JOURNAL OF THE ARNOLD ARBORETUM [vol. hi 



in the season on the upper side of the midrib, lustrous, 4-5 cm. long, 

 1.5-2 cm. wide and on leading shoots up to 6 cm. long and 4 cm. wide, 

 with a slender midrib and thin primary veins; petioles slender, slightly 

 wing-margined, glabrous or pubescent on the upper side early in the 

 season, especially on leading shoots, 1-1.5 cm. in length. Flowers ap- 

 pearing the middle of April, 1.5 cm. in diameter, on slender glabrous 

 pedicels, in small compact usually 5- or 6-flowered corymbs; calyx-tube 

 broad-obconic, glabrous, the lobes gradually narrowed from the base, 

 slender, acuminate, entire, glabrous on the outer surface, pubescent on 

 the inner surface; stamens 20, anthers yellow; styles 3-5. Fruit (only 

 one collected) ripening in October, in drooping few-fruited clusters, short- 

 oblong, dull orange-red, 8-10 mm. in diameter, the calyx not enlarged, 

 with a narrow shallow cavity pointed in the bottom. 



A tree 4 or 5 in. high, with a trunk 35 cm. in diameter, covered with 

 dark, slightly scaly bark divided into narrow ridges, a wide flat-topped 

 head, and slender slightly zigzag glabrous branchlets bright chestnut 

 brown or orange-brown during their first season and pale gray-brown 

 the following year, and armed with many slender straight chestnut-brown 

 spines 3-1 cm. in length. 



Louisiana. Natchitoches Parish, border of upland woods Natchitoches, 

 E. J. Palmer, Nos. 7234 (3) and 8848 (3), April 10 and October 6, 1915 (type). 



This species seems distinct from the described species of the Crus- 

 galli Group with glabrous corymbs, 20 stamens and yellow anthers, in 

 its thin leaves lobed on vigorous shoots, in its compact few-flowered 

 corymbs and slender branchlets. In the shape of the thin leaves and in 

 the lobing of these on vigorous shoots, and in its slender branchlets it 

 resembles species of the Virides Group, but the numerous spines and the 

 hard dry fruit seem to place it in the Crus-galli Group. 



Crataegus subpilosa (§Crus-galli), n. sp. 



Leaves broad-obovate, rounded at apex, gradually narrowed and 

 cuneate at base, finely often doubly serrate to below the middle with 

 straight or slightly incurved callous tipped teeth, slightly pilose on the 

 upper side of the midrib early in the season, otherwise glabrous, thick, 

 dark green and lustrous above, paler below, 4-6 cm. long and 2-3 cm. 

 wide; petioles slender, wing-margined to below the middle, sparingly 

 pilose in May, becoming glabrous, 5-8 mm. in length. Flowers appear- 

 ing early in May, about 1.2 cm. in diameter, on slender pedicels in com- 

 pact mostly 12-15-flowered corymbs, like the pedicels slightly pilose; 

 calyx-tube narrow-obconic, glabrous, the lobes slender, long-acuminate, 

 entire, glabrous on the outer surface, sparingly pubescent on the inner 

 surface; stamens 20, anthers pale yellow, styles 2 or 3. Fruit ripening 

 the end of September, in small drooping glabrous clusters, short-oblong 

 to subglobose, dull orange-red, 8-10 mm. in diameter, with thin dry 

 flesh; calyx little enlarged, with a narrow cavity pointed in the bottom; 

 nutlets 2 or 3 narrowed at the rounded ends, ridged on the back with a 

 narrow ridge, 7-8 mm. long and 4-5 mm. wide. 



