1910.] NATURAL SCIENCES OF PHILADELPHIA. 193 



glandular, with minute often persistent glands, 2.5-3 cm. in length. 

 Flowers 1.5 cm. in diameter, on long slender pedicels, in lax 6-12- 

 flowered corymbs, the elongated lower peduncles from the axils of 

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

 acuminate and rose-colored at the apex, minutely glandular-dentate 

 near the middle, sparingly villose on the inner surface, reflexed after 

 anthesis; stamens 5-10; anthers rose color; styles 3-5. Fruit ripening 

 early in October, on stout drooping pedicels, in few-fruited clusters, 

 subglobose often broader than long, full and rounded at the ends, 

 scarlet, lustrous, marked by numerous large pale dots, 1-1.2 cm. long 

 and 1-1.4 cm. in diameter; calyx little enlarged, with a deep narrow 

 cavity, and small spreading persistent lobes; flesh yellow, acid; nutlets 

 3-5, gradually narrowed and rounded at the ends, ridged on the back, 

 with a broad deeply grooved ridge, 6.5-7 cm. long and about 4 mm. 

 wide. 



A shrub 5-6 m. high, with stout stems covered with ashy gray bark, 

 small ascending branches forming a wide head,and slender nearly straight 

 branchlets dark orange-green when they first appear, becoming light 

 chestnut brown, lustrous and marked by small dark lenticels in their first 

 season and dull gray-brown the following year, and armed with stout 

 straight or slightly curved chestnut brown shining spines 1.5-2 cm. 

 long, and numerous on the stems and branches. 



Lincoln Heights, Scranton, Lackawanna County, A. Twining, 

 (No. 3 type) May 31 and October 5, 1907. 



6. Crataegus blairensis n. sp. 



Glabrous with the exception of the hairs on the upper surface of the 

 young leaves. Leaves broadly ovate, acuminate, abruptly cuneate at 

 the wide base, coarsely often doubly serrate, with straight glandular 

 teeth, and slightly divided into 3 or 4 pairs of short broad acuminate 

 lateral lobes ; tinged with red and covered on the upper surface with 

 soft white hairs when they unfold, more than half-grown when the 

 flowers open about the 20th of May and then thin, light yellow-green 

 and glabrous above and paler below, and at maturity thick, dark 

 bluish green and lustrous on the upper surface, light yellow-green on 

 the lower surface, 5-6.5 cm. long and 4-4.5 cm. wide, with thin mid- 

 ribs and primary veins; petioles slender, glandular, with minute 

 mostly deciduous glands, 2.5-4 cm. in length; leaves on vigorous 

 shoots often rounded at the base, more coarsely serrate, more deeply 

 lobed and 7-8 cm. long and 6-7 cm. wide, with stouter conspicu- 

 ously glandular petioles and foliaceous lunate glandular-serrate 

 13 



