Zemagho, L., O. Lachenaud & B. Sonké (2018). Four new species of Sabicea (Rubiaceae) from tropical Africa, with additional notes on the genus. In English, English and French abstracts. Candollea 73: 277–293. DOI: http://dx.doi.org/10.15553/c2018v732a12
Four new species of Sabicea Aubl. (Rubiaceae) from tropical Africa are described and illustrated: Sabicea desseinii Zemagho, O. Lachenaud & Sonké from Cameroon, Gabon and Equatorial Guinea, Sabicea ezangae Zemagho, O. Lachenaud & Sonké from Gabon, Sabicea jongkindii Zemagho, O. Lachenaud & Sonké from Liberia and Ghana, and Sabicea uniflora Zemagho, O. Lachenaud & Sonké from Gabon. Their affinities are discussed, and the conservation status of each species is assessed. Sabicea speciosissima K. Schum. is excluded from the genus, neotypified, and synonymised with Rothmannia octomera (Hook.) Fagerl. Three other species are sunk into synonymy: Sabicea gigantea Wernham with Sabicea dewevrei De Wild., Sabicea arachnoidea Hutch. & Dalziel with Sabicea discolor Stapf, and Sabicea neglecta Hepper with Sabicea speciosa K. Schum. Lectotypes are designated for these six names.