Simaba borneensis grows as a tree up to tall with a trunkdiameter of, with buttresses. The leaves are oblong or obovate to elliptic and measure up to long and up to wide. The are. The ellispoid fruits are purplish-red and measure up to in diameter.
Simaba borneensis is native to Sumatra and Borneo, where it is widely found. Its habitat is in lowland primarydipterocarpforests, occasionally in kerangas forests.
Conservation
Simaba borneensis has been assessed as least concern on the IUCN Red List. The species is broadly distributed. However, it is threatened by deforestation and by conversion of land for agriculture and plantations. The species is not present in any protected areas.