State Board of Forestky.' 311 



ain (Brown); Franklin (Haymond); Gibson (Schneck); Hamilton 

 (Wilson); Jay (M'Caslin); Jefferson (Coulter); Knox (Ridgway) 

 and (Thomas); Kosciusko (Clark); Marion (Wilson); Miami (Gor- 

 by) ; Noble (Van Gorder) ; Parke (Hobbs) ; Posey (Schneck) ; Wayne 

 (Petry and Markle). 



Additional records are: Vicinity of New Albany (Clapp); Put- 

 nam (Grimes) and (MacDougal); Tippecanoe (Coulter); Fulton, 

 Harrison, Hendricks, Jennings, Laporte, Madison, Posey, Steuben, 

 Vermillion, Warren and Wells (Deam). 



Economic uses. Wood heavy, hard, strong, close-grained, takes 

 a good polish, sap wood Hght, heart wood light brown, air dries 

 well but warps badly in the kiln. Used in building for frame mater- 

 ial and flooring, axles, neck yokes, bolsters, sand-boards, nibs for 

 scythe and cradle snaths. One of our best woods for fuel. 



The maple sugar and sirup of commerce is made principally from 

 this species. The amount and sweetness of the sap depends upon 

 the season and the tree. On an average it takes from 3 to 4 gallons 

 of sap to make a pound of sugar, and an average sized tree will 

 usually yield about 3-4 pounds of sugar. In 1900 Indiana ranked 

 third in the production of maple sirup, making 179,576 gallons and 

 51,900 pounds of sugar. Formerly there were many '^sugar camps" 

 but they are becoming rarer each year. 



Horticultural value. It is adapted to a moderately dry rich soil; 

 transplants with some difficulty if trees are removed from the 

 forest, nursery stock doing much better; grows slowly, but is hardy 

 and long lived; leaf period long. It is one of the most desirable 

 and most used of our native trees for ornamental and shade tree 

 purposes. It has enemies in the maple borer, tussock moth and 

 cottony maple scale. 



5. Acer nigrum Mi chaux. Black Sugar. Black Maple. Plate 

 113. Bark of young trees and the branches smooth and gray, be- 

 coming on older trees thick, deeply furrowed, very tight and not ex- 

 foliating, usually dark brown to nearly black; branchlets light 

 orange color; ridges of leaf scars prominently pubescent; leaves 

 usually about as wide as long, 6-15 cm. (23^-6 inches) long, 3-lobed, 

 sometimes 5-lobed, the lobes acute, more or less cordate at the 

 base, hairy beneath when young, becoming at maturity dark green 

 and glabrous above, a yellow green and remaining somewhat hairy 

 beneath, petioles hairy when young, becoming glabrous or nearly 

 so at maturity, usually showing some hairs around the swollen base 

 which later develop a scale-like appendage on each side; flowers 



