ROSACE^E 447 



A tree, sometimes 30 high, with a tall trunk 12'-18' in diameter, covered with dark red- 

 brown scaly bark, thin erect and spreading branches forming a compact rather narrow 

 head, and slender glabrous branchlets marked by occasional dark lenticels, dark green more 

 or less tinged with red when they first appear, soon becoming dark chestnut-brown and 

 very lustrous, and bright reddish brown in their second year, and usually unarmed. 



Distribution. St. Louis County, Missouri, and rich bottom-lands of the Mississippi 

 River, St. Clair County, Illinois; not common. , 



51. Cratsegus ingens Beadl. 



Leaves obovate-oval or ovate, broadly or acutely cuneate at the entire base, crenately 

 serrate above, and often slightly lobed toward the acute apex, about half grown when the 

 flowers open at the end of April or early in May and then roughened above by short rigid 

 hairs and villose below along the midrib, and the remote slender veins extending obliquely 



Fig. 403 



to the point of the lobes, and at maturity subcoriaceous, dark green and scabrate on the 

 upper surface, paler and nearly glabrous on the lower surface, !%'-%' long, and 1|'-1|' wide; 

 turning in the autumn yellow, orange, red, or brown; petioles stout, narrowly wing-mar- 

 gined to the middle, pubescent while young, becoming glabrous, about f ' in length; leaves 

 at the end of vigorous shoots more deeply lobed and often 3'-3|' long, and 2' wide, with a 

 stout broad-winged petiole sometimes l' long. Flowers '-f ' in diameter, on slender hairy 

 pedicels, in many-flowered compact hairy corymbs; calyx narrowly obconic, coated, espe- 

 cially toward the base with matted pale hairs, the lobes slender, elongated, acute, glandu- 

 lar with bright red glands, glabrous on the outer, sparingly villose on the inner surface; 

 stamens 20; anthers deep rose color; styles 3-5. Fruit ripening in October, on stout puber- 

 ulous pedicels, in few-fruited drooping clusters, globose to subglobose, red, about f ' in 

 diameter; calyx little enlarged, with reflexed appressed nearly glabrous lobes; nutlets 3-5, 

 rounded or slightly grooved and ridged on the back, j' long. 



A tree, sometimes 25 high, with a trunk a foot in diameter, spreading branches forming 

 a wide round-topped head, and unarmed branchlets covered at first with matted pale hairs, 

 soon becoming glabrous, dark chestnut-brown. 



Distribution. Moist woods and the low banks of streams; southeastern Tennessee and 

 northwestern Georgia. 



52. Crataegus penita Beadl. 



Leaves broad-obovate, oval, or ovate, acute or acuminate at apex, broadly or acutely 

 concave-cuneate at the entire base, sharply often doubly serrate above with glandular 



