JUGLANDACE.E 



199 



I 



the ends, compressed, slightly 4-angled occasionally to the middle, pale brown, with a 

 shell '5' in thickness; seed small and sweet. 



A tree from 60-75 high, with a trunk 2 in diameter; southward usually much smaller. 

 Bark on some trees dark gray, irregularly fissured, separating into thin scales, and on others 

 close, nearly black and deeply divided into rough ridges. 



Distribution. Dry hillsides, rocky ridges, or southward on sandy upland; southwestern 

 Indiana (Knox County), southern Illinois, northeastern Missouri and southward through 

 Missouri and Arkansas to eastern Oklahoma, western Louisiana and northern and eastern 

 Texas to the valley of the Atascosa River, Atascosa County; the common Hickory of the 

 Ozark Mountain region, Arkansas, and here abundant on dry rocky ridges at altitudes 

 of 1200-! 800; in Texas the common Hickory from the coast to the base of the Edwards 

 Plateau; trees with the smallest fruit northward; those with the largest fruit with thickest 

 husks in Louisiana, and in southern Arkansas (f. pachylemma Sarg.), a tree with slender 

 nearly glabrous branchlets, deeply fissured pale gray bark, rusty pubescent winter-buds 

 and fruit 2|' long and 2' in diameter, with a husk \' in thickness. 



Carya Buckleyi var. villosa Sarg. 



Hicoria glabra var. villosa Sarg. 



Hicoria villosa Ashe. 



Carya villosa Schn. 



Carya glabra var. villosa Robins. 



Leaves 6'-10' long, with slender petioles and rachis pubescent with fascicled hairs early in 

 the season, generally becoming glabrous, and 5-7, usually 7, lanceolate to oblanceolate finely 

 serrate leaflets long-pointed and acuminate at apex, cuneate or rounded and often unsym- 

 metrical at base, sessile or the terminal leaflet sometimes short-stalked, dark green and gla- 



Fig. 190 



brous above, pale and pubescent below, the low::- side of the midrib often covered with fasci- 

 cled hairs, the upper leaflets 3'-4>' long and I'-l^' wide, and twice as long as those of the low- 

 est pair. Flowers : staminate in aments pubescent with fascicled hairs, 4 / -8 / long, pubescent, 

 their bract acuminate, not much longer than the rounded calyx-lobes; pistillate in 1 or 

 2-flowered spikes, rusty pubescent, slightly angled. Fruit obovoid to ellipsoidal, rounded 

 at apex, cuneate and often abruptly narrowed into a stipitate base, rusty pubescent and 

 covered with scattered yellow scales, about 1' long and f in diameter, with a husk iV in 

 thickness, splitting tardily to the base by 1 or 2 sutures or indehiscent; nut ovoid, rounded 



