ROSE FAMILY 125 
thick, oval to lanceolate-ovate, acute or taper-pointed at the apex, 
finely serrate with calloused teeth, smooth above, downy on the veins 
beneath. Racemes terminal, long and spreading. Flowers white. 
Fruit globose, about: } in. in diameter, purplish-black. In rich woods. 
Wood much used in cabinet-making.* 
2. P. virginiana L. Cyokecuernry. <A shrub or small tree, 5-20 ft. 
high. Leaves thin, oval or obovate, pale, pointed, sharply serrate. Flow- 
ers small, white, in short racemes. Fruit bright red, turning at length 
to dark crimson, very puckery until fully ripe. River banks and thickets. 
3. P. pennsylvanica L.f. Witp Rep Cuerry. A tree 20-30 ft. 
high, w.ch light, reddish-brown bark. Leaves oval or oblong-lanceo- 
late, pointed, finely serrate, with both sides green, smooth and shin- 
ing. Flowers long-pediceled, many in a cluster, the clusters lateral, 
leafless. Fruit globose, very small, light red, with thin sour pulp 
and globular stone. In rocky woods. 
4. P. Besseyi Bailey. Western Sanp Cuerry. A shrub 1-4 ft. 
high, often with spreading and prostrate branches. Leaves usually 
elliptic or oblong-elliptic, with appressed teeth. Flowers sessile in 
lateral umbels, } in. to nearly 3 in. in diameter, opening with the 
leaves. Fruit black, mottled, or yellowish, }-? in. in diameter, bitter 
and astringent. Prairies W. _ 
5. P. Cerasus L. Cuerry. Often becoming a large tree. Leaves 
oval or ovate, acute or taper-pointed at the apex, rounded at the 
base, irregularly serrate-dentate, smooth on both sides, resinous 
when young. Flowers in lateral umbels. white; pedicels long and 
slender. Fruit globose, red or black. Cultivated from Europe. This 
is the species from which most of our sour cultivated varieties have 
been developed.* 
B. Stone oval, compressed ; fruit smooth when ripe. Branches often 
spiny. (Plums.) 
6. P. angustifolia Marsh. Caickasaw Prum. A small tree with 
spiny branches. Leaves lanceolate or oblong-lanceolate, acute at the 
apex, usually obtuse at the base, finely and sharply serrate, rather 
thin, smooth. Flowers in lateral, sessile umbels, pedicels short. 
Calyx smooth. Fruit yellowish-red, subglobose, skin thin, stone only 
slightly compressed. In old fields $.* 
7. P. americana Marsh. Witp Piva. A small tree, bark thick 
and rough, branches spiny. Leaves ovate or obovate, acuminate at 
the apex, rounded or cordate at the base, sharply serrate, rather 
thick, downy beneath; petioles glandular. Flowers in lateral, sessile 
umbels, appearing with or before the leaves; pedicels 1-3 in. long, 
flowers 1-3 in. in diameter. Calvx downy within. Fruit globose, red 
or yellow, 3-1 in. in diameter. Common in woods.* 
