90 VARIOUS FOOD-PLANTS 
Fig. 95.—Plum (Prunus domestica, Rose Family, Rosacew). Fruiting branch 
(Nicholson.)—The plant is a small tree with hairy twigs; flowers like 
those of peach but white; fruit smooth and with a bloom, the stone 
slightly rough. 
Fig. 96.—Sour Cherry (Prunus Cerasus, Rose Family, Rosacee). 1, flower- 
ing branch. 2, flower, cut vertically. 3, fruit, cut vertically. (Wos- 
sidlo.)—The plant is a rather low, round-headed tree with gray bark; 
leaves stiff and glossy; flowers white or reddish; mostly in advance 
of the leaves; fruit smooth, light or dark red, smooth, without bloom, 
sour or sometimes sweet in cultivation. This species together with the 
mazzard cherry (P. Aviwm) includes most of the varieties of cherry 
grown for their fruit, 
