abstract:Dracontomelon dao (; ; ; ; trade names: New Guinea walnut, Pacific walnut) is a tropical canopy tree distinguished mostly by its height (reaching up to about ) for its greyish-brown trunk which is branchless up to about , and for its narrow buttresses which can reach up its trunk up to high. It is native to the riverine and limestone forests of Cambodia, China, India, Indonesia, Malaysia, Myanmar, Papua New Guinea, Philippines, Solomon Islands, and Thailand.