Pretty crazy eh?
According to Erich Petschke (Asst. Corporate Gardener for McMenamin's) the tree is a named variety of Cornus kousa (Dogwood). He said a trip to archives might produce the name (wouldn’t you love to see the archives?), and I’ll update with the name if I get it. What a mess they can make, but oh so worth it!
In the meantime I wanted to get these pictures up in time that any of you Portlanders that might want to plan a visit to the Kennedy School to check it out could. The tree is growing against the back of the building at the north end of the parking lot. Since I was there I also had to snap a few shots of some of my favorite plants….like this Manfreda undulata 'Chocolate Chips'