ROSACES 



405 



deciduous before the fruit ripens; flesh very thin, yellow, dry and hard; nutlets 5, 

 rounded and sometimes obscurely grooved on the back, about T Y long. 



A tree, 20-25 high, with a tall straight trunk often a foot in diameter, covered 

 with thin dark brown scaly bark, long ascending branches forming a narrow head, 

 and slender nearly straight branchlets unarmed or armed with occasional slender 

 straight chestnut-brown lustrous spines f'-l' long. 



Distribution. Bottom-lauds of the Trinity River and its branches near Dallas, 

 Texas, in forests of Elms and Nettle-trees. 



39. Crataegus blanda, Sarg. 



Leaves oval to rhomboidal, acute or acuminate, and occasionally slightly lobed 

 toward the apex, broadly cuneate or concave-cuneate at the entire base, coarsely 

 crenately serrate above the middle, with gland-tipped teeth, coated with soft pale 

 hairs when they unfold, fully grown when the flowers open about the 1st of May, 

 and then membranaceous, dark green and lustrous above and glabrous below with 

 the exception of large axillary tufts of snow-white tomentum, and at maturity sub- 

 coriaceous, yellow-green and lustrous on the upper surface, paler on the lower sur- 

 face, l'-2' long, V-\\' wide, with slender midribs and 2 or 3 pairs of thin primary 

 veins extending very obliquely toward the end of the leaf; their petioles slender, 

 slightly winged above, at first villose along the upper side, soon becoming gla- 

 brous, f'-l' long; on vigorous shoots often broadly ovate, full and rounded at the 

 base, more deeply lobed above the middle, 2'-2' long and 1^-2' wide. Flowers 

 V in diameter, on slender elongated pedicels, in broad many-flowered compound 



glabrous corymbs, with linear entire bracts and bractlets; calyx-tube broadly ob- 

 conic, glabrous, the lobes gradually narrowed from broad bases, acuminate, entire or 

 obscurely dentate, glabrous; stamens 20; anthers canary-yellow; styles 5. Fruit 

 ripening about the middle of October, on slender pedicels, in many-fruited droop- 

 ing clusters, subglobose to short-oblong, bright orange-red, \' in diameter ; calyx 

 prominent, with spreading lobes usually deciduous from the ripe fruit ; flesh thin, 

 yellow, dry and mealy ; nutlets 5, thin, narrowed at the ends, deeply grooved on 

 the back, \' long. 



An unarmed tree, 25-30 high, with a tall trunk 10'-12' in diameter, covered 

 with dark brown or nearly black bark divided by shallow fissures and broken on the 



