Distribution. Limestone ridges near the St. Lawrence River at Châteaugay, Caughnawaga, and La Tortue in the Province of Quebec.
79. [Cratægus corusca] Sarg.
Leaves ovate, acute, truncate, rounded or slightly cordate at the broad base, regularly divided into 4 or 5 pairs of short acute lateral lobes, and doubly serrate with straight glandular teeth, when they unfold covered above with short soft pale hairs and glabrous below, about a third grown when the flowers open the middle of May, and at maturity thin but firm and rigid in texture, glabrous, dark yellow-green, bright and lustrous above, pale yellow-green below, 2′—2½′ long and wide, with a slender pale midrib and primary veins; petioles slender, villose early in the season, soon becoming glabrous and dark red below the middle, 1½′—2½′ in length; leaves at the end of vigorous shoots frequently divided into narrow acute lateral lobes, and often 3½′—4′ long and wide. Flowers ¾′ in diameter, on stout villose pedicels, in compact narrow many-flowered corymbs covered with matted pale hairs; calyx-tube narrowly obconic, glabrous, or villose toward the base, the lobes narrowed from a broad base, acute, coarsely glandular-serrate, villose on the inner surface; stamens 20; anthers small, pale pink; styles 4 or 5. Fruit beginning to ripen and fall about the middle of September and continuing to fall until the end of October, on stout pedicels, in glabrous few-fruited clusters, short-oblong to obovoid, bright cherry-red, lustrous, marked by dark scattered pale dots, ⅝′—¾′ long, and ½′—⅝′ in diameter; calyx little enlarged, the lobes slightly glandular-serrate, usually deciduous before the fruit ripens; flesh thick, yellow, dry and mealy; nutlets 4 or 5, dark-colored, rounded on the back, ¼′ long.
A tree, 18°—20° high, with a tall trunk 8′—10′ in diameter, wide-spreading branches forming a handsome symmetrical head, and stout branchlets dark green and coated with matted pale hairs when they first appear, soon becoming light red-brown, light orange-brown and lustrous in their second year, and armed with thick nearly straight bright chestnut-brown spines often 3′ in length.
Distribution. Sandy shores of Lake Zurich, Lake County, Illinois.
80. [Cratægus Kelloggii] Sarg.
Leaves broad-ovate to suborbicular, rounded and often short-pointed at apex, rounded, broadly cuneate or truncate at the entire base, coarsely serrate above with straight gland-tipped teeth, and divided usually only above the middle into several short broad acute or acuminate lobes, about half grown when the flowers open during the last week of April and then thin, yellow-green, covered above with short pale hairs and pubescent below on the midrib and veins, and at maturity thin but firm in texture, dark yellow-green, glabrous and smooth on the upper surface, pale and glabrous on the lower surface with the exception of a few hairs near the base of the thin yellow midrib and of the 4 or 5 pairs of slender prominent primary veins arching to the point of the lobes, 2′—2½′ long, 1¾′—2½′ wide, and often broader than long; petioles slender, slightly winged at apex, villose while young with long matted white hairs, becoming glabrous, ¾′—1′ in length. Flowers ⅝′ in diameter, on slender hairy pedicels, in compact 5—10-flowered villose corymbs, with oblong-obovate to linear acuminate glandular bracts and bractlets mostly persistent until the flowers open; calyx-tube broadly obconic, slightly hairy at base, glabrous above, the lobes slender, acuminate, glandular with minute dark red stipitate glands, or entire, glabrous on the outer surface, sparingly villose on the inner surface; stamens 20; anthers pale rose color; styles 5. Fruit ripening at the end of September and soon falling, on long slender glabrous pedicels, in few-fruited drooping clusters, subglobose to short-ovoid, bright yellow, marked by many small pale dots, ¾′—1′ in diameter; calyx small, with spreading reflexed lobes slightly villose toward the apex and often deciduous from the ripe fruit; flesh thin, yellow, dry and mealy; nutlets 5, rounded and very slightly grooved on the back, about ⅜′ long.
A tree, 20°—25° high, with a tall trunk 4′—5′ in diameter, covered with nearly black deeply furrowed bark, erect branches, and nearly straight branchlets dark green tinged with red and slightly villose when they first appear, bright red-brown and lustrous at the end of their first season, becoming dark dull reddish brown the following year, and unarmed, or armed with slender nearly straight bright chestnut-brown shining spines usually about 1′ long.