. 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. Fig. 398. — Large-fruited Thorn. 9. CAUGHNAWAGA THORN — Crataegus suborbiculata Sargent This thorn occurs about the limestone ridges of the Caughnawaga Indian reservation and on the island of Mon- treal, Quebec. It is a tree from 5 to 6 meters high, with spreading branches, forming a broad flat-topped crown; the twigs are smooth and are armed with straight or curved chestnut-brown spines, from 3 to 5 cm. long. The leaves

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. 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. Fig. 398. — Large-fruited Thorn. 9. CAUGHNAWAGA THORN — Crataegus suborbiculata Sargent This thorn occurs about the limestone ridges of the Caughnawaga Indian reservation and on the island of Mon- treal, Quebec. It is a tree from 5 to 6 meters high, with spreading branches, forming a broad flat-topped crown; the twigs are smooth and are armed with straight or curved chestnut-brown spines, from 3 to 5 cm. long. The leaves arc ovate-orbicular, from 2 to 7 cm. long, and from 2 to 6 cm. wide, the apex pointed, the base broadly wedge-shaped, doubly toothed or often lobed above the middle, thin, smooth with impressed veins and dull ^^°- 399- — Caughnawaga Thorn. dark green above, paler beneath; leaf-stalks winged above, glandular, i to 2 cm. long. The flowers are about 2 cm. broad in several-flowered smooth corymbs, calyx-lobes linear, long-pointed, with remote glandular teeth; stamens about 20; anthers rose; styles 4 or 5. The fruit ripens very late, is subglobose, about 2 cm. thick, dull green becoming tinged with red; flesh yellow, dry and hard; calyx- lobes spreading; it contains 4 or 5 nutlets from 6 to 7.5 mm. long, the nest from 8 to 10 mm. thick, the nutlets slightly ridged on the back.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Britton, Nathaniel Lord, 1859-1934; Shafer, John Adolph. New York : H. Holt and Co.