G.36] 



CLASSIFICATION AND DESCRIPTION 



99 



6. Prunus dom6stica, L. (COMMON GARDEN PLUM.) Leaves 1 

 to 3 in. long, oval or ovate-lanceolate, acute to obtuse. Flowers 

 white, nearly solitary. Drupe globular, obovoid to ovoid, of many 

 colors (black, white, etc.), covered with a rich glaucous bloom. A 

 small tree, 10 to 20 ft. high, in cultivation everywhere for its fruit. 

 Over a hundred varieties are named in the catalogues. 



7. Prunus Pennsylvania, L. f . (WILD 

 RED CHERRY. ) Leaves oblong-lanceolate, 

 pointed, finely and sharply serrate, shin- 

 ing green, smooth on both sides. Flow- 

 ers many in an umbel on long stems. Fruit 

 round, light red, quite small, J^ in. in di- 

 ameter, sour. A small tree, 20 to 30 ft. 

 high, in rocky woods ; common north and 

 extending southward along the Allegha- 

 nies to North Carolina. 



P. Pennsylvfinica. 



8. Prunus avium, L. (BIRD-CHERRY OR 

 ENGLISH CHERRY.) Leaves oval-lanceolate, 

 sharp-pointed, coarsely or doubly serrate. 

 Flowers in sessile umbels, opening when the 

 leaves appear. Fruit of various colors, some- 

 what heart-shaped. This is the Cherry tree, 

 30 to 50 ft. high, of which there are many 

 named varieties usually cultivated for the 

 fruit. 



9. Prunus C6rasus, L. (GARDEN BED 

 CHERRY. MORELLO CHERRY. ) Leaves obo- 



vate and lance-ovate, serrate, on slender spreading branches. Flow- 

 ers rather large. Fruit globular, bright 

 red to dark purple, very sour ; in sessile 

 umbels. A small, round-headed tree, 10 

 to 30 ft. high, often cultivated. The pre- 

 ceding species and this one are the 

 parents of most of the Cherry trees in 

 cultivation. 



10. Prunus ser6tina, Ehrh. (WILD 

 BLACK CHERRY.) Leaves oblong or lance- 

 oblong, thickish, smooth, usually taper- 

 pointed, serrate, with incurved, short, thick 

 teeth. Flowers in long racemes. June. 



