22 KEY FOK THE DETERMINATION OF THE 



(c) Leaves toothed, oblong, small, 2 inches long: 

 buds small and acute, or large, round, and 

 flattened from the top : flowers seeming soli- 

 tary, large and white ; fruit a cluster of red 



berries; twigs purple or green, (p. 63.) Dogwood. 



(d) Leaves oblong, 1* to 3 inches long, toothed 

 or entire-margined; buds, long-stalked, rusty- 

 scurfy ; flowers white, small, in flat topped 

 clusters; fruit black or bluish, containing a 

 seed gi'ooved on the side ; small trees or 



shrubs several kinds of Black Haw^s '. 



(e) Leaves broader and short, 3 to 5 lobed ; fruit 



with wings. — Maples. (The three first fre- 

 quently grown as shade trees.) 



Buds red, blunt ; leaves white beneath, 



generally with 3 shallow lobes ; very 



common; wings of fruit f inch long. (p. 52.) Red Maple. 



Buds red, blunt ; leaves white beneath 



with 3 to 5 lobes; wings of fruit 



more than 1 inch long; cultivated, (p. 5L) White Maple. 



Buds brown, acute ; leaves over 2 inches 



wide, green or white beneath with 3 



lobes, each lobe 3-notched ; large trees 



with rough, hard, shaggy bark ; fruit 



U inch in length, (p. 50.) Sugar Maple. 



Leaves as in the sugar maple, but only 



half the size ; fruit less than one inch 



long ; small trees with smooth gray 



bark, branching near the ground; 



rocky river banks in the counties 



drained by the Yadkin and Catawba 



rivers " White-bark Maples 



Small trees of the liigh luountains, 



above 3,000 feet, with striped branches, 



green twigs and large, smooth, 3-lobed 



leaves ; long, stalked, purplish buds. (p. 49.).-Striped Maple. 



Small trees of the highest mountains, 



over4.000 feet, with purplish twigs and 



3-lobed leaves, velvety beneath, (p. 48.) Mountain Maple. 



(4) LEAVES SIMPLE AND ALTERNATE OR SCATTERED ALONG THE TWIG. 



(a) Leaves mostly rather large, 3 or more inches 

 long, nearly as broad as long, moi-e or less 

 heart-shaped. 



(1) Small trees ; leaves smooth and with 



entire edges; fruit a pod; flowers in 



early spring, bright red. (p. 57.) Rbdbud. 



(2) Larger trees, with leaves triangular, 



smoothisli, finely toothed on the mar- 

 gins ; buds resinous when crushed. — 

 Cotto7iwoods. 



Trees of eastern swamps ; leaves 



1 Species ot VilDurnum. 



2 Acer leucoderme, Small. Bui. Tor. Bot. CI., xxli, p. 367. 



