488 



TREES OF NORTH AMERICA 



nutlets 3-5, narrowed and acute at the base, full and rounded at the apex, rounded 

 and obscurely ridged on the back, about ^' long. 



A tree, 20-30 high, with a straight trunk sometimes afoot in diameter, generally 

 dividing 4-5 above the ground into slender usually upright branches forming an 

 oblong or occasionally round-topped head, slender zigzag glabrous bright chestnut- 

 brown lustrous branchlets, becoming dark gray or reddish brown, and armed with 

 slender sharp spines 1^-2' long; often much smaller and sometimes a broad spread- 

 ing bush. 



Distribution. Banks of streams in rich soil; valley of the upper Potomac River, 

 Virginia, southward in the foothill region of the Appalachian Mountains to northern 



Georgia and Alabama, and westward through middle Tennessee and Kentucky to 

 the valley of the lower Wabash River, Illinois, Osage, Missouri, and southeastern 

 Missouri to northwestern Arkansas; now^here common. 



Often cultivated in the eastern states and in western Europe; hardy as far north 

 as eastern Massachusetts. 



118. Crataegus spathulata, Michx. 



Leaves spatulate to oblanceolate, rounded or acuminate and sometimes 3-lobed 

 at the apex, gradually narrowed from above the middle to the slender concave- 

 cuneate entire base, and crenately serrate above, nearly fully grown when the 

 flowers open from March to May and then sparingly villose above, with long white 

 caducous hairs, and at maturity subcoriaceous, glabrous, dark green and lustrous 

 above, paler below, reticulate-venulose, with obscure yellow midribs and primary 

 veins, l'-2' long, l'-l|' wide, and clustered at the ends of short lateral branchlets; 

 their petioles slender, wing-margined to the base, l'-\' long; on vigorous shoots often 

 deeply 3-lobed above the middle, with rounded coarsely crenately serrate lobes, 

 narrowed below into long winged petioles, l'-2' long, and l'-l|' wide, with broad 

 thick midribs often pilose on the lower surface, their stipules foliaceous, lunate, 

 sharply serrate, stalked, often i' broad. Flowers, ^' in diameter, on long slender 

 pedicels, in glabrous many-flowered narrow compound corymbs; calyx-tube broadly 

 obconic, glabrous, the lobes short, nearly triangular, almost entire, minutely glandu- 

 lar-apiculate ; stamens 20; anthers bright rose color; styles 2-5. Fruit ripening in 



