Catalpa bignonioides Walter, Fl. Carol. 64 1788. (syn: Bignonia catalpa L.; Bignonia spectabilis Salisb.; Catalpa arborea Baill.; Catalpa bignonioides f. aurea Bureau .......; Catalpa catalpa (L.) H.Karst. [Invalid]; Catalpa communis Dum.Cours.; Catalpa cordifolia Moench; Catalpa syringifolia Sims; Catalpa syringifolia var. koehnei Hesse; Catalpa ternifolia Cav.; Catalpa umbraculifera Ugolini; Catalpium amena Raf.);

E. Texas to S. Georgia as per WCSP;

Tree seen in Atlanta during my visit in Oct,18.

My best suggestion would be Catalpa bignoniodes aka Southern Catalpa. There is a tree that is sometimes confused for Catalpa - Paulownia tomentosa, but that one has very ' sticky' leaves.