Isolona zenkeri A tree in rain forest B detail of funneled trunk C detail of leaves, upper side, note raised midrib D flowers, side view, note erect lobes E flowering and fruiting branch A, B Sosef 2291, Gabon C Sosef 2350, Gabon D, E Sosef 2322, Gabon. Photos 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. https://doi.org/10.3897/phytokeys.207.61432