Rose ( Rosacece) 81 



Fig. 28. Wild Plum. Canada Plum. Horse Plum. 

 P. Americana, Marsh. 



Flowers, in simple clusters of three to four blossoms, pre- 

 ceding the leaves. 



Leaves, two to three inches long, oval to reverse 

 egg-shape ; base pointed or rounded, somewhat 

 downy on the veins and in their angles. Bark of 

 the main stem dark, reddish-green, or bronze- 

 green. 



Fruit, one half to two thirds inches in diameter, yellow, 

 orange, or red, with a thick, acid skin, and a pleasant 

 flavor. Stone, slightly flattened, with both edges 

 winged and sharp. 



Found, from Canada southward to Florida, and westward, 

 and often in cultivation. 



A bush (or sometimes a small tree) eight to twenty 

 feet high, with hard, reddish wood. In cultivation it 

 furnishes an excellent stock on which to graft the domestic 

 plums. 



Dwarf Cherry. Sand Cherry. P. piimila, L. 

 Flowers, two to four, together. 



Leaves, narrowly reverse egg-shape, tapering to the base, 

 slightly toothed toward the apex, pale beneath. 



Fruit, slightly lengthened, nearly black when ripe, usually 

 sour and puckery. Stone, lengthened, without mar- 

 gin, the size of a large pea. 



Found, from Canada to Virginia, and westward. 



A drooping and trailing shrub, six inches to six feet 

 high. 



