G. 36) CLASSIFICATION AND DESCRIPTION YY 
6. Prinus doméstica, L. (ComMMoNn 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, ete.), 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. Primus Pennsylvanica, L.f. (WILD 
Rep 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, 14 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. Pennsylvénica. 
8. Prinus 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. Prinus Cérasus, L. (GARDEN RED 
Peavium: CHERRY. MOoRELLO 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- 
ceeding species and this one are the 
parents of most of the Cherry trees in 
cultivation. 
10. Prinus serétina, 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. P. Cérasus. 
