ROSACEA 



429 



A tree, 18-30 high, with a trunk 6'-8' in diameter, stout spreading branches 

 forming a broad round-topped symmetrical head, and branchlets dark green and 

 covered with matted pale hairs when they first appear, soon becoming light orange- 

 brown and very lustrous, and armed with numerous stout straight or slightly 

 curved dark chestnut-brown shining spines 2'-2i' long. 



Distribution. Limestone ridges near the St. Lawrence River at Chateaugay, 

 Caughnawaga, and La Tortue in the Province of Quebec. 



62. Crataegus Berlandieri, Sarg. 



Leaves oblong-obovate or oval, acute or acuminate, gradually narrowed, cuneate 

 and entire below the middle, unequally divided above into numerous acute or 

 acuminate lobes, and coarsely and often doubly serrate above, with broad straight 

 or incurved glandular teeth, when the flowers open from the middle to the end of 



March coated above with short pale caducous hairs and below with thick hoary 

 tomentum, and at maturity thin and firm in texture, glabrous, dark green, very 

 lustrous on the upper surface, pale and pubescent on the lower surface, and usually 

 about 3' long and 2' wide, with slender midribs, remote primary veins extending to 

 the points of the lobes, conspicuous secondary veins and reticulate veinlets; their 

 petioles more or less winged toward the apex, tomentose at first, becoming pubes- 

 cent, ^'-f long; on vigorous shoots often 5' long and 3' wide, with rounded acute 

 lobes, and foliaceous lunate coarsely glandular-dentate stipules frequently ^' in 

 length. Flowers ^' in diameter, on stout elongated hoary-tomentose pedicels, in 

 broad loose many-flowered compound tomentose corymbs, with oblong-obovate to 

 lanceolate finely glandular-serrate villose conspicuous bracts and bractlets; calyx- 

 tube broadly obconic, covered with thick pale tomentum, the lobes broad, acute, very 

 coarsely glandular-serrate, tomentose on the outer surface and villose on the inner 

 surface; stamens 20, anthers yellow; styles 5, surrounded at the base by tufts of 

 white hairs. Fruit ripening after the middle of October, on slender elongated pedi- 

 cels, in loose drooping clusters, short-oblong to subglobose, scarlet, about ^' long; 

 calyx much enlarged, with coarsely serrate villose lobes erect and persistent; flesh 

 thin, yellow, dry and mealy; nutlets 5, rounded and occasionally obscurely grooved 

 on the back, about ^' long. 



