The ferns and fern-allies of West Tropical Africa being a supplement to the second edition of 'The flora of west tropical Africa' - Alston, A. H. G. 1902-1958 (Crown Agents for oversea Governments and Administrations, 1959)
Erg. zu: Flora of west tropical Africa / by J. Hutchinson and J. M. Daziel ; 2. ed.