542 TREES OF NORTH AMERICA 



or 3, surrounded at the base by a narrow ring of pale tomentum. Fruit ripening early in 

 October and becoming very succulent just before falling, on long slender pedicels, in droop- 

 ing many-fruited glabrous or puberulous clusters, subglobose to short-oblong, scarlet, lus- 

 trous, \' in diameter; calyx prominent, with an elongated narrow tube, and reflexed villose 

 lobes bright red toward the base on the upper side ; flesh thick, bright yellow, sweet and 

 succulent; nutlets usually 3, or 2, \' long, broad and flat, full and rounded at the ends, 

 ridged on the back with a prominent rounded ridge, the ventral cavities broad and deep. 

 A tree, occasionally 30 high, with a tall trunk 10'-12' in diameter, covered with dark 

 brown scaly bark, stout spreading or ascending branches forming a broad rather open 





Fig. 498 



symmetrical head, stout zigzag glabrous red-brown or gray-brown lustrous branchlets 

 armed with straight or slightly curved thick chestnut-brown spines usually about 2' long, 

 and winter-buds sometimes \' in diameter. 



Distribution. Rich forest glades, or the margins of woods, usually in low rich soil; 

 eastern New York, near Albany, Albany County; western New York (Munroe and Liv- 

 ingston Counties); southern Ontario (La Salle on the Niagara River and near London); 

 northwestern Ohio (Oak Harbor, Ottawa County); southern Michigan; common; Illinois 

 (Calumet, Cook County, and Manley, Fulton County); southern Wisconsin (Waukesha, 

 Waukesha County and near Madison, Dane County). 



147. Crataegus illinoiensis Ashe. 



Leaves broad-obovate to oval, rounded or rarely acute at the wide apex, broad-cuneate 

 and entire at the base, coarsely and often doubly serrate above, with straight or incurved 

 teeth tipped with minute deciduous glands, and sometimes slightly and irregularly divided 

 toward the apex into short acute lobes, when they unfold covered below with a thick coat 

 of hoary tomentum and pilose above, and when the flowers open about the 20th of May 

 membranaceous, yellow-green, covered above with short'pale hairs and pubescent below, and 

 at maturity thick and firm in texture, dark green and glabrous on the upper surface, pale 

 and pubescent on the lower surface, particularly on the stout midrib and 4-6 pairs of pri- 

 mary veins deeply impressed on the upper side, 2'-2|' long, and H'-2' wide; petioles stout, 

 slightly winged toward the apex, generally bright red below the middle after midsummer, 

 and usually \'-\' in length; leaves at the end of vigorous shoots usually elliptic, acute or 

 acuminate, more coarsely dentate and more often lobed, sometimes decurrent nearly to the 

 base of the stout petiole, 3'-4' long, and 2|'-3' wide. Flowers about f ' in diameter, on 

 slender slightly hairy pedicels, in broad compact villose corymbs; calyx-tube narrowly 



