198 PROCEEDINGS OF THE ACADEMY OF [March, 



obliquely to the points of the lobes; petioles slender, slightly wing- 

 margined at the apex, glandular, with minute often persistent glands, 

 1.5-2 cm. in length; leaves on vigorous shoots thicker and usually 

 rounded at the base. Flowers 1.5-1.6 cm. in diameter, on long stout 

 pedicels, in rather compact 6-15-flowered corymbs, the long lower 

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

 the lobas gradually narrowed from the base, long, slender, acuminate, 

 entire or occasionally minutely dentate above the middle, reflexed 

 after anthesis; stamens 5-10; anthers light rose color; styles 2 or 3. 

 Fruit ripening the end of September, on stout reddish drooping pedicels, 

 in few-fruited clusters, short-oblong to slightly obovate, full and 

 rounded at the ends, salmon-red, lustrous, marked by small pale dots, 

 1.2-1.5 cm. long and 1-1.2 cm. in diameter; calyx little enlarged, 

 with a deep narrow cavity pointed in the bottom, and small spreading 

 persistent lobes dark red on the upper side below the middle; flesh 

 thick, yellow, dry and bitter, nutlets 2 or 3, narrowed at the ends, 

 acute at the apex, rounded at the base, irregularly ridged on the 

 back, with a broad low slightly grooved ridge, 7-8 mm. long and 4-4.5 

 mm. wide. 



A shrub 3-5 m. high, with small greenish gray smooth stems spread- 

 ing into thickets, and slender only slightly zigzag branchlets dark 

 orange-green when they first appear, becoming light chestnut brown, 

 lustrous and marked by numerous pale lent icels when they first appear, 

 dull reddish brown the following year, and armed with many slender 

 slightly curved chestnut brown shining spines often pointed toward 

 the base of the branch and 1.8-3.5 cm. long. 



Hillsides, Dunmore, near Scranton, Lackawanna County. A. Twining, 

 (Xo. 25 type) May 28 and September 22, 1907. 

 12. Crataegus luxuriosa a. sp. 



Glabrous with the exception of the hairs on the upper surface 

 of the young leaves and on the calyx-lobes. Leaves oblong-ovate, 

 acuminate, gradually narrowed and cuneate or rounded at the often 

 unsymmetrical base, finely often doubly serrate, with straight glandu- 

 lar teeth, and slightly divided usually only above the middle into 

 3 or 4 pairs of small acute lobes; about half-grown when the flowers 

 open late in May and then thin, dark yellow-green and roughened above 

 by short white hairs and paler below, and at maturity thin, dark 

 yellow green and scabrate on the upper surface, pale bluish green on 

 the lower surface, 6-7 cm. long and 4.5-5.5 cm. wide, with slender 

 midribs and thin obscure primar} r veins ; petioles slender, slightly wing- 

 margined at the apex, occasionally glandular, with minute persistent 



