372 



TREES OF NORTH AMERICA 



with short broad acute lobes, convex by the hanging down of the margins, 3'-4' 

 long, and 2'-3' wide, their stipules semiluuate, coarsely glandular-serrate, often |' 

 long. Flowers |' in diameter, on slender pedicels, in wide many-flowered slightly 

 villose corymbs, with large glandular bracts and bractlets; calyx-tube narrowly 

 obconic, more or less villose, the lobes elongated, acute, and coarsely serrate, with 

 stipitate dark red glands, villose on the inner surface; stamens usually 10, occasion- 

 ally 12-15; anthers small, dark purple; styles 2 or 3. Fruit on slender pedicels 

 often %' long, in broad many-fruited drooping clusters, short-oblong to subglobose, 

 full and rounded at the ends, covered until nearly fully grown with long soft pale 

 hairs, and at maturity orange-red marked by many small dark dots, '-1' long; calyx- 

 lobes linear-lanceolate, erect and incurved, coarsely glandular-serrate above the 

 middle, dark red on the upper side toward the base; flesh very thick, firm and 

 hard, pale green, dry and sweet; nutlets 2 or 3, rounded and prominently ridged on 

 the back, ' long. 



A tree, 20-25 high, with a trunk 10'-12' in diameter, stout wide-spreading 

 branches forming a broad symmetrical round-topped rather open head, and stout 

 branchlets covered at first with soft matted pale hairs, soon glabrous, light orange- 

 green, becoming ashy gray in their second season, and armed with numerous very 

 slender straight or slightly curved chestnut-brown shining spines 2'-2^' long. 



Distribution. Rich woodlands near Alton, Missouri, and ou the bottom-lands of 

 the Mississippi River in Illinois opposite St. Louis. 



5. Crataegus regalis, Beadl. 



Leaves oval to elliptic, acute or acuminate, gradually narrowed and concave- 

 cuneate at the entire base, coarsely and often doubly serrate above, with acute 

 straight or incurved teeth, when they unfold tinged with red and sparingly villose 



above and on the midribs below, soon glabrous, nearly fully grown when the flowers 

 open at the end of April, becoming at maturity thick and firm or subcoriaceous, 

 bright green and lustrous above, pale below, l'-2' long, l'-l' wide, with stout 

 yellow midribs and primary veins, turning in the autumn yellow, orange, and brown; 

 their petioles stout, about 1' long, broadly winged, reddish brown toward the base; on 

 vigorous shoots broadly oval, coarsely serrate, mostly slightly incisely lobed, 3'-4' 



