252 PROCEEDINGS OF THE ACADEMY OF [March, 



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

 glabrous, the lobes long, slender, acuminate, finely glandular-serrate, 

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

 reflexed after anthesis; stamens 10; anthers pale pink; styles 2 or 3, 

 usually 2. Fruit ripening in October on long slender glabrous pedicels, 

 in many-fruited drooping clusters, ovate, crimson, lustrous, marked 

 by large pale dots, 1.3-1.5 cm. in diameter; calyx prominent, with a 

 short tube, a wide shallow cavity, and spreading often deciduous 

 lobes; flesh thick, yellow, soft and succulent; nutlets usually 2, 

 rounded at the ends, ridged on the back, with a broad low grooved 

 ridge, penetrated on the inner faces by narrow deep cavities, 5-5.6 

 mm. long and about 4 mm. wide. 



A shrub 3-4 m. high, with numerous small stems covered with 

 gray scaly bark, spreading into large thickets, and stout zigzag gla- 

 brous branchlets bright orange-green and marked by pale lenticels 

 when they first appear, becoming bright chestnut brown and lustrous 

 in their first year, and armed with numerous very stout straight 

 chestnut brown shining spines 3.5-6 cm. long and often pointed 

 toward the base of the branch. 



Keyser Valley, Scranton, Lackawanna County, A. Twining, (No. 

 48 type) June 13, 1907, A. Twining, B. H. Smith and C. S. Sargent, 

 September 5, 1909. 



9. Crataegus agaia n. sp. 



Leaves obovate to rhombic or oval, acute or acuminate, often 

 short-pointed at the apex, gradually narrowed and cuneate at the 

 entire base, coarsely doubly serrate above, with straight glandular 

 teeth, and slightly divided above the middle into 2 or 3 pairs of small 

 acute lobes; nearly half-grown when the flowers open at the end of 

 May and then thin, yellow-green and roughened above by short 

 white hairs and slightly hairy along the midribs and veins below, 

 and at maturity subcoriaceous, glabrous, dark yellow-green, smooth 

 and lustrous on the upper surface, paler on the lower surface, 5-6 

 cm. long and 4-5 cm. wide, with thin midribs and primary veins; 

 petioles slender, narrowly wing-margined to below the middle, slightly 

 villose early in the season, soon becoming glabrous, 1.5-2 cm. in 

 length; leaves on vigorous shoots thicker, more coarsely serrate and 

 often 7-8 cm. long and 6-7 cm. wide, with stout rose-colored midribs, 

 more prominent veins and stout rose-colored petioles. Flowers 1.8 

 cm. in diameter, on long slender slightly hairy pedicels, in wide lax 

 12-20-flowered corymbs, the lower peduncles from the axils of upper 

 leaves; calyx-tube narrowly obconic, sparingly villose, the lobes 



