412 TREES OF NORTH AMERICA 



Distribution. Low rich woods at the marble quarry near Winnfield, Winn Parish, 

 Louisiana. 



Distinct in the Crus-galli Group in its head of slender pendulous branches. 



13. Crataegus arborea Beadl. 



Leaves obovate to oblanceolate, narrowed, acute or rounded at apex, gradually nar- 

 rowed and concave-cuneate at the long tapering entire base, and finely serrate above the 

 middle with minute straight teeth, nearly fully grown when the flowers open the middle of 

 April and then glabrous, and at maturity subcoriaceous, bright green and lustrous above, 

 pale below, If '-2' long, and about f ' wide; turning in the autumn orange, yellow, and brown; 



Fig. 365 



petioles ^'-f in length; leaves at the end of vigorous shoots coarsely serrate, occasionally 

 slightly lobed, and often 3' long and 1|' wide. Flowers \' in diameter, on slender pedicels, 

 in broad many-flowered glabrous corymbs; calyx narrowly obconic, glabrous, the lobes 

 slender, elongated, acuminate, slightly serrate; stamens 20; anthers pale yellow; styles 

 usually 2. Fruit ripening in September and October, globose to subglobose, \'-\' in diame- 

 ter, red, the calyx enlarged, with elongated coarsely glandular-serrate reflexed lobes; nutlets 

 usually 2, about j' long. 



A tree, sometimes 30 high, with a trunk 12'-18' in diameter, spreading or ascending 

 branches forming a broad handsome head, and branchlets orange-green in their first season, 

 becoming reddish in their first winter, and usually unarmed. 



Distribution. In open woods usually in clay soil near Montgomery, Montgomery 

 County, Alabama. 



14. Crataegus uniqua Sarg. 



Leaves oblong-obovate, acute or occasionally rounded at apex, gradually narrowed to 

 the long cuneate base, and finely serrate above the middle with straight or incurved glandu- 

 lar teeth, more than half grown and sparingly villose on the upper side of the midrib when 

 the flowers open the middle of April, and at maturity glabrous, dark green and lustrous 

 above, paler below 7 , I'-l J' long, and ^'-f ' wide, with a thin midrib, and slender primary 

 veins mostly within the parenchyma; petioles slender, glabrous, %'-%' in length ; leaves at 

 the end of vigorous shoots broad-obovate, rounded or acute at apex, coarsely serrate, 2'-2|' 

 long, and I'-lJ' wide. Flowers \'-\' in diameter, on slender pedicels, in mostly 5-8-flow- 

 ered glabrous corymbs; calyx-tube narrowly obconic, the lobes short and broad, acuminate, 

 entire or slightly dentate near the middle, sparingly villose on the inner surface; stamens 

 20; anthers small, nearly white; styles 2 or 3. Fruit on slender drooping pedicels, short- 

 oblong, rounded at the ends, dull red, about \' long and \ ' thick; calyx prominent, with 



