460 



TREES OF NORTH AMERICA 



petioles slender, glandular, often somewhat winged toward the apex, l'-l' in length; 

 leaves at the end of vigorous shoots usually ovate and rounded at the broad base, mote 

 deeply lobed, and sometimes 3' long and broad. Flowers f ' in diameter, on thin pedicels, 

 in narrow compact few-flowered small villose corymbs; calyx broadly obconic, glabrous, 

 the lobes narrow, acuminate, coarsely glandular-serrate, villose on the inner surface; 

 stamens 20; anthers small, dark purple; styles 4 or 5. Fruit ripening about the middle of 

 September and soon falling, on short stout pedicels, in erect few-fruited slightly villose 

 clusters, obovoid until nearly fully grown and then short-oblong or somewhat obovoid, 

 full and rounded at the ends, crimson, lustrous, marked by small pale dots, s'-f long; 

 calyx enlarged, the lobes elongated, coarsely glandular-serrate, villose above, closely 

 appressed, often deciduous before the fruit ripens; flesh thick, yellow, dry and mealy; 

 nutlets 4 or 5, thin, rounded, and sometimes obscurely ridged on the back, about \' long. 

 A tree, 20-25 high, with a tall straight trunk 6'-8' in diameter, covered with close dark 

 red-brown bark, slender ascending branches forming a narrow open head, and thin branch- 



Fig. 416 



lets dark green and somewhat villose when they first appear, becoming dull orange-brown 

 in their first summer and ultimately dark gray-brown, and armed with straight or slightly 

 curved bright red-brown lustrous spines \'-\\' long. 



Distribution. Rich moist soil along the margins of Oak-groves on the banks of sloughs; 

 Barrington, Cook County, Illinois; near Ithaca, Thompkins County, New York. 



65. Crataegus lacera Sarg. 



Leaves rhombic to broad-ovate or rarely obovate, acute at apex, broadly cuneate and 

 entire at base, coarsely often doubly serrate above with straight glandular teeth, and divided 

 above the middle into numerous acute lobes, when they unfold coated below with thick 

 hoary tomentum and villose above, nearly fully grown when the flowers open about the 

 20th of April and then glabrous on the lower surface and covered on the upper surface with 

 short scattered pale hairs, and at maturity glabrous, light yellow-green, paler below than 

 above, thin, about 1|' long and \\' wide, with a slender yellow midrib and few remote 

 primary veins; petioles slender, villose, becoming glabrous or puberulous, slightly winged 

 at the apex, often red toward the base, \'-\' in length; leaves at the end of vigorous shoots 

 broad-ovate, often deeply 3-lobed, coarsely serrate, 3'-4' long and broad. Flowers f ' in di- 

 ameter, on slender villose pedicels, in sparingly villose few-flowered corymbs; calyx-tube 

 narrowly obconic, glabrous, the lobes linear-lanceolate, elongated, coarsely glandular-ser- 

 rate, glabrous on the outer surface, villose on the inner surface; stamens 20; anthers small, 

 rose color; styles 4 or 5. Fruit ripening toward the end of October, on short stout gla- 



