Tun (Cedrela Toona) or the Indian Mahogony is a deciduous tree growing to 25 m tall with a trunk up to 70 cm diameter. The bark is brown, smooth on young trees, becoming scaly to shaggy on old trees. The leaves are pinnate, 50–70 cm long and 30–40 cm broad, with 10–40 leaflets. The individual leaflets are 9–15 cm long and 2.5–4 cm broad, with an entire or weakly serrated margin. The flowers are produced in summer in panicles 30–50 cm long at the end of a branch. Each flower is small, 4–5 mm diameter, with five white or pale pink petals. The fruit is a capsule 2–3.5 cm long, containing several winged seeds.