Somebody please help me identify this beautiful tree. It is approx. 20 feet tall and is in Savannah, Ga.

Here are pix of leaves, stem and seed pods. Leaves are about 3 inches long by 1 1/4 inch wide (no leaf stem) and seed pods have 3 "vanes" - seems to be only one round purplish-black seed in each section (3). The pods are "paperish" and about 2 to 2 1/4 inches tall by 1 1/2 inch wide.

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