duku and langsat two SE Asian fruits, are both classified as Lansium domesticum, although one can readily be distinguished from the other and the two of them recognized as separate botanical varieties. L. domesticum var domesticum corresponds to the name duku and is the more widely cultivated. L. domesticum var pubescens, which is the langsat, is often called ‘wild langsat’ but it too is cultivated. Each variety has some desirable characteristics.
Cultivation takes place mainly in Indonesia (especially Java), Malaysia, and Thailand.
