gum acacia

…of the Sénégal valley are acacias, notably Acacia nilotica, which grows profusely on banks, and A. senegal, which provides the gum arabic of commerce and grows on drier slopes. The grass Vetiveria nigritiana grows in tufts in wet depressions. In dry areas near the valley sides A. albida, Balanites aegyptiaca…

…these savannas, with one species, A. senegal, yielding gum arabic, which was long one of Sudan’s principal exports. The high-rainfall savannas of the south-central part of the country are more lush, with rich grasses along the Nile that support a large number of cattle. The intermittent woodlands dotting this belt…