- Castanospermum, genus Castanospermum - a rosid dicot genus of the subfamily Papilionoideae having one species: Moreton Bay chestnut
--1 is a kind of rosid dicot genus
--1 is a member of Papilionoideae, subfamily Papilionoideae
--1 has members: Moreton Bay chestnut, Australian chestnut