
v4 TREES AND SHRUBS 

finely-toothed leaves, which appear about the same time as the clusters of long- 
stalked flowers; round fruit sour and small. Prunus borealis, Pozret, of the 
gardens and the older works, belongs to this species. 
Prunus pumila, Zizneus. DWARF CHERRY. (Cerasus pumila, Michaux.) 
A trailing native shrub, not over 18 inches high; obovate leaves tapering 
towards the base and toothed towards the apex; flowers 2 to 4 in a cluster. 
Prunus serotina, Zhirhart. WILD BLACK CHERRY. (Cerasus Virginica, 
Michaux.) Large native tree, with handsome, valuable wood, and broadly 
lance-shaped, taper-pointed, thick leaves, which have small incurved teeth and 
a shining upper surface; fruit a little bitter, but not decidedly unpleasant. 
Prunus Virginiana, Z7zn@us. CHOKE CHERRY. (Cerasus Virginiana, 
Loiseleur.) Large shrub, with leaves (coming before the flowers) oval, ab- 
ruptly pointed, sharply single- or double-toothed; flower-clusters short and 
dense; fruit becoming dark crimson, when it is barely edible. Prunus 
rubra, Az/on, is the same species. 
Pyrus. PEAR, APPLE, etc.t Shrubs or trees in which the calyx grows 
fast to the ovary and becoming engorged forms the edible fruit. Often thorny; 
flowers in flat-topped clusters, or occasionally single; style 2 to 5; fruit weil 
known and of great service toman; best developed in cold rather than in warm 
climates ; wood compact, used somewhat in the arts. It has been proposed as 
a substitute for boxwood in coarse engraving, though probably better material 
will be found. 
Pyrus Americana, Chamisso and Schlechtendahl. AMERICAN MOUNTAIN 
ASH, ROWAN-TREE, (Sorbus Americana, Marshall.) Small, slender tree, 
native in the cooler parts of this State and northward; bark smooth; leaves 
made up of about 15 bright-green, sharp-pointed, sharp-toothed leaflets ; clusters 
of bright-scarlet fruit, ornamental in autumn, adhering even after the fall of 
the leaves, each berry ¥ inch in diameter. Much like the following, which 
comes from Europe: 
Pyrus Aucuparia, Gdartver. EUROPEAN ROWAN. (Sorbus Aucuparia, 
Linneus.) Larger tree, with blunter leaflets and larger berries (1% inch in 
diameter), than the above. Introduced for ornamental planting. 
Pyrus arbutifolia, Zizze@us. CHOKEBERRY. A common native low 
straggling shrub, found in wet woods ; leaves simple, oval or obovate, thickish, 
bright green, and finely toothed; ‘flowers white in flat-topped clusters on the ends 
of the branches; purple or black berry nearly round, % inch in diameter. 
Pyrus floribunda, Zind/ey, of the gardens appears to belong here. 
Pyrus baccata, Zinneus. (Malus baccata, Desfontaines.) From Dahuria. 
The leaves ovate, acute, smooth, equally toothed, and about as long as the 
leaf-stalk; fruit apple-like in shape. Has produced some varieties in culti- 
vation. 
Pyrus coronaria, Zinmmeus. AMERICAN or GARLAND CRAB-APPLE. 
(Malus coronaria, Miller.) Native species; small tree with the ovate leaves 
roundish or heart-shaped at base and somewhat 3-lobed ; flowers rose-colored 
or whitish tinged with rose-color, fragrant, as is also the greenish-colored 
astringent fruit. 

1 Pirus is now the accepted orthography of the above-named. We have, however, adhered 
to the old, simply in order to avoid confusion in a mere list like this. 





