ROSACES 437 



thick dark brown furrowed bark, large spreading and ascending branches forming 

 an open irregular head, and stout branchlets covered at first with long matted white 

 hairs, light orange-brown, lustrous, and puberulous at the end of their first season, 

 becoming ashy gray or light grayish brown the following year, and armed with very 

 numerous stout nearly straight dark purple shining spines usually about 2^' long. 

 Distribution. Dry upland woods, valley of the Red River near Fulton, Arkansas; 



** Stamens 10. 

 -+ Anthers yellow. 



70. Crataegus Arnoldiana, Sarg. 



Leaves broadly ovate or rarely oval, acute, regularly divided above the middle 

 into numerous short acute lobes, and coarsely doubly serrate, with straight glandular 

 teeth except at the rounded truncate or occasionally cuneate base, when they unfold 



coated with dense matted pale hairs, about half grown when the flowers open at the 

 end of May or early in June and then roughened above by stout stiff hairs and soft- 

 pubescent below, and at maturity membranaceous, smooth, very dark green and lus- 

 trous above, paler below, 2'-3' long and broad, slightly villose on the under side of 

 the slender midribs and thin prominent remote primary veins extending to the points 

 of the lobes; their petioles slender, at first densely villose, becoming puberulous, 

 f'-l' long. Flowers about |' in diameter, on slender pedicels, in broad compound 

 many-flowered tomentose corymbs; calyx- tube broadly obconic, densely tomentose, 

 the lobes narrow, elongated, acuminate, glandular-serrate, villose on both surfaces; 

 stamens 10; anthers large, pale yellow; styles 3-5, usually 3 or 4, surrounded at 

 the base by abroad ring of thick hoary tomentum. Fruit ripening about the middle 

 of August and mostly falling before the first of September, on stout pedicels, in erect 

 spreading or rarely drooping few-fruited villose clusters, subglobose but rather 

 longer than broad, bright crimson marked by many large pale dots, villose, par- 

 ticularly toward the ends, with long scattered white hairs, ' long; calyx little 

 enlarged, with elongated coarsely glandular-serrate wide-spreading lobes often de- 

 ciduous before the fruit ripens; flesh thick, bright yellow, subacid; nutlets 3 or 4, 



