What is "catalpa bignonioides"

Catalpa \Ca*tal"pa\, n. [From the language of the Indians of Carolina, where Catesby discovered this tree in the year 1726.] (Bot.) A genus of American and East Indian trees, of which the best known species are the Catalpa bignonioides, a large, ornamental North American tree, with spotted white flowers and long cylindrical pods, and the Catalpa speciosa, of the Mississipi valley; -- called also Indian bean.

Catalpa bignonioides is a species of Catalpa that is native to the southeastern United States in Alabama, Florida, Georgia, Louisiana, and Mississippi. Common names include southern catalpa, cigartree, and Indian-bean-tree.