1910. J NATURAL SCIENCES OF PHILADELPHIA. 195 



from the axils of upper leaves; calyx-tube narrowly obconic, the 

 lobes long, slender, acuminate, coarsely glandular-serrate near the 

 middle or entire, refiexed after anthesis ; stamens 10 ; anthers rose color ; 

 styles 2-4, usually 3. Fruit ripening in October, on long slender 

 drooping pedicels, in few-fruited clusters, subglobose, flattened at 

 the ends, concave at the insertion of the pedicel, more or less obtusely 

 5-angled, orange-red blotched with yellow-green, marked by large 

 pale dots, slightly pruinose, 1-1.5 cm. broad and 1-1.3 cm. long; 

 calyx little enlarged, with a wide shallow cavity, and spreading and 

 appressed lobes; flesh thin, light greenish yellow, slightly juicy; nutlets 

 usually 3, broad and rounded at the base, narrowed at the apex ; 

 ridged on the back, with a broad prominent sometimes grooved ridge, 

 6-7 mm. long and 5-5.7 mm. wide, or when 2 nearly hemispherical in 

 general outline. 



A shrub 2-3 m. high with slender nearly straight branchlets dark 

 orange-green and marked by pale lenticels when they first appear, 

 becoming dark chestnut red and lustrous during their first season 

 and dull red-brown the following year, and armed with numerous 

 slender straight chestnut brown spines 3-4 cm. long. 



In rich alluvial soil near Kitt aiming, Armstrong County, O. E. 

 Jennings, (No. 65 type) May 27, 1907, 0. E. and Grace K. Jennings, 

 September 27, 1909. 



8. Crataegus dissona Sargent. 



Rhodora, V, 60 (1903); Bot, Gazette, XXXV, 379; Proc. Acad. Nat. Sci. 

 Phila., 1905, 601. 



On an alluvial flat, West Kittanning, Armstrong County, O. E. 

 Jennings, B. H. Smith and C. S. Sargent, (No. 64) October 7, 1906, 

 O. E. Jennings, May 27, 1907; also Illinois to western and southern 

 New England and to eastern Pennsylvania. 



9. Crataegus ampliata n. sp. 



Glabrous with the exception of the hairs on the upper curface 

 of the young leaves. Leaves ovate, acuminate, rounded or cuneate 

 at the broad base, finely often doubly serrate, with straight glandular 

 teeth, and deeply divided into 4 or 5 pairs of broad acuminate lateral 

 lobes; nearly fully grown when the flowers open about the middle 

 of May and then thin, dark blue-green, lustrous and roughened above 

 by short white hairs and pale below, and at maturity thin but firm 

 in texture, scabrate or nearly smooth on the upper surface, 4.5- 

 5.5 cm. long and 3.5-5 cm. wide, with slender midribs and primary 

 veins; petioles slender, slightly wing-margined at the apex, glandular 

 with minute deciduous glands, 2-2.5 cm. in length; leaves on vigorous 



