Thanks for the replies. By the looks of google images, it may be a sawtooth, but not sure where it came from? I don't have any on my property that I know of. Another tidbit is that it has grown fast. I think I planted those hazelnuts about 4 years ago and it must have been very small, because I didn't see it. It is now probably 4-5' tall. I will leave it go for another year or two and see what comes of it.
VV