Hopea rugifolia
Hopea rugifolia is a tree in the family Dipterocarpaceae, native to Borneo. The specific epithet rugifolia means "wrinkled leaf", referring to the dried leaf. Description
Hopea rugifolia grows up to  tall, with a trunk diameter of up to . It has buttresses and stilt roots. The bark is smooth. The papery leaves are lanceolate and measure up to  long. The inflorescences measure up to  long and bear up to six purple flowers. The nuts are egg-shaped and measure up to  long. Distribution and habitat
Hopea rugifolia is endemic to Borneo. Its habitat is lowland dipterocarp forests, at elevations of . References

rugifolia
Endemic dipterocarps of Borneo
Flora of the Borneo lowland rain forests
Plants described in 2002