398 



TREES OF NOKTH AMEKICA 



coarsely glandular-serrate stipules frequently ^' in length. Flovirers about |' in 

 diameter, in compact many-tiowered thick-branched tomentose coi'ynibs; calyx-tube 

 narrowly obconic and tomentose, the lobes narrow, acuminate, finely glandular-ser- 

 rate, villose; stamens 10; anthers small, pale yellow; styles 5, surrounded at the 

 base by a broad ring of hoary tomentum. Fruit ripeinng early in October, on 



stout pubescent pedicels, in few-fruited spreading or drooping clusters, subglobose 

 or occasionally slightly obovate, full and rounded and puberulous at the ends, 

 dull orange-red, marked by large pale dots, about ^' in diameter; calyx broad, the 

 lobes enlarged, coarsely glandular-serrate, reflexed, often deciduous before the fruit 

 ripens; flesh thin, dry and mealy; nutlets 5, prominently ridged on the back, with 

 a high rounded ridge, dark brown, ^' long. 



A tree, 18-20 high, with a trunk 6'-8' in diameter, with thin dark brown or 

 nearly black bark separating freely into small plate-like scales, and often armed with 

 thin much-branched spines frequently T-S' long, small erect branches forming a 

 wide open head, and branchlets coated when they first appear with hoary tomentum, 

 dull red-brown, villose or pubescent during their first season, and furnished with stout 

 straight bright red-brown shining spines l^'-2' long. 



Distribution. Low rich soil inundated during several weeks in winter, among 

 Oaks and Hickories; near Allenton, Missouri. 



33. Crataegus pratensis, Sarg. 



Leaves oblong-obovate, acute or rounded at the apex, gradually narrowed below 

 from near the middle to the cuneate and entire base, sharply and often doubly ser- 

 rate usually only above the middle, with straight or incurved teeth tipped early in the 

 season with minute dark red caducous glands, and often more or less deeply divided 

 toward the apex into short broad acute lobes, when they unfold bright bronze-yellow 

 or dark red, and covered with short pale hairs, almost smooth and nearly fully grown 

 when the flowers open at the end of May, and at maturity glabrous, thick and firm, 

 dark green and lustrous above, pale below, 1^-2' long, V-1^' wide, with thin midribs 

 and 4 or 5 pairs of primary veins extending obliquely toward the end of the leaf and 

 raised and prominent below; their petioles slender, glabrous, more or less winged 

 toward the apex, usually about ^ long; on vigorous shoots often oval or broadly ovate, 

 frequently 3' long and 21' wide, with foliaceous lunate stalked coarsely glandular- 



