Chionanthus virginicus
We spent some time this afternoon looking at a potential site for a natural lands/parks restoration project around the Centennial Lake. We spotted this Fringe tree in Bloom among a sea of vegetation, some of it invasives.
It is most likely an offspring of a cultivated tree from many years back, perhaps as far back as the Philadelphia Centennial exhibition of 1876!
Here is a close up of the flowers.
Below is a specimen in recent cultivation along Concourse Lake, which is just across the street.