Distribution. Woods in low sandy soil; eastern Texas (near Marshall, Harrison County, and Livingston, Polk County).
15. [Cratægus Engelmannii] Sarg.
Leaves oblong-obovate or rarely elliptic, rounded or often short-pointed and acute at apex, gradually narrowed or entire below, finely crenulate-serrate usually only above the middle and generally only at the apex, nearly fully grown and roughened on the upper surface by short rigid pale hairs when the flowers open about the middle of May, and at maturity coriaceous, dark green, lustrous and scabrate above, pale below, and pilose on both surfaces of the slender midrib and obscure primary veins and veinlets, 1′—1½′ long, and ½′—1′ wide; petioles glandular, villose when they first appear, soon glabrous, usually about ¼′ in length. Flowers ¾′ in diameter, on slender pedicels, in broad loose 8—11-flowered villose corymbs; calyx-tube narrowly obconic, villose or nearly glabrous, the lobes narrow, acuminate, entire, glabrous on the outer surface, usually puberulous on the inner surface; stamens 10; anthers small, rose color; styles 2 or 3. Fruit ripening early in November, on slender pedicels, in drooping many-fruited glabrous clusters, globose or short-oblong, bright orange-red, with a yellow cheek, about ⅓′ in diameter; calyx prominent, with large spreading lobes usually deciduous before the fruit ripens; nutlets 2 or 3, thick, with a broad rounded ridge, ¼′ long.
A tree, 15°—20° high, with a trunk 5′—6′ in diameter, wide-spreading usually horizontal branches forming a low flat-topped or rounded head, and branchlets covered with long pale hairs when they first appear, soon glabrous and bright red-brown, becoming gray or gray tinged with red during their second year, and armed with numerous stout straight or slightly curved spines 1½′—2½′ long.
Distribution. Dry limestone slopes and ridges; common near Allenton and Pacific, St. Louis and Franklin counties, Missouri; near Eureka Springs, Carroll County, Arkansas.
16. [Cratægus montivaga] Sarg.
Leaves obovate to oval, rhombic or suborbicular, rounded, acute or acuminate or abruptly short-pointed at apex, concave-cuneate at base, and sharply coarsely serrate usually to below the middle with straight acuminate glandular teeth, covered above with short white hairs and glabrous below when they unfold, and at maturity dark green, lustrous and scabrate above, pale yellow-green below, 1′—1¼′ long, and ¾′—1′ wide, with a slender midrib and prominent primary veins; petioles slender, villose early in the season, becoming glabrous, about ¼′ in length. Flowers opening late in April, about ½′ in diameter, on villose pedicels ¼′—½′ long, in compact mostly 7—10-flowered villose corymbs, their bracts and bractlets linear-obovate, conspicuously glandular-serrate; calyx-tube broadly obconic, glabrous or with occasional hairs near the base, the lobes gradually narrowed from a wide base, glandular-serrate, sometimes laciniate near the acuminate apex, glabrous on the outer surface, villose on the inner surface; stamens 10—15, usually 10; anthers pink; styles 2 or 3. Fruit ripening late in September or in October, on erect nearly glabrous or villose pedicels, short-oblong to ellipsoid, orange-red, about ⅓′ long; the calyx enlarged and conspicuous; flesh thin, yellow-green; nutlets 2 or 3, rounded at apex, with a low broad rounded ridge, about ¼′ long.
A bushy tree, rarely more than 12°—15° high, with a short trunk 10′—12′ in diameter, erect and spreading branches, and slender nearly straight branchlets orange-brown and covered with long scattered pale hairs when they first appear, dull red-brown and glabrous at the end of their first season, becoming gray the following year. Bark of the branches smooth and dark brown, becoming slightly scaly on the trunk.