ROSE FAMILY 117 
2. P. angustifolia Ait. Narrow-LEAvED CraB APPLE. A small 
tree, with smooth, light gray bark. Leaves lanceolate or oblong, ser- 
rate, downy when young, acute at the base, short-petioled. Corymbs 
few-flowered. Flowers pink, fragrant, about 1 in. broad. Styles 
smooth, distinct. Fruit nearly globose, about % in. in diameter, very 
sour. In open woods, Pennsylvania, West, and South.* 
3. P. coronaria L. AMERICAN CRAB APPLE. A small tree, with 
smooth bark. Leaves triangular or oval-lanceolate, acutish or rounded 
or a little heart-shaped at the base, cut-serrate and often somewhat 
3-lobed, slender-petioled, soon smooth. Flowers large, few in a ¢lus- 
ter, pale rose color, very sweet-scented. Fruit bright green, turning 
yellowish, sometimes 1} in. in diameter, flattened at right angles to the 
pedicels, very fragrant. Glades, western New York, West, and South. 
4. P. ioensis Bailey. Western Cras Aprie. A small tree, much 
like P. coronaria but with the leaves white-downy beneath, ovate- 
lanceolate and narrowed at the base. Fruit dull green with light 
dots, about 1 in. in diameter. Thickets W. 
5. P. Malus L. Appts. A tree with a rounded top and dark- 
colored bark. Leaves oval or ovate, obtuse or pointed, dentate or 
nearly entire, rounded at the base, smooth above, downy beneath. 
Cymes few—many-flowered. Flowers large, white or pink. Calyx 
downy. Fruit depressed-globose to ovoid, hollowed at the base and 
usually at the apex. Cultivated from Europe and often running 
wild in old pastures, etc., E.* 
6. P. arbutifolia L. f. CHoxkeBerry, CHoke Pear, Dogsperry. 
A shrub, 5-8 ft. high. Leaves oblong or oblanceolate, finely serrate, 
downy beneath, short-petioled. Flowers in a downy compound cyme, 
small, white or reddish. Fruit pear-shaped or nearly globular, not 
larger than a currant, very dark purple, dry and puckery. There is 
also a~smooth-leaved variety with black fruit. Swamps and damp 
thickets, especially N.E. 
7. P. americana DC. American Mountain Asu. A tall shrub 
or small tree. Leaves odd-pinnate. Leaflets oblong-lanceolate, taper- 
pointed, sharply serrate, smooth, bright green. Flowers small, white, 
in large flat, compound cymes. Fruit bright scarlet, not larger than 
currants. Common N. and often cultivated. 
8. P. Aucuparia Ehrh. Evropzan Mountain Asn or Rowan 
Tree. Larger than No.7. Leaflets paler, downy beneath. Fruit 
larger, about 1 in. in diameter. Cultivated from Europe. 
Vv. AMELANCHIER Medic. 
Shrubs or small trees, with smooth gray bark. Leaves sim- 
ple, sharply serrate, petioled. Flowers white, in racemes. 
