JUGLANDACE^ 



189 



ovate, rounded or acute and short-pointed at apex, light green covered with soft silky 

 pubescence on the outer, and often bright red and pilose on the inner surface, becoming 

 I'-l^' long and \' broad. Bark |'-f thick, close, slightly ridged by shallow irregular 

 interrupted fissures and covered by dark gray closely appressed scales. Wood very heavy, 

 hard, tough, strong, close-grained, flexible, rich dark brown, with thick nearly white sap- 

 wood; used for the same purposes as that of the Shell bark Hickory. 



Distribution. Eastern Massachusetts southward to Lake County, Florida, and east- 

 ern Texas, and through Ohio, southwestern Ontario, southern Michigan, Illinois and Indi- 

 ana to southeastern Iowa, and through Missouri to eastern Oklahoma; comparatively rare 

 at the north, growing on dry slopes and ridges and less commonly on alluvial bottom- 

 lands; absent from eastern Canada, northern and western New England, and New York 

 except in the neighborhood of the coast; the most abundant and generally distributed Hick- 

 ory-tree of the southern states, growing to its largest size in the basin of the lower Ohio 

 River and in Missouri and Arkansas; commonly in southern Arkansas and eastern Texas, 

 and occasionally in other southern states represented by var. subcoriacea Sarg., differing 

 in its larger, thicker, more pubescent leaflets, more prominently angled fruit with a thicker 

 husk, larger nuts, and in its longer winter-buds often |' long and f ' in diameter. 



X Carya Schneckii Sarg., believed to be a hybrid of C. alba and C. pecan, has been 

 found at Lawrenceville, Lawrence County, Illinois, and near Muscatine, Muscatine 

 County, Iowa. 



10. Carya leiodermis Sarg. 



Leaves 12'-14' long, with slender petioles and rachis slightly or densely pubescent with 

 fascicled hairs, becoming glabrous or nearly glabrous, and 7 or rarely 5 thin finely serrate 

 leaflets, long-pointed at apex, and gradually narrowed, cuneate and unsymmetrical at base, 



Fig. 179 



at first hoary tomentose below and pubescent above, becoming dark green and lustrous 

 on the upper surface and pale and slightly pubescent on the lower surface, especially on 

 the stout midrib, the terminal oblong-obovate with a stalk ' f ' in length, or nearly ses- 

 sile, of the same shape and often smaller than the nearly sessile upper leaflets, 4 '-5' long and 

 2'-2f wide, and much larger than the lanceolate lower leaflets. Flowers: staminate open- 

 ing after the leaves have grown nearly to their full size, in slender puberulous aments 



