Princess Tree or Royal Paulownia (Paulownia tomentosa)
Paulowniaceae or Princess Tree Family
(formerly placed in the Bignoniaceae, Trumper Creeper Family, or in the Scrophulariaceae, Figwort 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, often persisting long after the seeds are shed.

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.