NATIVE AMEBIC AN SPECIES OF PRUNTJB. 51 



Prunus alleghaniensis (fig. 3) was described, as occurring from 

 Huntingdon County, Pa., on the limestone bluffs of the Little Juniata, 

 northward through the barrens and westward over the Alleghenies 

 as far as the extremity of Bear Mountain, Elk County. Specimens 

 of the species were distributed to various American herbaria, and it 

 was gi'own on the Lafayette College campus, Easton, Pa. It is 

 grown in the Ai-nold Arboretum, Jamaica Plain, Mass., the tree there 

 being about 18 feet high, and in the arboretum of the Central Experi- 

 mental Farm near Ottawa, Canada, though it does not appear to be 

 very hardy in the latter locaUty. It has been found in Connecticut, 

 at Lisbon, sandy bottoms along theQuinebaug Eiver; at Lyme, bank 

 of the Connecticut River; at Bridgeport ''about 100 plants 10 to 16 

 feet high," in a wet thicket bordering a small stream; at Monroe, 

 in a hillside pasture; and at Southbury, by a roadside, in sandy soil. 



The fruit is used locally, but it does not appear to have been 

 utilized in any way in horticulture. 



Prunus Alleghaniensis Davish W. F. Wight. 



Leaves ovate or oval (PI. V, fig. 3) 4.5 to 8 cm. long, 2.5 to 4 cm. 

 broad, narrowed or roimded at the base, acute or sometimes slightly 

 acuminate at the apex, the margin serrate with acute teeth, green and 

 glabrous above, pale below and glabrous except along the rather 

 prominent midvein, occasionally with a gland on either side near 

 the base of the blade; petioles 6 to 10 mm. long, pubescent, rarely 

 with a gland near the apex. Flowers 8 to 9 mm. broad, appearing 

 in May before the leaves, in umbels of 2 to 4; pedicels 6 to 9 mm. 

 long, glabrous; calyx obscurely and sparingly hauy, the tube obconic, 

 2.5 to 3 mm. long, the lobes oblong-ovate, about 2 mm. long, eglan- 

 dular, bidentate at the apex or entire and acute, the inner surface 

 rather densely pubescent with longish hairs; petals obovate, 5 to 6 

 mm. long and 3 to 4 mm. broad, narrowed to a claw, entire or arose 

 toward the apex. Fruit subglobose or slightly oval, about 15 mm. 

 in diameter, dark i:>urplo or almost black with a bluish bloom, ripen- 

 ing in September, the quality usually poor; stone ovate and pointed 

 at each end (PI. XII, figs. 4 to 6) or sometimes obtuse at the apex, 

 10 mm. long, 6.5 mm. broad and 5 mm. thick, rounded on the ventral 

 edge with a shallow groove on either side, grooved along the dorsal 

 edge, the surface; ob,scurely roughened or reticulated. 



Pnmus alhf/Ji/inienfsis damsii is a shrub 3 to 9 feet high, the young 

 twigs reddish chestnut, almost lustrous, turning gray or brownish 

 the following year; Icnticels round and lighter colored. 



It is occasionally found in thickets along gravelly ridges from the 

 southern part of Roscommon County northeastward for about 60 

 miles to the vicinity of Atlanta, in Montmorency County, Mich,, and 

 doubtless careful search will show a wider distribution. 



