198 TREES OF NORTH AMERICA 



and at maturity dark green, lustrous, glabrous or puberulous along the midrib above, 

 paler, glabrous or sparingly villose and furnished with small tufts of axillary hairs below, 

 the upper three leaflets 4'-6' long and 2'-2' wide, and twice the size of those of the lowest 

 pair. Flowers: staminate in rusty pubescent aments 2'-3' long, their bract slender, long 

 acuminate, 3 or 4 times longer than the acuminate calyx-lobes; stamens 4 or 5, anthers 

 yellow, slightly villose toward the apex; pistillate in 1 or 2-flowered short-stalked spikes, 

 slightly angled, thickly coated with rufous hairs like the bract and bractlets. Fruit sub- 

 globose, puberulous, Ij'-lf ' in diameter, with a husk T y~i' thick, splitting freely to the base 

 by slightly winged sutures; nut slightly compressed, rounded at base, abruptly narrowed 

 and acute at apex, 4-angled above the middle or nearly to the base; dark reddish brown, 

 conspicuously reticulate- venulose with pale veins, with a shell about ' thick; in drying 

 often cracking longitudinally between the angles; seed small and sweet. 



A tree, usually 30-45 or rarely 60 high, with a trunk 12'-24' in diameter, large spread- 

 ing often drooping more or less contorted branches forming a narrow head, and slender light 

 red-brown branchlets marked by pale lenticels, more or less densely rusty pubescent during 

 their first season and dark gray-brown and glabrous or nearly glabrous the following year. 

 Winter-buds ovoid, covered with rusty pubescence mixed with silvery scales, furnished at 

 apex with long pale hairs; the terminal bud abruptly contracted and long-pointed at apex, 

 f '-%' in length and |' |' in diameter, and 2 or 3 times larger than the flattened acute lateral 

 buds. Bark thick, deeply furrowed, rough, dark often nearly black. Wood hard, brittle, 

 little used except for fuel. 



Distribution. Dry sandy uplands with Post and Black Jack Oaks; northern and eastern 

 Texas (Grayson, Cherokee, San Augustine and Atascosa Counties), and in central Okla- 

 homa (dry sand hills, Muskogee County). 



Carya Buckleyi var. arkansana Sarg. 

 Carya arkansana Sarg. 



Differing from Carya Buckleyi in the shape of the fruit and sometimes in the bark of the 

 trunk. Fruit obovoid, rounded at apex, rounded or gradually narrowed or abruptly COD- 



r 



Fig. 189 



tracted into a more or less developed stipe at base, or ellipsoidal, or ovoid and rounded at the 

 ends, t'-l^' in length and in diameter, with .a husk T V-y thick, splitting to the middle or 

 nearly to the base by slightly winged sutures; nut oblong to slightly obovoid, rounded at 





