ROSACEiE 



411 



above, paler and tomentose below along the slender midribs and 3 or 4 pairs of very 

 obscure primary veins, 2'-2^' long, I'-ll^' wide; their petioles slender, more or less 

 wing-margined toward the apex, tomentose early in the season, becoming glabrous 

 or pubescent, ^'-1' long; on leading shoots often broadly rhomboidal to obovate, 

 acuminate, frequently deeply 3-lobed or divided into 2 oj 3 pairs of short lateral 

 lobes, usually 2^'-3' long. Flowers cup-shaped, \' in diameter, on long slender 

 pedicels thickly coated with matted white hairs, in broad lax many-flowered com- 

 pound hairy corymbs; calyx-tube narrowly obconic, villose, the lobes linear, acumi- 

 nate, entire, slightly villose, tipped with minute dark glands; stamens usually 10, 

 occasionally 12, 15, or 20; anthers small, deep bright red; styles 5. Fruit ripening 

 the middle of October, on slender pubescent pedicels, in drooping many-fruited clus- 

 ters, subglobose to short-oblong, full and rounded at the ends, bright orange-red. 



lustrous, marked by occasional large pale dots, about ^' long; calyx prominent, with 

 a short villose tube, and spreading erect hairy lobes often deciduous from the ripe 

 fruit; flesh thin, yellow, dry and mealy; nutlets 5, thin, acute at the narrowed ends, 

 rounded and sometimes slightly grooved on the back, about -^^' long. 



An unarmed tree, sometimes 25 high, with a tall trunk 8-12' in diameter, covered 

 with light or dark brown bark separating freely into thin narrow scales, stout spread- 

 ing branches forming a broad flat-topped handsome head, and slender nearly straight 

 branchlets coated until after the flowering time with thick hoary tomentum, bright 

 red-brown and puberulous during their first season, becoming light or dark dull 

 reddish brown the following year. 



Distribution. Common in low woods in rich moist soil near Fulton, Arkansas, in 

 the valley of the Red River. 



V. PRUINOS-51. 



Leaves elliptical ; fruit subglobose, green, and pruinose when fully grown, becoming dark 

 purple-red and very lustrous ; anthers large, deep rose color. 46. C. pruinosa (A, C). 



Leaves ovate, acute or acuminate ; fruit oblong, dull russet green ; anthers small, light rose 

 color. 47. C. Georgiana (C). 



46. Crataegus pruinosa, K. Koch. 



Leaves elliptical, acute, gradually or abruptly narrowed and cuneate at the en- 

 tire base, irregularly and often doubly serrate above, with glandular straight or 



