WHITE POPLAR 



209 



and pubescent above when young, vary in shape from sub- 

 orbicular or broadly ovate to ovate-cordate, and more or 

 less sinuate-toothed, to more or less deeply 3 5-lobed. 

 As a rule, the leaves of suckers and at the ends of strong 

 shoots are large, 6 12 cm. (or up to 17 or 18) long x 5 9 

 (or up to 15) cm. broad, and palmately 3 5-lobed, with 

 rather broad sinuses and unequal broad blunt teeth ; each 



1 234 



Fig. 65. White Poplar, showing the variations in form of the leaves (Wi). 



lobe more or less ovate or triangular and sinuate-dentate. 

 Those at the bases of shoots or on the weaker shoots and 

 on old trees are smaller (4 7 x 3 4 cm. long), rounded, 

 sub-orbicular or nearly heart-shaped, to ovate or oblong- 

 ovate, with sinuate-angular lobes or blunt teeth (see p. 253). 

 w. ii. 14 



