160 PROCEEDINGS OF THE ACADEMY OF [March, 



straight glandular teeth; half-grown when the flowers open early in 

 June and then thin, yellow-green, smooth, lustrous and slightly 

 hairy on the midribs above and paler below, and at maturity thin but 

 firm in texture, glabrous, dark yellow-green on the upper surface, 

 paler on the lower surface, 4-6 cm. long and 2.5-3 cm. wide, with 

 thin prominent midribs, and slender conspicuous veins extending very 

 obliquely toward the apex of the leaf; petioles stout, narrowly wing- 

 margined to below the middle, sparingly villose on the upper side 

 while young, soon becoming glabrous, 1-1.5 cm. in length; leaves on 

 vigorous shoots abruptly pointed and acuminate at the apex, more 

 coarsely serrate, usually slightly and irregularly lobed and often 

 6-7 cm. long and 4.5-5 cm. wide. Flowers 2-2.2 cm. in diameter, 

 on long stout pedicels, in broad lax mostly 10-18-, usually 12-15- 

 flowered corymbs, the elongated lower peduncles from the axils of 

 upper leaves; calyx-tube narrowly obconic, the lobes long, slender, 

 acuminate, irregularly glandular-serrate near the middle, glabrous 

 on the outer surface, slightly villose on the inner surface, reflexed 

 after anthesis; stamens 12-20, usually 20; anthers pink; styles 2-4, 

 usually 3. Fruit ripening early in October, on long drooping pedicels, 

 in lax 2-7-flowered corymbs, subglobose, truncate at the apex, rounded 

 at the base, dark red, marked by large dark dots, more or less pruinose, 

 becoming lustrous, 1.5 cm. in diameter; calyx little enlarged, with 

 a deep narrow cavity, and small spreading and appressed usually 

 persistent lobes; flesh yellow-green, hard and bitter; nutlets usually 3, 

 slightly narrowed and rounded at the ends, usually ridged on the back, 

 with a high narrow ridge, 8-9 mm. long and 5-5.5 mm. wide. 



A tree 6-7 m. high, with a tall trunk covered with gray scaly bark, 

 and often 2.5 dm. in diameter, large wide-spreading branches forming 

 a round-topped symmetrical head, and stout nearly straight branch- 

 lets, pale orange-green when they first appear, becoming light orange- 

 brown and lustrous in their first season and dark gray-brown the 

 following year, and armed with numerous stout nearly straight purple 

 ultimately dark brown spines 3.5-5 cm. long. 



Stony ridges and slopes; common*; Riverview Park, Allegheny, 

 Allegheny County, O. E. Jennings and Grace E. Kinzer, (No. 29 type) 

 October 2, 1905, May 24, 1906, O. E. Jennings, June 8 and October 14, 

 1907, (No. 66) O. E. Jennings, October 8, 1906, June 2, 1907, (No. 26) 

 O. E. Jennings, October 14, 1907, (No. 27) O. E. Jennings, October 14, 

 1907; Nine-mile Run, near Pittsburg, Allegheny County, O. E. Jen- 

 nings, (No. 39) October 9, 1905 (No. 44) October 10, 1909, O. E. 

 Jennings and B. H. Smith, (No. 88) October 5, 1907; Idlepark. West- 



