14 KEY TO THE SPECIES 



y Blade of leaf much longer than broad. 

 Leaves evergreen, thick and leathery. 

 Edges of leaves prickly. 



Leaves less than twice as long as 



broad American Holly (118) 



Leaves more than twice as long as 



broad Dahoon Holly (120) 



Edges of leaves not prickly. 



Leaves averaging less than 2 inches 



long Yopon Holly (119) 



Leaves averaging more than 2 

 inches long 



Fruit a red berry Dahoon Holly (120) 



Fruit a silky pod Loblolly Bay (139) 



Leaves not evergreen. 



Teeth of leaves with bristle tips. 



Leaves white tomentose beneath. . .Chinquapin (42) 

 Leaves not tomentose beneath. . . . Chestnut (41) 

 Teeth of leaves not bristle tipped. 

 Leaves over 5 times as long as 

 broad. 



Branchlets drooping Weeping Willow (p. 28) 



Branchlets not drooping. 



Leaves green beneath Black Willow (20) 



Leaves whitish beneath Ward's Willow* (21) 



Leaves less than 5 times as long , 

 as broad. 



Leaves with conspicuous paral- 

 lel veins from the mid-rib to 

 the edge. 



Bark smooth or with only 

 slight furrows and cracks. 



Leaf margin undulate Witch Hazel (82) 



Leaf margin smooth or mi- 

 nutely toothed Buckthorn (134) 



Leaf margin distinctly 

 toothed. 



Bark whitish, trunk with- 

 out ridges Beech (40) 



Bark very dark, trunk 



with ridges Hornbeam (36) 



Bark quite rough or papery. 

 Leaves and young bark 

 with odor of wintergreen. 

 Bark whitish, peeling off 



in papery layers Yellow Birch (39) 



Bark not white or papery Cherry Birch (38) t 



* The leaves of the Silky Willow, which is only a shrub, are also 

 whitish beneath and must not be confused with this, 

 t See also B. alleghanensis (p. 36). 



