ROSACEA 



497 



erect and incurved, mostly persistent on the ripe fruit; flesh when fully ripe thick, 

 yellow, and sweet; nutlets usually 2, occasionally 3, about ^^' long and -^' wide, full 

 and rounded at the ends, rounded and conspicuously ridged on the back, with a' 

 broad low doubly grooved ridge, the ventral cavities broad and shallow. 



A tree, 20-25 high, with a tall trunk sometimes 10' in diameter, covered with 

 light gray bark, becoming rough and scaly near the base, slender branches, the lower 

 horizontal and wide-spreading, the upper ascending and forming a wide open irreg- 

 ular head, and stout glabrous branchlets dark orange-brown when they first appear, 

 deep red-brown and lustrous on the upper, gray-brown and lustrous on the lower 

 side during their first winter, becoming gray slightly tinged with red the following 

 year, and armed with numerous stout curved chestnut-brown or purple spines 1^-2' 

 long and occasionally persistent on old stems. 



Distribution. Hagaman Swamp, Rochester, and at Rush, New York; not 

 common. 



126. Crataegus succulenta, Link. 



Leaves elliptical, acute or acuminate at the apex, gradually narrowed from near 

 the middle and entire at the base, coarsely and usually doubly serrate above, with 

 spreading glandular teeth, and divided above the middle into numerous short acute 



f^} 



lobes, nearly fully grown when the flowers open at the end of May or early in June 

 and then membranaceous, covered above with soft pale hairs and puberulous or 

 rarely nearly glabrous below, and at maturity coriaceous, dark green, glabrous, and 

 somewhat lustrous above, pale yellow-green and mostly puberulous beneath along the 

 stout yellow midribs and 4-7 pairs of slender veins extending obliquely to the points of 

 the lobes and deeply impressed on the upper side, usually 2'-21' long and I'-l^' 

 wide; their petioles stout, more or less winged above, generally about ^' long, fre- 

 quently bright red after midsummer; on vigorous shoots occasionally ovate and often 

 2i' long and 3' wide. Flowers about |' in diameter, on long slender hairy pedicels, 

 in broad lax compound many-flowered villose corymbs; calyx-tube narrowly obconic, 

 villose or glabrous, the lobes broad, acute, laciniate, glandular, with bright red 

 glands, and generally villose; stamens usually 20, sometimes 15; anthers small, rose 

 color; styles 2 or 3, surrounded at the base by a ring of pale hairs. Fruit beginning 

 to ripen about the middle of September and sometimes remaining on the branches 



