1Université de Kinshasa, Ecole Régionale Post-Universitaire d’Aménagement et de Gestion Intégrés des Forêts et Territoires Tropicaux, ERAIFT, Kinshasa, Democratic Republic of Congo.
2Millennium Ecologic Museum, Natural history museum, Yaounde, Cameroon.
3University of Yaounde I, Department of pharmaceutical science and traditional medicine, Yaounde, Cameroon.
4World Resource Agroforestry, ICRAF-WCA, Yaounde, Cameroon.
5University of Bamenda, Faculty of Sciences, Bamenda, Cameroon.
6Universite Libres de Bruxelles, Herbarium and African library, Belgium.
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