van der Burgt, X. M., Ngansop Tchatchouang, E., & Tchiengué, B. (2025). Plagiosiphon intermedium (Leguminosae, Detarioideae), a new tree species from the Ngovayang forest in Cameroon. Webbia, 80(2), 175–181. https://doi.org/10.36253/jopt-18480