[1] Tropical Plant Exploration Group (TroPEG) Cameroon, Ndian Division
[2] Forest Global Earth Observatory (ForestGEO), Smithsonian Tropical Research Institute, Botany Department, NMNH-MRC 166, Smithsonian Institution, Washington, DC, 20013-7012
[3] Department of Botany and Plant Physiology, University of Buea, Buea, Southwest