KOSE FAMILY 117 



2. P. angustifolia Ait. Narrow-Leaved Crab Apple. A small 

 tree, with smooth, light gray bS,rk. 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 clus- 

 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 Crab Apple. 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. Apple. 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. Chokeberry, Choke Pear, Dogberry. 

 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 Ash. 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. European Mountain Ash or Rowan 

 Tree. Larger than No. 7. Leaflets paler, downy beneath. Fruit 

 larger, about | in. in diameter. Cultivated from Europe. 



V. AMELANCHIER Medic. 



Shrubs or small trees, with smooth gray bark. Leaves sim- 

 ple, sharply serrate, petioled. Flowers white, in racemes. 



