24 SILVA OF NORTH AMERICA. ROSACEA. 
usually does not occur on those of the ordinary form of Prunus umbellata, and by its variously colored 
and unusually late-ripening fruit. 
The fruit, which is produced in great quantities, is used locally in pies and for preserves. 
EXPLANATION OF THE PLATE. 
PrateE DCX XXII. Prunus TARDA. 
. A flowering branch, natural size. 
. Vertical section of a flower, enlarged. 
. A fruiting branch, natural size. 
. Vertical section of a fruit, natural size. 
. A stone, natural size. 
. A stone, divided transversely, natural size. 
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