Rhigozum is a genus of flowering plants in the Bignoniaceae family. These thorny African bushes can be classified as shrubs or as multi-stemmed trees that can grow up to three meters in height. The branches are rigid, and twist in angular directions. The branches' arms are short. This genus can produce flowers between the months of September and December. They grow out in dry, open woodland ion sandy soils or out of lime stone rocky outcrops. Rhigozum can be found in Angola, Botswana, Namibia, Northern Cape, Limpopo, South Africa, Zambia, and Zimbabwe.