Ficus callosaFicus callosa is a species of tree in the family Moraceae native to India, southern China, Indo-China and Malesia. In Vietnam it may be called đa chai or đa gùa.DescriptionFicus callosa is a tree up to about tall with a trunk to about diameter, and it may have large buttresses. The leaves of young plants are lobed and larger than those on older plants. They are shiny green above and paler below, with about 8–11 pairs of lateral veins. The syconia are produced in the either singly or in pairs, and are green-yellow when mature; they are somewhat pear-shaped and measure about long and wide. The species is dioecious, with female, male and gall flowers all present in the syconium.