544 



TREES OF NORTH AMERICA 



lanceolate, elongated, entire or very rarely furnished with occasional caducous glands; 

 stamens 10; anthers large, rose color; styles 2 or 3, surrounded at base by a narrow ring of 

 snow-white hairs. Fruit ripening at the end of September or early in October, on short 

 stout pedicels, in drooping or erect many-fruited slightly villose clusters, subglobose, bright 

 scarlet, lustrous, marked by large pale dots, '-$' in diameter; calyx enlarged, prominent, 

 with elongated entire lobes, dark red on the upper side at base, much reflexed and persist- 

 ent; flesh thin, yellow, sweet and pulpy; nutlets 2 or 3, about j' long, thick and broad, 

 rounded at the narrow ends, the ventral cavities broad and deep. 



Fig. 500 



A tree, occasionally 18-20 high, with a straight erect trunk 6'-8' in diameter, wide- 

 spreading or erect branches forming an open irregular head, and stout nearly straight or 

 occasionally slightly zigzag glabrous branchlets, lustrous and red-brown or orange-brown 

 during their first summer and ultimately dull ashy gray, and armed with stout nearly 

 straight bright chestnut-brown shining spines \\'-%\' long and often pointed toward the 

 base of the branch. 



Distribution. Low limestone ridges, Province of Quebec, south of the St. Lawrence 

 River near the Lachine Rapids, and at Caughnawaga, Rockfield, and Adirondack Junction. 



149. Crataegus macracantha Koehne. 



Leaves broad-obovate to elliptic or oval, acute or rounded and sometimes short-pointed 

 at apex, gradually or abruptly narrowed and cuneate at the entire base, coarsely and often 

 doubly serrate above with straight or incurved gland-tipped teeth, and usually divided 

 above the middle into numerous short acute or acuminate lobes, when they unfold often 

 bright red and coated on the upper surface with soft pale hairs, more than half grown when 

 the flowers open late in May and then dull yellow-green, nearly glabrous on the upper sur- 

 face and pale and puberulous on the lower surface, and at maturity coriaceous, dark green 

 and glabrous above, frequently puberulous below y on the midrib, and on the 4-G pairs of 

 slender primary veins extending obliquely to the point of the lobes and deeply impressed 

 on the upper side, usually 2'-2J' long and \\'-%! wide; petioles stout, more or less winged 

 above, frequently bright red after midsummer and usually about \' in length; leaves at the 

 end of vigorous shoots often broad and rounded at base, coarsely dentate, 3'-4' long, and 

 gi'-s' wide. Flowers about f ' in diameter, on long slender hairy pedicels, in broad more 

 or less villose corymbs; calyx-tube narrowly obconic, more or less villose or nearly glabrous, 

 the lobes long, narrow, acuminate, glandular with minute dark glands, glabrous on the 

 outer surface, slightly villose on the inner surface; stamens usually 10, occasionally 8-12; 

 anthers pale yellow; styles 2-3, surrounded at the base by a broad ring of hoary tomentum. 



