ROSACES 377 



neut primary veins; their petioles villose, ultimately glabrous, usually about ^' long; 

 on vigorous leading shoots usually elliptical, acute, coarsely serrate, frequently 3' 

 long and \\' wide, with stouter and more broadly winged petioles. Flowers |'-1' 

 in diameter, on slender pedicels, in broad compound many-flowered glabrous corymbs; 

 calyx-tube broadly obconic, glabrous, the lobes elongated, linear-lanceolate, entire or 

 occasionally slightly dentate; stamens 20; anthers large, bright rose color; styles 

 two or three, surrounded at the base by conspicuous tufts of white hairs. Fruit 

 ripening late in October or in November, on slender pedicels about ^' long, in few- 

 fruited drooping clusters, short-oblong, green tinged with dull red, ' long, with 







only slightly enlarged erect and incurved calyx-lobes mostly deciduous before the 

 fruit ripens; flesh thin, green, dry and hard; nutlets 2 or 3, prominently ridged on 

 the back, with high rounded ridges, ^' long. 



A tree, 15-20 high, with a trunk 8'-10' in diameter, covered with scaly bark, 

 small spreading branches forming a broad open irregular head, and nearly straight 

 branchlets unarmed or sparingly armed with stout straight chestnut-brown spines 

 li'-lf long. 



Distribution. Rich upland woods near Fulton on the Red River, southern Ar- 

 kansas. 



t--t- Anthers yellow. 



11. Cratsegus arborea, Beadl. 



Leaves obovate to oblanceolate, narrowed, acute or rounded at the apex, grad- 

 ually narrowed and concave-cuneate at the long tapering entire base, and finely 

 serrate above the middle, with minute straight teeth, nearly fully grown when the 

 flowers open the middle of April and then glabrous, and at maturity subcoriaceous, 

 bright green and lustrous above, pale below, l|'-2' long, about f ' wide, turning in the 

 autumn orange, yellow, and brown; their petioles J'-f long; on vigorous shoots often 

 3' long, iy wide, coarsely serrate and occasionally slightly lobed. Flowers \' in 

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

 rowly obconic, glabrous, the lobes slender, elongated, acuminate, slightly serrate; 

 stamens 20; anthers pale yellow; styles usually 2. Fruit ripening in September 

 and October, globose to subglobose, \'-%' in diameter, red, the calyx enlarged, with 



