A few scattered occurrences in the Lake Eyre region: near Oodnadatta, Dalhousie Springs, Innamincka, Cordillo Downs, Lake Blanche and into the Eastern region near north Mulga Homestead. Soils; mainly crusty and neutral red duplex. Rainfall 125-150 mm. Also W.Aust., N.T., Qld and N.S.W. This species is found in subtropical and tropical America, Africa and Asia, widely introduced in the tropics and often becoming naturalised. It is not certain whether it is indigenous to Australia, or was introduced before white settlement.