Cornus sericea (This is only a guess.)
Edit:
I need to add something and it is bizarre. I could swear that late yesterday or earlier today someone had asked for an ID of a tree, someone suggested Virburnum and someone else (not me) came along and suggested Dogwood. My brain thought, what kind of Dogwood looks like that with teeny tiny flowers? So I looked it up.
Except, now that I am looking for the thread, it apparently never happened. Perhaps I am losing what little is left of my mind.
I will now begin humming the music from the Twilight Zone.......
