Isolona campanulata A flower, side view B flower, top view. Isolona congolana C flowering branch D base of leaf blade, top view E flower, top view F flower, bottom view G syncarpous fruit A, B no voucher, Bayang Mbo, Cameroon C–G Couvreur 1054, Mt Cameroon. Photos A, B Sonneck C–G Thomas L.P. Couvreur .

  Part of: Couvreur TLP, Dagallier L-PMJ, Crozier F, Ghogue J-P, Hoekstra PH, Kamdem NG, Johnson DM, Murray NA, Sonké B (2022) Flora of Cameroon – Annonaceae Vol 45. PhytoKeys 207: 1-532.