1997 IUCN red list of threatened plants (1997)

Adansonia - Muséum national d'histoire naturelle (France) (Muséum d'histoire naturelle, Laboratoire de Phanérogamie, 1969)

Adansonia - Muséum national d'histoire naturelle (France) (Muséum d'histoire naturelle, Laboratoire de Phanérogamie, 1969)

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Annonacées - Laboratoire de phanérogamie, Paris (1969)

Botanical Exploration of Southern Africa : :An illustrated history of early botanical literature on the Cape Flora, Biographical accounts of the leading plant collectors and their activities in southern Africa form the days of the East India Company until the modern times - Glen, H.F. (SANBI, 2010)

Bulletin - East Africa Natural History Society. (East Africa Natural History Society, 1990)

The description of a new genus and twenty-three new species of Metarbelidae (Lepidoptera : Cossoidea) from the lowland tropical rain forests of the Guineo-Congolian Region with notes on habitats and biogeography - Lehmann, Ingo (Hamburger, 2011)

The description of a new genus and twenty-three new species of Metarbelidae (Lepidoptera : Cossoidea) from the lowland tropical rain forests of the Guineo-Congolian Region with notes on habitats and biogeography - Lehmann, Ingo (Hamburger, 2011)

Malimbus : journal of the West African Ornithological Society - West African Ornithological Society. (Ahmadu Bello University Press, 2006)

Memoirs of the California Academy of Sciences - California Academy of Sciences (The Academy, 2004)

Memoirs of the California Academy of Sciences - California Academy of Sciences (The Academy, 2004)

Memoirs of the California Academy of Sciences - California Academy of Sciences (The Academy, 2004)

Memoirs of the California Academy of Sciences - California Academy of Sciences (The Academy, 2004)

Memoirs of the California Academy of Sciences - California Academy of Sciences (The Academy, 2004)

Memoirs of the California Academy of Sciences - California Academy of Sciences (The Academy, 2004)

Memoirs of the California Academy of Sciences - California Academy of Sciences (The Academy, 2004)

Nzayilu N'ti : Guide des arbres et arbustes de la région de Kinshasa - Brazzaville - Robbrecht, Elmar (1993)