THE PLUMS AND CHERRIES 



TREES with bitter, astringent sap, containing hydrocyanic 

 acid. Leaves simple, alternate, generally serrate. Flowers 

 in clusters, perfect, white, with parts distinct. Fruit a fleshy,- 

 l-seeded drupe, with smooth skin and stone. 



KEY TO SPECIES 



A. Flowers axillary, in sessile umbels; fruit oval, with 

 flattened stone. Plums 



AA. Flowers axillary, in umbels; fruit small, red, shin- 

 ing, globular. Bird Cherries 



AAA. Flowers in terminal racemes; fruit globose. 



Wild Cherries 



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