EXOGENOUS SERIES BROADLEAF WOODS. 49 



Silver Maple, Soft Maple. \ A , C 



( Acer dasycarpum Ehr. 



Nomenclature. (Sudworth.) 



Silver Maple, Soft Maple (local White Maple (Me. , Vt. , R. I. 



and common names). N. Y., N. J., Pa., W. Va. 



Swamp Maple (W. Va., Md.). N. C., S. C., Ga., Fla. 



Water Maple (Pa., W. Va.). Ala., Miss., La., Ky., Mo. 



River Maple (Me., N. H., 111., Ind., Kans., Nebr. 



R. I., W. Va., Minn.). Minn.). 



Locality. 



New Brunswick to Florida, westward intermittently to Dakota 

 and Indian Territory. Best development in lower Ohio 

 River basin. 



Features of Tree. 



Forty to ninety feet in height, occasionally higher. Three to 

 five feet in diameter. Fine shape, sometimes suggests elm. 

 Fruit or "maple-key" with long, stiff, more than right- 

 angled wings ripens in early summer. Leaves whitish 

 beneath, turn showing yellow, but little or no red, in autumn. 



Color, Appearance, or Grain of Wood. 



Heartwood reddish brown, sapwood ivory-white, fine grain, 

 compact structure. Fibres sometimes twisted, waved, or 

 curly. 



Structural Qualities of Wood. 



Light, brittle, easily worked, moderately strong; receives high 

 polish. Not durable when exposed. 



Representative Uses of Wood. 



Woodenware, turned work, interior decoration, flooring, fuel. 



Weight of Seasoned Wood in Pounds per Cubic Foot. 



Modulus of Elasticity. 



1,570,000. 

 Modulus of Rupture. 



14,400. 



Remarks. , 



Waved, spiral, or curly figure pronounced in this species, very 

 real resemblance to lights and shadows on planed surfaces. 

 Small quantities of sugar present in sap, occasionally utilized. 



