Treks of tiik Xouthkrx l^NiTEn States 87 



■"•. Acer saccharum Marsh. Su^ar .\rai)K'. A large 

 tiLf wiih \c'll()\v or sometimes red leaves in autumn. I. eaves 

 cordate or trnncatf at the base. 3-7 lobed. the lobes acuminate, 

 irrei^ularly sinuate, dark green above, pale and nearly glabrous 

 biiieath. Its saj) is the main source of maple sugar and 

 syrup. An a\ eragc tree will yield 2-10 lbs. of sugar a season. 

 \ ihu' sluide tree. Tiie ashes give large quantities of potash. 

 Wood heaxy, liard, strong and tough; used for fuel, interior 

 linish. furniture, keels of boats and ships, implements and 

 machinery, sucker rods, rims of bicycle wheels, piano action, 

 school apparatus, large wood type, tool and broom handles, 

 and wood carving. Newf. to Man., south to Fla. and Tex. 



It. Acer nigrum Mx. Black Maple. A large fine tree 

 with rough l)lackish bark. Leaves .cordate or truncate at the 

 liase, "^-T-lobed, the lobes broad and short, green on both 

 sides, generally more or less pubescent beneath. Tt is equally 

 valuable for the making of sugar. Wood much the same as 

 in the Sugar Maple, and used for the same purposes. Ont. 

 and Vt. to Ga.. S. Dak., La. and Avk. 



\7. Acer rubrum L. Red Maple. A tree with Haky or 

 smoothisli bark and reddish twigs. Leaves sharply H-j-lobed. 

 the lolie^ irregularly dentate, acute or actnninate. cordate at 

 ihe base, green above, whitish beneath. Wood of considerable 

 \ alue when it shows a "curly grain." Leaves crimson, scarlet 

 or yellow in autumn. Self-pruning like the preceding. In 

 >\\anii»s and low ground, also on moist hillsides. X. S. to 

 Man., l-'la.. Xeb.. and Tex. 



s. Acer saccharinum L. Silver Maple. A large tree 

 witli Haky bark, the twigs often reddish, self-pruned by basal 

 joints. Leaves deejily -Vlobed. the lobes rather narrow, 

 acuminate, coarsely and irregularly dentate, truncate or 

 sliyhtly curdate at the base, green above, silvery white and 

 more or less pul)escent beneath. A fine shade tree and much 

 planted. Wood soft and white ; used for furniture. Yields 

 a small amount of sugar. .Along streams. N. B. to Fla.. Ont., 

 S. Hak., Xei). and Okla. 



!». Acer negundo L. Boxelder. A small tree with 

 .^preading branches and glabrous, sometimes pubescent, green 

 and glaucous twigs. Leaves 3-7 foliate, leaflets ovate or oval. 

 The sap produces a slight amount of sugar. Wood light 



