Prunus virginiana chokecherry 

Prunus virginiana chokecherry

Prunus virginiana chokecherry

Prunus virginiana chokecherry

Prunus virginiana chokecherry

Information from USDA Plants Database
http://plants.usda.gov/java/profile?symbol=prvi

https://www.google.com/search?q=Prunus+virginiana+chokecherry&hl=en&source=lnms&tbm=isch&sa=X&ei=U6BKUZKzJcaXiAKctYHoCw&ved=0CAcQ_AUoAQ&biw=1008&bih=522