F. N.  Hepper, ?Triuridaceae?, in Flora of West Tropical Africa, 2nd Ed., vol. 3, London: The Crown Agents for Oversea Governments and Administration, 1968, pp. 14-15.

F. N.  Hepper, ?Burmanniaceae?, in Flora of West Tropical Africa, 2nd Ed., vol. 3, London: The Crown Agents for Oversea Governments and Administration, 1968, pp. 176 - 180.