rosp: 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 f 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 H in. in diameter, flattened at right angles to the 

 pedicels, very fragrant. Glades, western New York, West, and South. 



4. P. ioensis liailey. 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 IMountain Ash. A tall shrub 

 or small tree. Leaves odd-pinnate. Leaflets oblong-lanceolate, taper- 

 pointed, sharply serrate, smooth, bi-ight green. Flowers small, white, 

 in large flat, compound cymes. Fruit bright scarlet, not larger than 

 currants. Common X. and often cultivated. 



8. P. Aucuparia Ehrh. European ^Iountain Ash or Rowan 

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

 larger, about i 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. 



