Dimocarpus is a genus of about 20 species of trees or shrubs known to science, constituting part of the flowering plant family Sapindaceae. They grow naturally in tropical south and Southeast Asia, Malesia, Papuasia and Australasia, including Sri Lanka, India, the Philippines, southern China, Taiwan, Burma, Cambodia, Vietnam, Malaysia, Indonesia, New Guinea, East Timor, far north-eastern Queensland Australia. The fruit is edible, with the Longan (D. longan) being grown commercially for fruit production.