ROSACEJE 407 



yellow; nutlet 1, gradually narrowed from the middle to the obtuse ends, grooved and 

 irregularly ridged on the dorsal face, or 2 and then broad, rounded at the ends, with a high 

 wide rounded ridge, about f G ' long. 



A tree, sometimes 20 high, with a trunk 8'-12' in diameter, covered with smooth light 

 gray bark, spreading branches forming a round-topped head, and slender slightly zigzag 

 branchlets light orange-green when the first appear, becoming dark purple and lustrous and 

 ultimately grayish brown, and armed with many slender straight or slightly curved dark 

 purple-brown shining spines l'-2' long. 



Distribution. Central and northern Missouri, northern Illinois, northeastern Indiana 

 (Allen County), southeastern Michigan, southern Ontario, through Ohio to western New 

 York (South Buffalo, Erie County), and in eastern Pennsylvania (Berks County). 



7. Crataegus algens Beadl. 



Leaves obovate to oblong or elliptic, rounded or acute at apex, gradually narrowed and 

 concave-cuneate at the entire base, sharply serrate above, villose on the upper side of the 



Fig. 359 



midrib and nearly full grown when the flowers open at the end of May, and at maturity 

 glabrous, subcoriaceous, dark green and lustrous above, pale below, l^'-2' long, and f'-li' 

 wide, with a thin midrib and slender primary veins; turning in the autumn to shades of 

 orange, yellow, and brown; petioles slender, rarely glandular with minute glands, about 

 }-' in length ; leaves at the end of vigorous shoots oblong-obovate, rounded or abruptly short- 

 pointed at apex, coarsely serrate, and often 3' long and \\' wide. Flowers \' in diameter, 

 on slender elongated pedicels, in broad many-flowered glabrous corymbs; calyx-tube nar- 

 rowly obconic, glabrous, the lobes slender, acuminate, entire or remotely serrate; stamens 

 10; anthers yellow; styles 1-3. Fruit ripening in September and October, on slender pedi- 

 cels, in few-fruited hanging clusters, subglobose to obovoid, \'-\' in diameter, dull red, or 

 green flushed with red, \'-\' long; calyx somewhat enlarged, with reflexed persistent lobes; 

 nutlets usually 1 or 2, prominently ridged on the back, \'-\' long. 



A tree, 15-18 high, with a short trunk occasionally 7'-8' in diameter, stout ascending 

 wide-spreading branches forming a wide round-topped head, and stout glabrous bright 

 chestnut-brown branchlets becoming gray in their second year, and armed with stout 

 nearly straight spines l'-2' long. 



Distribution. Borders of woods and fields; western North Carolina to northern Georgia 

 and central Alabama (near Selma, Dallas County, common), and to eastern Tennessee; one 

 of the commonest species in the neighborhood of Asheville, Buncombe County, North 

 Carolina. 





