Basionym: Heppia rodriguesii Cromb., J. Linn. Soc., Bot. 15: 436 (1876) [1877].
Type locality: Mauritius, Rodriguez Island, on rocks, Venus-Transit-Expedition, 9-12, 1874, J. B. Balfour 2302 (BM - lectotype; BM Balfour 2233 - isolectotype). Designated by Büdel (1989: 293).
Distribution: Old World and Australia. Mauritius (Rodriguez), Western Australia, Cape Verde, Italy, South Africa, Zimbabwe.