Hoekstra, P. H., L. W. Chatrou, and J. J. Wieringa. “A New Species of <em>Monanthotaxis</em> From Gabon With a Unique Inflorescence Type for Annonaceae”. Phytotaxa, vol. 186, no. 2, Nov. 2014, pp. 106–112, doi:10.11646/phytotaxa.186.2.5.