1997 IUCN red list of threatened plants (1997)

Checklist of CITES Species (1998)

Checklist of CITES Species (1998)

Checklist of CITES Species and Annotated CITES Appendices and Reservations - Inskipp, Tim (CITES Secretariat, UNEP-WCMC, 2005)

Checklist of CITES Species: a reference to the appendices to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (2001)

Checklist of CITES Species: a reference to the appendices to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (1996)

Checklist of CITES Species: a reference to the appendices to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (2003)

Checklist of CITES Species: a reference to the appendices to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (2001)

Checklist of CITES Species: a reference to the appendices to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (2003)

Conservation and sustainable management of trees, report of the first regional workshop, held at Jameson Hotel, Harare, Zimbabwe 9-11 July, 1996 - WCMC (WCMC, 1996)

Modern systematic studies in African botany : proceedings of the eleventh plenary meeting of the Association for the Taxonomic Study of the Flora of Tropical Africa, Missouri Botanical Garden, St. Louis, June 10-14, 1985 ... - Lowry, Porter Prescott. (Missouri Botanical Garden, 1985)