What is a Bungei Nana Catalpa tree?

The catalpa tree, Catalpa bignonioides, was originally found in the Deep South. It is now fairly widespread, growing well in pastures and lawns, on roadsides and stream banks, and in other similar areas. Catalpa trees attain a height of 40 to 50 feet and have a trunk 1 to 4 feet in diameter. The flowers appear in late spring and early summer. The fruits are very long seedpods that resemble thin cigars.