. North American trees : being descriptions and illustrations of the trees growing independently of cultivation in North America, north of Mexico and the West Indies . Trees. 452 The Thorn Trees the bark is dark gray, scaly; the young twigs are covered with matted white hairs but become smooth with age and are armed occasionally with slender red- brown spines. The leaves are oblanceolate- obovate, 2 to 6 cm. long, i to 4 cm. wide, pointed or short-pointed at the apex, strongly wedge-shaped at the base, finely toothed, rough hairy and shining above, pale and hairy below, particularly along the
. North American trees : being descriptions and illustrations of the trees growing independently of cultivation in North America, north of Mexico and the West Indies . Trees. 452 The Thorn Trees the bark is dark gray, scaly; the young twigs are covered with matted white hairs but become smooth with age and are armed occasionally with slender red- brown spines. The leaves are oblanceolate- obovate, 2 to 6 cm. long, i to 4 cm. wide, pointed or short-pointed at the apex, strongly wedge-shaped at the base, finely toothed, rough hairy and shining above, pale and hairy below, particularly along the slender midrib and veins, dark green, half leathery; leaf-stalks densely woolly- hairy, becoming smoother, winged above, about i cm. long. The Fig. 395. —Barbeny-leaved Haw. flowers are about 15 mm. wide in long-hairy, few-flowered corymbs; calyx-tube long-hairy, the lanceolate long- pointed lobes shghtly hairy, remotely toothed; stamens about 20; anthers yellow; styles 2 to 3. The fruit ripens late in October; it is subglobose, about 10 mm. thick, orange and red, slightly hairy, calyx-lobes spreading; flesh thin, yellow; it contains 2 to 3 nutlets strongly ridged on the back, the nest of nutlets about 6 mm. long and 6 mm. 7. PHILADELPHIA THORN —Cratsegns pansiaca Ashe Eastern Pennsylvania is the home of this species. It is a tree from 6 to 8 meters high, with spreading branches forming a flat or round crown; the bark is dark brown, scaly; the young twigs are orange-green, becoming grayj and bear numerous stout, curved, light Jjrown spines from 4 to 6 cm. long; the trunk sometimes has branched spines 3 dm. long. The leaves are oblanceolate- obovate, 3 to 6 cm. long, to 4 cm. wide, sharp-pointed to rounded at the apex, wedge-shaped at the base, doubly toothed above, dark yellow-green with impressed veins on the upper surface, paler be- neath, slightly hairy when young, becoming smooth except on the veins beneath, thin; leaf-stalks wing-margined, i to 2 cm. long,.
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