The shittah-tree is the acacia or mimosa tree, identified with forms such as Acacia nilotica and Acacia seyal. It was a wilderness tree, suited to the desert region through which Israel traveled, and its wood was durable enough for substantial construction.
Shittah wood was used for the various parts of the tabernacle in the wilderness, including its boards and furnishings. Isaiah refers to the tree, while Exodus specifies its use in tabernacle construction.
The wild acacia, called sunt, and the related seyal were common in the wilderness. The Revised Version renders shittah-tree in Isaiah 41:19 as “acacia tree.”