. 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. 466 The Thorn Trees tree from 6 to 8 meters high, with spreading branches forming a flat-topped head; the bark is dark gray, scaly; the young twigs are reddish, long-hairy, becoming gray and smooth, and armed with stout brown spines from 3 to 7 cm. long; the trunks are often provided with numerous, much-branched spines, from 15 to 20 cm. long. The leaves are obovate-oblong or oval, from 2 to 6 cm. long and from to 5 c
. 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. 466 The Thorn Trees tree from 6 to 8 meters high, with spreading branches forming a flat-topped head; the bark is dark gray, scaly; the young twigs are reddish, long-hairy, becoming gray and smooth, and armed with stout brown spines from 3 to 7 cm. long; the trunks are often provided with numerous, much-branched spines, from 15 to 20 cm. long. The leaves are obovate-oblong or oval, from 2 to 6 cm. long and from to 5 cm. wide, pointed at both ends, doubly toothed above, the young leaves slightly hairy above, paler beneath, with several pairs of oblique veins, becoming smooth above, yellow-green, haK leathery; leaf-stalks about i cm. long, The flowers are about 15 mm. wide, in many- flowered, long-hairy corymbs; calyx-tube hairy, the lobes lanceolate, hairy outside, nearly smooth within, toothed with gland-tipped teeth; stamens about 20; anthers large, yellow; styles 3 to 5. The fruit, ripening in September, is globose, dull red, 9 to 12 mm. thick; the flesh is yellow, dry and mealy; it contains 3 to 5 nutlets, from 5 to mm. long, the backs ridged, the nest of nutlets 6 to 8 mm. Fig. 417. — Chapman's Hill Thom. shghtly hairy, sometimes winged. 28. THIN-LEAVED THORN — Crataegus tenuifoUa Britton CratcBgus Holmesiana Ashe, not Cratagtis Holmesii Lesquereux Cratagus villipes Ashe This thom occurs on rich, moist hillsides, from the vicinity of Montreal south- ward through western New England to the Appalachian foothills of southern Virginia, and westward through south- em Ontario to northern Illinois. It is a tree sometimes 9 meters high, with stron^y ascending branches, forming a long roimded crown; the bark is pale gray-brown, scaly; the twigs are red- dish brown, smooth, and bear a few chestnut-brown spines 4 to 6 cm. long. The leaves are elliptic-ovate, to 9 cm. long, 2 to
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