. 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. 478 The Thorn Trees forming a wide, irregular crown; the bark is light gray, scaly; the twigs are red- brown, with numerous curved spines from 3 to 5 cm. long. The leaves are elliptic-ovate, 4 to 8 cm. long, 3 to 7 cm. wide, pointed or abruptly long-pointed at the apex, ab- ruptly wedge-shaped or rounded at the base, doubly toothed and lobed above, thin, yellow-green, slightly hairy above when yoimg, becoming rough, smoot
. 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. 478 The Thorn Trees forming a wide, irregular crown; the bark is light gray, scaly; the twigs are red- brown, with numerous curved spines from 3 to 5 cm. long. The leaves are elliptic-ovate, 4 to 8 cm. long, 3 to 7 cm. wide, pointed or abruptly long-pointed at the apex, ab- ruptly wedge-shaped or rounded at the base, doubly toothed and lobed above, thin, yellow-green, slightly hairy above when yoimg, becoming rough, smooth beneath; leaf-stalks slightly winged, 2 to 4 cm. long. The flowers are about 15 mm. wide, in many-flowered, hairy corymbs; calyx-tube long-hairy below, the lobes smooth on the under surface, long-hairy on the upper surface, glan- dular-toothed, with small teeth; sta- mens 7 to 10; anthers small, dark rose; styles 2 or 3. The fruit ripens about Fig. 435. —Rough-leaved Thorn. j^g middle of October; it is subglobose to short-oblong, about 15 mm. thick, scarlet; its calyx-lobes are erect or incurved; flesh thick, yellow; pedicels hairy; it contains 2 or 3 nutlets 7 to 8 mm. long, with strongly ridged backs, and with shallow longitudinal pits on the inner face, the nest of nutlets 7 to 8 mm. 46. BRAINERD'S THORN —CrataegM Braineidi Sargent Cratcegus Schuettei Ashe. Cratmgns ForbescB Sargent Brainerd's thorn is common in western New England and ranges south to Pennsylvania and west to northern Illinois and Wisconsin. It is commonly a roimd- topped shrub, but often a tree 6 meters high, with ascending branches; the scaly bark is gray-brown, the twigs reddish broA/vn, smooth, and armed with chestnut- brown spines from 3 to 6 cm. long. The leaves are ovate, 3 to 9 cm. long, 2 to 6 cm. wide, broadly wedge-shaped at the base, pointed at the apex, doubly toothed, with 4 to 6 pairs of short-pointed lobes, slightly hairy on the upper surface when young, rather thin, bright gree
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