abstract:Acacia seyal, the Red acacia, known also as the shittah tree (the source of shittim wood), is a thorny, 6–10 m (20–30 ft) high tree with a pale greenish or reddish bark. At the base of the 3–10 cm (1–4 in) feathery leaves there are two straight, light grey thorns, growing to 7–20 cm (3–8 in) long.