Princess Tree or Royal Paulownia (Paulownia tomentosa)
Bignoniaceae or Trumpet Creeper Family
 

Tall tree with very large, one-half to one foot long, heart shaped leaves in pairs.  Flowers in late spring before the leaves completely unfurl.  Flowers are about 2 inches long, pale violet, tubular, with five flaring lobes and a yellow throat.  Fruits are pecan-shaped woody capsules, filled with seeds.

Occasional in the wooded parts of the Park.

The flowers and leaves are both distinctive, but the tree, being so tall is rarely noticed, except as a beautiful purple tree on distant hillsides in the late spring.  Flowers most often seen in closeup only when fallen.