I snapped this picture of a flower from my tulip tree this morning just before coming into work. Tulip trees get thier name from the shape of thier leaves, not from the flowers - which are spectacular in thier own right. They make great shade trees, as they have no fruit; the only thing they drop is leaves each fall.
Sadly, this tree is approaching the end of it's life. It's very old for it's kind (60+ years) and is rotting to the core. Late this fall, I will take it down to a stump and see if it will com back next year.