Teees of North Cabolina 17 



Lobes rounded, cup of acorn 

 low. 



Leaves with seven or nine 

 regular lobes, whitish be- 

 neath. 



Acorns on short stalks. . . White Oak (43) 

 Acorns on long stalks. . . .Swamp White Oak (49) 

 Leaves with five to seven 

 deep, irregular, rounded 

 lobes, gray-green beneath. 

 Leaves averaging under 3 



■ inches long Scrubby Post Oak (45) 



Leaves averaging over 3 



inches long Post Oak (44) 



Lobes pointed, cup almost cov- 

 ering acorn Overcup Oak (46) 



More than 15 shallow lobes. 

 Acorn an inch or more long. 



Upland tree Rock Chestnut Oak (48) 



Low-ground tree Swamp Chestnut Oak (47) 



Acorn less than % inch long. . Yellow Chestnut Oak (50) 

 Lobes bristle tipped. 



Mature leaves green on both 

 sides. 

 Cup of acorn very low. 



Lobes of leaf shallow, acorn 



large Red Oak (52) 



Lobes of leaf deep ; acorn 



about % inch long Pin Oak (55) 



Lobes of leaf deep ; acorn 



more than % inch long. . Swamp Red Oak (54) 

 Cup of acorn deep, about half 

 the length of the acorn. 

 Leaf-stalk less than an inch 



long Turkey Oak (59) 



Leaf-stalk more than an 

 Inch long. 



Edge of cup usually in- 

 rolled, scales tightly 

 pressed together ; leaves 

 smooth and shining on 



both sides Scarlet Oak (53) 



Edge of cup not inrolled, 

 scales loosely pressed 

 together ; leaves dark- 

 green, under side yel- 

 low-scurfy when young, 

 but becoming smooth .. Black Oak (56) 



