Leaves oblong-ovate, acuminate, gradually narrowed and cuneate or rounded at the often unsymmetrical base, finely often doubly serrate with straight glandular teeth, and slightly divided usually only above the middle into 3 or 4 pairs of small acute lobes, about half grown when the flowers open late in May and then thin, dark yellow-green and roughened above by short white hairs and paler below, and at maturity thin, dark yellow-green and scabrate on the upper surface, pale bluish green on the lower surface, 2¼′—2½′ long, and 1¾′—2′ wide, with a slender midrib and obscure primary veins; petioles slender, slightly wing-margined at apex, occasionally glandular with minute persistent glands, 1′—1¼′ in length; leaves at the end of vigorous shoots broad-ovate, rounded at base, coarsely serrate, laterally lobed with numerous short broad lobes, often 3′ long and 2½′ wide. Flowers ¾′ in diameter, on short slender pedicels, in compact mostly 6—12-flowered corymbs; calyx-tube narrowly obconic, the lobes long, slender, acuminate, entire or occasionally slightly dentate near the middle, glabrous on the outer surface, slightly villose on the inner surface; stamens 8—10; anthers bright purple; styles 3—5. Fruit ripening and beginning to fall early in October, on short stout pedicels, in drooping usually 1—3-fruited clusters, subglobose to slightly obovoid, scarlet, lustrous, marked by pale dots, ½′—¾′ in diameter; calyx little enlarged, with a deep narrow cavity and spreading and incurved usually persistent lobes dark red on the upper side below the middle; flesh thick, yellow-green and acid; nutlets 3—5, usually 4, gradually narrowed and rounded at the ends, ridged on the back with a broad high grooved ridge, about ¼′ long.
An oval-headed tree, 20°—30° high, with a short trunk sometimes 8′—10′ in diameter, covered with dark gray scaly bark, and stout zigzag often contorted branchlets dark orange-green and marked by large pale lenticels when they first appear, becoming light chestnut-brown and lustrous in their first season and dull red-brown the following year, and armed with few stout slightly curved chestnut-brown shining spines 1′—1½′ long, persistent and becoming branched on old stems.
Distribution. Rich hillsides, Kittanning, Armstrong County, and on the flood plain of the Allegheny River at Whiskey Hollow across the river from Kittanning, and Linesville, Crawford County, Pennsylvania.
VII. TENUIFOLIÆ.
CONSPECTUS OF THE ARBORESCENT SPECIES.
Stamens 5—10. Corymbs villose. Leaves oblong-ovate; stamens usually 5; anthers pink; fruit obovoid to short-oblong.61. [C. apiomorpha] (A). Leaves oblong-obovate; stamens 10; anthers reddish purple; fruit obovoid to subglobose.62. [C. paucispina] (A). Corymbs glabrous; leaves oval or ovate; stamens usually 5; anthers dark reddish purple; fruit short-oblong.63. [C. pentandra] (A). Stamens usually 20. Corymbs villose. Leaves broad-ovate to obovate or rarely oval; fruit short-oblong to obovoid.64. [C. lucorum] (A). Leaves rhombic to broad-ovate or rarely obovate; fruit ellipsoidal.65. [C. lacera] (C). Corymbs glabrous. Leaves ovate; anthers pale rose color; fruit subglobose to broad-obovoid, dark red.66. [C. depilis] (A). Leaves ovate; stamens 15—20; anthers dark rose color; fruit subglobose.67. [C. basilica] (A).
61. [Cratægus apiomorpha] Sarg.
Leaves oblong-ovate, acuminate, rounded or rarely cuneate at the entire often unsymmetrical base, finely doubly serrate above with slender glandular teeth, and slightly divided above the middle into 4 or 5 pairs of triangular acute lobes, about half grown when the flowers open early in May and then membranaceous, light yellow-green and tinged with red or bronze color, and covered above with short white hairs and pale and glabrous below, and at maturity thick and firm in texture, dark blue-green and smooth and lustrous or sometimes dull and scabrate on the upper surface, pale blue-green on the lower surface, 1½′—2¼′ long, and 1⅛′—1½′ wide, with a stout midrib, and primary veins arching obliquely to the point of the lobes; petioles slender, slightly winged at the apex, often sparingly glandular, ⅜′—1′ in length; leaves at the end of vigorous shoots often 3′ long. Flowers ½′—¾′ in diameter, on short villose or glabrous pedicels, in compact many-flowered usually hairy corymbs, their bracts and bractlets linear to oblong-obovate, glandular-serrate with stipitate dark red or purple glands, turning red before falling, mostly persistent until after the flowers open; calyx-tube narrowly obconic, glabrous, the lobes abruptly narrowed at base, slender, acuminate, entire or sparingly glandular; stamens 5—10, usually 5; anthers pink; styles 3—5, surrounded at base by tufts of pale hairs. Fruit ripening early in September and soon falling, on slender pedicels, in few-fruited drooping clusters, obovoid or rarely short-oblong, bright reddish purple, marked by small scattered pale dots, ⅜′—⅝′ long, and ¼′—⅓′ in diameter; calyx much enlarged, with spreading lobes, their tips mostly deciduous from the ripe fruit; flesh thin, yellow, juicy, pleasantly acid; nutlets 3—5, thin, rounded and ridged on the back with a low ridge, about ¼′ long.