Acacia

Exodus 25

v. 5 Rams' skins tanned red, goatskins, dolphin or porpoise skins, acacia wood.
v. 10 They shall make an ark of acacia wood: two and a half cubits long, a cubit and a half wide, and a cubit and a half high.
v. 13 You shall make poles of acacia wood and overlay them with gold
v. 23 Also, make a table of acacia wood, two cubits long, one cubit wide, and a cubit and a half high [for the showbread].
v. 28 You shall make the poles of acacia wood and overlay them with gold, that the table may be carried with them.

Exodus 26:15,26

And you shall make the upright frame for the tabernacle of boards of acacia wood...And you shall make bars of acacia wood: five for the boards of one side

Red acacia (Acacia seyal; also known as Shittim wood or Shittim tree) is a thorny, 6-10 m (20-30 ft) high tree with a greenish or reddish bark. At the base of the 3-10 cm (1-4 in) feathery leaves there are two straight, light grey thorns. The blossoms form round, bright yellow clusters approximately in 1.5 cm (0.5 in) diameter, growing to 7-20 cm (3-8 in) long.

It is distributed from Egypt to Kenya and west Senegal. In the Sahara, it often grows in damp valleys.

It appears in the Bible as the Hebrew "shittah" believed to be shittim wood which is of this species.