Other names: Black rosewood, Quanh quach, Cham trac, Cham black

Big timber trees 10-20cm taller or more, white gray shells, smelling. Leaves are 10-15cm long; leaves with oval or reverse oval, 2-2.5cm long, 1.5cm wide, with sparse hairs on the underside. Flowers 5-8cm long; The station has smooth hair, white petals, 9mm long. Black black, 5-6cm long, 2-2.8cm wide, seed 1, rarely 2, kidney, brown, 10-12mm long.