The plural form of shittah (shittim) is used sometimes as a place name (see Shittim), which is evidence of the wide distribution of this tree in Sinai and southern Palestine. The acacia referred to in the Bible was of two kinds, the Umbrella Thorn Acacia Acacia tortilis and the Common Acacia Acacia raddiana.

The Acacia tortilis is found in the hot Arabah Valley, whereas the Acacia raddiana tends to be found in cooler conditions throughout Sinai. A third variety (Acacia albida) is found in lowland Israel, the Sharon Plain, and lower Galilee. The common acacia was the only tree available to the Israelites for construction of the Tabernacle.

Both types of acacia are short, reaching 3-5 meters (10-17 feet) tall, but having a wide crown. As members of the Mimosa family, they have sharp spines, finely divided leaves, and tiny pale yellow flowers arranged in drooping bunches. The bean pod they produce is twisted and looped when dry.

Since the acacia is widespread in dry areas of Africa, Arabia, India and Australia, translators in those areas should be able to use a local word. In such languages a local species should be used, especially one that is used for building. Elsewhere, if none of these is available, the translator can transliterate from Hebrew (shittah) or from a major language, for example, sunt or talh (Arabic), akasiya (English/French/Spanish via Latin). West African translators need to beware of confusing “acacia” and “cassia,” a common tree with yellow flowers.

Source: Each According to its Kind: Plants and Trees in the Bible (UBS Helps for Translators)