NATIVE AMERICAN SPECIES OF PRUNUS. 43 
green above, pale below and sparingly pubescent along the mid- 
vein toward the base, or sometimes entirely glabrous; petioles 5 to 10 
mm. long, usually reddish and pubescent along the upper edge, 
glandular near the apex or eglandular; stipules linear lanceolate, 
glandular serrate. Flowers 8 or 9 mm. broad, appearing before the 
leaves from the middle of February in northern Florida to the first 
of April in Virginia, in umbels of 2 to 4; pedicels 3 to 6 mm. long, 
glabrous; calyx tube obconic, glabrous, 2 to 2.5 mm. long, the ovate, 
obtuse lobes shorter than the tube, glabrous on the outer surface, 
glabrous within, except near the base, or inner surface sometimes 
sparingly pubescent, the margin ciliate, eglandular; petals about 4 
mm. long, ovate-orbicular or obovate-orbicular, abruptly contracted to 
aclaw. Fruit ripening from the first of June in the South to the mid- 
dle of July in the northern portion of its range, subglobose, skin thin, 
flesh yellow, frequently of very good quality; stone oval (Pl. XI, 
figs 17 and 18), 11 or 12 mm. long, about 10 mm. broad, about 7 mm. 
thick, obtuse at the base, obtuse or somewhat pointed at the apex, 
rounded on the ventral edge and usually grooved on either side, 
erooved along the dorsal edge. 
The tree is small, reaching a maximum height of about 10 feet, or 
more often only a shrub forming dense thickets; the bark of the 
trunk in the younger stems is dark reddish brown, rather smooth or 
becoming slightly furrowed in age. 
The species ranges (fig. 2) from the Eastern Shore of Maryland and 
southern Delaware southward in the sandy soils of the coast region to 
northern and central Florida and westward through Mississippi, Louis- 
- iana, and southern Arkansas to central Texas. Specimens referable to 
this species have also been collected in western Kentucky and Ten- 
nessee, but its occurrence in the former, at least as an indigenous 
species; is to be doubted. 
Prunus angustifolia was described by Marshall, but no locality 
was given other than ‘‘the Southern States.” The specimen in the 
Michaux herbarium in the Muséum d’Histoire Naturelle labeled 
Prunus chicasa is not this species and has not been definitely iden- 
tified. The description, however, can refer to no other plant. 
Rafinesque’s Prunus stenophyllus described as being from ‘‘near 
Washita,” im southern Arkansas, can not be other than this species. 
Rafinesque, who evidently did not see specimens, based his species 
on Cerasus canadensis Robin (65, p. 495; not Miller, 1768). 
Prunus angustifolia is much less important horticulturally than 
either of its subspecies, and among the cultivated varieties studied 
few, among which are Ogeeche and Caddo Chief, can be referred to 
it. The fruit is small, and it is probably less hardy than either of 
its subspecies. 
