The genus Acacia is well represented in Sudan (1) and is economically of great importance. Gum arabic, the second most important export commodity (2), is obtained from various species. In addition, the pods of certain other species are used in traditional medicine, in tanning (2), and, in some parts of Sudan, they are eaten. The leaves and the unripe fruit provide grazing, especially for horses and camels. People expose themselves to the smoke from the burning heartwood of certain species as a cure for rheumatic pains, and women value the smoke from Acacia seyal for the aroma and copper-colored tint it gives the skin. The yield of dimethyltryptamine from A. polycantha subsp. campylacantha was 0.004%; from A. nubica, 0.0016%; and from A. senegal, 0.003%, calculated from the weight of the picrate.