

 any collection. In soils similar to the last. 



5. P. CANDICANS, Aiton. Shoots round. 

 Buds very gummy. Leaves heart-shaped at 

 the base, ovate-acuminate; petiole flattened 

 in the upper part, frequently hairy. Onta 

 rio poplar ; balsam poplar of the Northern 

 States. 



It is in every way a larger and a finer 

 tree than the true balsam, and is readily dis 

 tinguished by the leaves. 



6. P. CANESCENS, Smith. Leaves roundish, 

 very slightly lobed, toothed. Stigmas eight. 

 Gray poplar. Native of England. 



By many considered a variety of the abele. 



