NATIVE AMERICAN SPECIES OF PRUNUS. 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 grown on the Lafayette College campus, Easton, Pa. It is 
grown in the Arnold 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 locality. It has been found in Connecticut, 
at Lisbon, sandy bottoms along the Quinebaug River; 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 Davisi W. F. Wight. 
Leaves ovate or oval (Pl. V, fig. 3) 4.5 to 8 em. long, 2.5 to 4 cm. 
broad, narrowed or rounded 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 hairy, 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 erose 
toward the apex. Fruit subglobose or slightly oval, about 15 mm. 
in diameter, dark purple 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 obscurely roughened or reticulated. 
Prunus alleghamensis davisvi is a shrub 3 to 9 feet high, the young 
twigs reddish chestnut, almost lustrous, turning gray or brownish 
the following year; lenticeis 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. 
