Known as mersawa kesat or pengiran kesat in Malay, this species is a large emergent tree growing up to 65 m tall and 1.6 m in diameter. This species can be found distributed across Malaysia where in Peninsular Malaysia, it occurs through the lowlands except for Malacca, Negeri Sembilan and Penang while in Sabah and Sarawak, it occurs in the mixed dipterocarp forests at altitudes to 700 m. (Yong et al., 2011). This species also occurs in Myanmar, Thailand, Indo-China, Indonesia, Borneo and the Philippines. Although several populations were found occurring in the Protected Areas Network, this species was assessed as Vulnerable for Malaysia due to habitat loss and forest conversion (Chua et al., 2010; Yong et al., 2011).