栗豆树属

Castanospermum is a monotypic genus (i.e. a genus that contains only one species) in the legume family Fabaceae. The sole species is Castanospermum australe, commonly known as Moreton Bay chestnut or black bean. It is native to rainforests on the east coast of Australia (Queensland and northeastern New South Wales), and to nearby islands of the southwest Pacific Ocean. It was first described in 1829, and has been cultivated around the world.