500 TREES OF NORTH AMERICA 



ture, dark green and glabrous on the upper surface, pale and pubescent on the lower 

 surface, particularly along the stout midribs and 4-6 pairs of primary veins deeply 

 impressed on the upper side, 2'-2^' long, l^'-2' wide; their petioles stout, slightly 

 winged toward the apex, usually '-' long, and generally bright red below the 

 middle after midsummer; on vigorous shoots usually elliptical, acute or acuminate, 

 more closely dentate and more often lobed, sometimes decurrent nearly to the base 

 of the stout petioles, 3'-4' long and 2^'-3' wide, with f oliaceous lunate coarsely gland- 

 ular-dentate stalked stipules often \' in length. Flowers about f ' in diameter, on 

 slender slightly hairy pedicels, in broad compact many-flowered villose compound 

 corymbs; calyx-tube narrowly obconic, coated with long matted pale hairs, the lobes 

 broad, acuminate, very coarsely glandular-serrate, with large stipitate bright red 

 glands, glabrous on the outer surface except at the base, villose on the inner surf ace; 

 stamens 10; anthers rose color; styles 2, or usually 3. Fruit ripening early in 

 October and persistent on the branches until after the beginning of winter, on stout 

 bright red pedicels, in few-fruited drooping villose clusters, globose, scarlet, lustrous, 

 marked by occasional dark dots, more or less villose at the ends, ^' in diameter; 

 calyx prominent, with a short villose tube, and spreading lobes gradually narrowed 

 from broad bases, sparingly glandular-serrate or nearly entire, villose, mostly decid- 

 uous before the fruit ripens; flesh thin, yellow, dry and mealy; nutlets 2 or 3, \' 

 long, broad and thick, rounded at the ends, prominently ridged and grooved on the 

 back, with a high broad ridge, the ventral cavities broad and deep. 



A tree, rarely more than 18 high, with a trunk 4'-5' in diameter, covered with 

 thin close bark broken on the surface into pale plate-like scales, and divided into 

 several long erect and spreading slender branches forming a wide open-topped head, 

 and stout somewhat zigzag branchlets covered at first with scattered pale caducous 

 hairs, bright orange-brown and lustrous during their first season, becoming dark 

 brown in their second year and ultimately ashy gray, and armed with numerous 

 slender straight or somewhat curved bright chestnut-brown shining spines l'-3' 

 long. 



Distribution. Open woods along the gravelly banks of small streams in Stark 

 and Peoria counties, Illinois; not common. 



129. Crataegus integriloba, Sarg. 



Leaves broadly obovate, oval or rhomboidal, acute, gradually or abruptly nar- 

 rowed and cuneate below the middle, entire toward the base, coarsely doubly serrate 

 above, with spreading glandular teeth, and irregularly divided into numerous short 

 acute or acuminate lobes, coated in early spring with soft pale caducous hairs, nearly 

 fully grown when the flowers open during the first week in June, and at maturity 

 glabrous, thin but firm in texture, dark green and lustrous on the upper surface, pale 

 yellow-green on the lower surface, l^'-3' long, l^'-2' wide, with slender midribs 

 often dark red at the base and 4-6 pairs of slender primary veins deeply impressed 

 on the upper side; their petioles stout, more or less broadly winged toward the apex, 

 at first puberulous, soon glabrous, often red on the lower side, '-f long. Flowers 

 |' in diameter, on elongated slender villose pedicels, in broad open many-flowered 

 crowded compound villose corymbs; calyx-tube broadly obconic, coated toward the 

 base with long matted white hairs and glabrous above, the lobes linear-lanceolate, 

 elongated, entire or very rarely furnished with occasional caducous glands; stamens 

 10; anthers large, rose color; styles 2 or 3, surrounded at the base by a narrow ring 

 of snow-white hairs. Fruit ripening at the end of September or early in October, on 



