1910.] NATURAL SCIENCES OF PHILADELPHIA. 199 



glands, 2.5-3.5 cm. in length. Flowers 1.5-1.9 cm. in diameter, 

 on short slender pedicels, in compact mostly 6-12-flowered corymbs, 

 the lower peduncles from the axils of upper leaves ; calyx-tube narrowly 

 obconic, the lobes long, slender, acuminate, entire or occasionally 

 slightly dentate near the middle, glabrous on the outer surface, very 

 slightly villose on the inner surface, reflexed after anthesis; stamens 

 8-10; anthers bright purple-pink; styles 3-5. Fruit ripening and 

 beginning to fall early in October, on short stout pedicels, in drooping 

 usually 1-3-fruited clusters, subglobose to slightly obovate, scarlet, 

 lustrous, marked by pale dots, 1.2-1.8 cm. in diameter; calyx little 

 enlarged, with a deep narrow cavity pointed in the bottom, and spread- 

 ing and incurved usually persistent lobes dark red on the upper side 

 below the middle; flesh thick, yellow-green and acid; nutlets 3-5. 

 usually 4, gradually narrowed and rounded at the ends, ridged on the 

 back, with a high broad grooved ridge, 7-7.5 mm. long and 4.5-5 mm. 

 wide. 



An oval-headed tree 6-7 m. high, with a short trunk sometimes 

 2.5 dm. in diameter, covered with dark gray scaly bark, and stout 

 zigzag often contorted branchlets dark orange-green and marked by 

 large pale lenticels when they first appear, becoming light chestnut 

 brown and lustrous in their first season and dull reddish brown the 

 following year, and armed with few stout slightly curved chestnut 

 brown shining spines 2-3.5 cm. long and persistent and becoming 

 branched on old stems. 



Rich hillsides, Kittanning, Armstrong County, O. E. Jennings, 

 B. H. Smith and C. S. Sargent, (No. 59 type) October 7, 1906, O. E. 

 Jennings, May 27, 1907, 0. E. and Grace K. Jennings, October 7, 1907; 

 flood plain of the Allegheny River in sandy soil at Whiskey Hollow, 

 opposite Kittanning, Armstrong County, O. E. Jennings, B. H. Smith 

 and C. S. Sargent, (No. 64) October 7, 1906, O. E. Jennings, May 27, 

 1907; Linesville, Cooper County, O. E. Jennings, (No. 82, with deep 

 rose-purple anthers), June 12 and October 9, 1907. 

 13. Crataegus reoordabilis n. sp. 



Glabrous with the exception of the hairs on the upper surface 

 of the young leaves. Leaves ovate, acuminate, gradually narrowed 

 and usually rounded, or cuneate at the entire base, finely often doubly 

 serrate above, with straight glandular teeth, and divided generally only 

 above the middle into 4 or 5 pairs of small acuminate spreading lobes ; 

 more than half grown when the flowers open late in May and then thin, 

 dark yellow-green, smooth, lustrous, and slightly hairy on the mid- 

 ribs above and pale below, and at maturity thin, dark yellow-green and 



