192 



TREES OF NORTH AMERICA 



Distribution. Hillsides and dry ridges; southwestern Vermont to western New York, 

 southeastern Ontario, southern Indiana and southwestern Illinois, and southward to Dela- 



Fig. 181 



ware, the District of Columbia and eastern Virginia, and along the Appalachian Mountains 

 to North Carolina; in northern, central and eastern Georgia, northern Alabama and eastern 

 Mississippi. 



The name " Pignut " usually applied to this tree and to the forms of C. ovalis Sarg., 

 especially in the north, properly belongs to C. cordiformis Schn. 



Passing into 



Carya glabra var. megacarpa Sarg. 

 Carya megacarpa Sarg. 



Leaves 12'-14' long, with slender glabrous petioles and 5-7 lanceolate to oblanceolate 

 leaflets long-pointed and acuminate at apex, gradually narrowed and unsymmetrical at 

 base, finely serrate, glabrous or very rarely pubescent, often furnished below with small 

 clusters of axillary hairs, the three upper 8'-10' long and 1^'-2|' wide and about twice as 

 large as those of the lowest pair. Flowers: staminate in slightly villose aments 2^'-3' in 

 length, villose, their bract long-pointed, acuminate, villose, twice longer than the calyx- 

 lobes, stamens 4-6, anthers yellow, villose above the middle; pistillate in short-stalked 

 spikes, their involucre only slightly angled, covered with pale yellow hairs, the bract acu- 

 minate, twice longer than the bractlets and calyx-lobes. Fruit oblong-obovoid with a stipe- 

 like base to short-obovate and rounded or abruptly cuneate at base, rarely depressed at 

 apex, slightly flattened, often covered with bright yellow scales, l'-2' long, l'-l ' in diameter, 

 with a husk i' 5' in thickness, opening tardily to the middle usually by one or by two su- 

 tures, or often remaining closed; nut broadest toward the rounded apex or oblong and oc- 

 casionally acute at apex, gradually narrowed and acute at base, often compressed, slightly 

 or rarely prominently angled (f. angulata Sarg.), with a shell f '-^' in thickness; seed small 

 and sweet. 



A tree 50-70 high, with a trunk up to 2 in diameter, stout spreading and drooping 

 branches, and stout or rarely slender glabrous branchlets, reddish brown at the end of their 



