Dear Dr. Bill, I think pincherries are also known as choke cherries. This is a variety of wild cherry. I remember that as a child growing up in Northern Michigan, we had one in our front yard. The cool thing for us kids was collecting the semi-hard still pliable sap balls that would form (don't know why they formed, I was just a kid). Sometimes an ant or a fly would get caught in the sap ball.