Ha^'dbook of Teees of the Xoktheiix States axd Canada. Ill 



The Large-tootli Po]ilar rarely if ever at- 

 tains a greater height than 70 or SO ft. or 2 

 ft. iu tliickness of trunk. When sulliciently 

 isolated from other trees it cle\elo|js a loose 

 oval or rounded top of handsome clean foliaye. 

 always rustling with the slightest breeze, on 

 account of the peculiar formation of petioles. 

 The bark of branches and j'oungcr trunks is 

 smooth and of a grayish green color. Later it 

 becomes fissured into rough firm ridges. It is 

 found mostly on sandy slopes and the banks of 

 streams in company with tlie Hemlock, Pines, 

 Oaks, ilaples. Shad-bush, Butternut, Red 

 Spruce, etc. As with tlie Quaking .-\sp. its 

 hardy seeds scattered widely by the wind 

 quii'kly clothe with new "\erdure tracts of 

 forest lands recently denuded by lires. Then 

 protected by the shade of these seedlings the 

 more tender seeds of more useful trees are able 

 to germinate and grow. 



Its wood is light, a cubic foot weighing 

 28.87 lbs., soft and not strong and is used in 

 the manufacture of excelsior, paper, nooden- 

 nai'e and occasir)nally for lundjer.' 



Lenrcs orbicular-io-ati'. :VP) in. b.m;. i/oarsely 

 and irregularly dentate, frem rilUiisr lo rounded 

 at hase, siiort acuminate, densely \^-liile tenientose 

 at first but finally .glabrous, thin and firm ; petioles 

 ioQi;, slender and laterally coniprcssed ; winter 

 hnds puberulons, f''luircr.'< : aments t-.'l in, lon^ : 

 scales with silky pale hairs and irre;;ulai'ly 5-7- 

 '■left : stacoens ti-l- : stigmas it with lenff filiform 

 lobes. Fruit (May-.Tune): capsules Pm.^-conic. 2- 

 valvcd, about 's' in. lonL; : si^rds dark brown, 

 minute. 



1. A. W., I, IS. 



