👉 The term "castanospermum" is a scientific name for a type of flowering plant. It belongs to the family Rosaceae and is commonly known as the Spanish bean or the chilean bean, due to its elongated, tubular shape. Castanospermum species are native to South America and include several varieties, including the popular "Spanish bean" (Castanospermum sp.) and "Chilena bean" (Castanospermum mexicana).