Leaves widest above the middle, broad-cuneate, concave-cuneate or nearly truncate at base, deeply or rarely only slightly divided by broad sinuses rounded in the bottom into 5 or 7 lobes, the terminal lobe 3-lobed and acute at apex, the upper lateral lobes broad and more or less divided at apex and much larger and more deeply lobed than those of the lowest pair, when they unfold densely covered with fascicled hairs and often bright red, soon glabrous, thin, dark green and lustrous above, pale and lustrous and rarely furnished below with small inconspicuous axillary tufts of pale hairs, 3′—3½′ long, 2½′—3′ wide, with a thin midrib and slender primary veins running to the points of the lobes; petioles slender, soon glabrous, ¾′—1½′ in length. Flowers: staminate in slender villose aments 3′—4′ long; calyx thin, villose on the outer surface, divided into 4 or 5 acute lobes shorter than the stamens; pistillate on short hoary tomentose peduncles, their involucral scales brown tinged with red; stigmas bright red. Fruit short-stalked, usually solitary; nut ovoid, narrowed and rounded at apex, light red-brown, often striate, ¼′—¾′ long and broad, sometimes acute, nearly 1′ in length and not more than ⅓′ in diameter; cup turbinate, covered with thin ovate acuminate slightly appressed glabrous scales, in the small fruit of trees on dry hills inclosing a third or more of the nut, in the larger fruit of trees on better soil comparatively less deep. A tree on dry hills rarely more than 30° tall, with a trunk 8′—10′ in diameter, small spreading or erect branches and slender red or reddish brown glabrous or rarely pubescent branchlets; often a shrub; on better soil at the foot of hills occasionally 50° high with a trunk 12′—18′ in diameter. Winter-buds ovoid, acute, ⅙′—¼′ long and covered with closely imbricated acute slightly or densely pubescent red scales. Bark light brown tinged with red, ¾′—1′ thick, deeply ridged and broken into plate-like scales. Distribution. Dry limestone hills and ridges, and in the more fertile soil at their base; central and western Texas (Dallas, Tarrant County to Travis and Bexar Counties), and to the Edwards Plateau (San Saba, Kerr, Brown, Coke and Uvalde Counties); westward replaced by the var. _chesosensis_ Sarg. differing in the acuminate lobes of the leaves and smaller cups of the fruit; known only on the dry rocky slopes of the Chesos Mountains, Brewster County, Texas; and by the var. _stellapila_ Sarg., differing in the presence of fascicled hairs on both surfaces of the mature leaves and on the branchlets of the year; above Fort Davis, Jeff Davis County, Texas. 4. Quercus ellipsoidalis E. J. Hill. Black Oak. [Illustration: Fig. 226]