498 



TREES OF NORTH AMERICA 



obovoid, bright red or scarlet, becoming purple when fully ripe, |'-f' long, and f '- f ' in 

 diameter; calyx prominent, with erect and incurved coarsely serrate lobes; flesh thick, 

 yellow, juicy, mildly acid and edible; nutlets 3-5, usually 5, narrowed and acute at the ends, 

 rounded and very irregularly ridged on the back, j'-fV long. 



A tree, sometimes 30 high, with a trunk rarely 1 in diameter and 6-9 long, covered 

 with light gray slightly fissured smooth bark, spreading or ascending branches forming an 



Fig. 454 



oblong open head, and slender branchlets at first slightly villose, becoming glabrous, dull 

 red, and ultimately gray or olive-gray, and armed with stout nearly straight spines much 

 thickened below the middle, dark chestnut-brown and lustrous, becoming dull brown or 

 gray, and usually l'-2' long. 



Distribution. Pastures, open woods or their borders; northeastern Illinois (Lockport, 

 Will County, Wauconda, Fort Sheridan, Deerfield, Lake Forest, Highland Park, Lake 

 County) . 



103. Cratsegus Eamesii Sarg. 



Leaves oblong-ovate, acute or acuminate, concave-cuneate or rounded at the entire or 

 glandular base, sharply often doubly serrate above with straight glandular teeth, and di- 

 vided into numerous short acute lateral lobes, about half grown when the flowers open the 

 middle of May, and then membranaceous, light yellow-green and roughened above by 

 short rigid white hairs and pale and glabrous below with the exception of a few hairs on the 

 midrib, and slender primary veins arching to the point of the lobes, and at maturity sub- 

 coriaceous, glabrous, dark rather dull green and smooth above, pale yellow-green below, 

 3'-3|' long, and 2'-2|' wide; petioles slender, wing-margined above, villose at first, becom- 

 ing glabrous, l'-l' in length; leaves at the end of vigorous shoots usually rounded or trun- 

 cate at the broad base, more deeply lobed, often 3|'-4' long and 3^' wide. Flowers about f ' 

 in diameter, on slender slightly hairy pedicels, in crowded compact 5-25, usually 15-18- 

 flowered sparingly villose corymbs, with linear-obovate coarsely glandular reddish bracts 

 and bractlets, mostly deciduous before the flowers open; calyx narrowly obconic, glabrous, 

 the lobes long, slender, glandular with large bright red stipitate glands, glabrous on the 

 outer, slightly villose on the inner surface; stamens 5-10, usually 5-8; anthers deep rose- 

 purple; styles 4 or 5, surrounded at base by a narrow ring of pale pubescence. Fruit ripen- 

 ing early in September and soon falling, on stout glabrous pedicels, in large many-fruited 

 drooping clusters, short-oblong to slightly ovoid, rounded at the ends, bright cherry- 

 red, lustrous, pruinose, marked by few large dark dots, f '-f ' long, and about \' in diame- 



