Cassia Fistula: Deciduous or semi-evergreen tree having scented sepia to yellow flowers in drooping racemes and pods whose pulp is used medicinally; being grown in tropical Asia and Central and South America and Australia. The flowers are edible. The pulp of the pods is used to flavor tobacco and as a laxative. Parched leaves are eaten as a mild laxative with other foods. The bark has been used in tanning.