428 



TREES OF NORTH AMERICA 



below on the slender midrib and veins, and at maturity subcoriaceous, dark yellow-green 

 lustrous and scabrate on the upper surface, paler and still villose on the lower surface, 

 2j'-2^' long, and If '-2' wide; petioles stout, slightly hairy on the upper side, occasion- 

 ally glandular, and f '-f ' in length. Flowers f ' in diameter, on slender villose pedicels, in 

 compact villose usually 6-8-flowered corymbs; calyx-tube narrowly obconic, glabrous, the 

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

 stamens 20; anthers pink; styles usually 3. Fruit ripening at the end of September, on 

 slender reddish slightly hairy pedicels, in few-fruited erect or spreading clusters, subglobose 

 to short-oblong, truncate at base, rounded at apex, dull orange-red, about |' in diameter: 



Fig. 383 



calyx prominent with a broad deep cavity, and spreading coarsely serrate persistent lobes 

 villose on the upper surface; flesh thick, dry and mealy; nutlets 3, gradually narrowed and 

 rounded at the ends, ridged on the back with a high deeply grooved ridge, about ^' long 

 and i'-i' wide. 



A tree,30-35 high, with a tall trunk often 1 in diameter, large ascending and spreading 

 branches forming an open head, and stout nearly straight glabrous branchlets, light orange- 

 green and marked by small pale lenticels when they first appear, becoming light chestnut- 

 brown and lustrous in then* first season, and dull red-brown the following year, and armed 

 with slender straight .or slightly curved dark chestnut-brown lustrous spines l'-l|' long. 



Distribution. Woods in low moist soil, near London, Ontario. 

 32. Crataegus verruculosa Sarg. 



Leaves obovate to rhombic, acute or rarely rounded at apex, cuneate and entire at base, 

 and sharply often doubly serrate above with straight or incurved glandular teeth, when 

 they unfold dark red, covered above by short pale hairs and below by long matted white 

 hairs most abundant on the midrib and veins, about half grown when the flowers open from 

 the 1st to the 10th of May and then thin, dark yellow-green and scabrate on the upper 

 surface, and paler and pubescent on the lower surface, and at maturity subcoriaceous, 

 dark green, lustrous and nearly smooth above, pale and still pubescent below on the stout 

 midrib and conspicuous primary veins extending very obliquely toward the end of the leaf, 

 l|'-2' long, and I'-l^' wide; petioles stout, wing-margined at apex, at first villose, becoming 

 pubescent or puberulous, j'-f in length; leaves at the end of vigorous shoots often broad- 

 ovate to oval, sharply doubly serrate with straight teeth, sometimes slightly lobed above 

 the middle with short acute lobes, and frequently 3' long and 2' wide. Flowers ' in di- 

 ameter, on long slender villose pedicels, in broad lax compound 6-12 usually 9-flowered 

 villose corymbs; calyx-tube broadly obconic, thickly covered with matted pale hairs, the 

 lobes gradually narrowed from a broad base, slender, acute, tinged with red at apex, spar- 



