Rytigynia celastroides var. celastroides [family RUBIACEAE], —Verdcourt in Kew Bull. 42: 171, fig. 8A (1987); in F.T.E.A., Rubiaceae: 824 (1991).
Vangueria glabra K. Schum. [family RUBIACEAE], in Engler, Pflanzenw. Ost-Afrikas C: 384 (1895). —De Wildeman in Bull. Jard. Bot. État 8: 52 (1922). Type from Tanzania.
Vangueria microphylla K. Schum. [family RUBIACEAE], in Engler, Pflanzenw. Ost-Afrikas C: 385 (1895); in Bot. Jahrb. Syst. 28: 494 (1900). —De Wildeman in Bull. Jard. Bot. État 8: 59 (1922), pro parte. Syntypes from Tanzania.
Vangueria oligacantha K. Schum. [family RUBIACEAE], in Bot. Jahrb. Syst. 34: 334 (1904). —De Wildeman in Bull. Jard. Bot. État 8: 60 (1922). Type from Tanzania.
Plectronia amaniensis K. Krause [family RUBIACEAE], in Bot. Jahrb. Syst. 43: 142 (1909). Syntypes from Tanzania.
Rytigynia microphylla K. Schum. Robyns [family RUBIACEAE], in Bull. Jard. Bot. État 11: 171 (1928). —Brenan, Check-list For. Trees Shrubs Tang. Terr.: 530 (1949). —Dale & Greenway, Kenya Trees & Shrubs: 472 (1961).
Rytigynia oligacantha K. Schum. Robyns [family RUBIACEAE], in Bull. Jard. Bot. État 11: 172 (1928). —Brenan, Check-list For. Trees Shrubs Tang. Terr.: 531 (1949). —Dale & Greenway, Kenya Trees & Shrubs: 471 (1961).
Rytigynia glabra K. Schum. Robyns [family RUBIACEAE], in Bull. Jard. Bot. État 11: 174 (1928). —Brenan, Check-list For. Trees Shrubs Tang. Terr.: 530 (1949).
Rytigynia amaniensis K. Krause Bullock [family RUBIACEAE], in Bull. Misc. Inform., Kew 1932: 389 (1932). —Brenan, Check-list For. Trees Shrubs Tang. Terr.: 531 (1949). —Dale & Greenway, Kenya Trees & Shrubs: 471 (1961).
Canthium frangula [family RUBIACEAE], sensu J.G. Garcia in Mem. Junta Invest. Ultramar 6 (sér. 2): 30 (1959) [Contrib. Conhec. Fl. Moçamb. IV (1959)], pro parte, quoad Torre 4887, non Hiern.