CAUCANTHUS auriculatus (Radlk.) Niedenzu [family MALPIGHIACEAE], in Arb. Bot. Inst. Akad. Braunsberg 6: 18 (1915) & in Vorl. Akad. Braunsberg S.-Sem. 1924: 2 (1924) & in E.P. IV. 141: 35, fig. 11/N, 0 (1928); T.T.C.L.: 296 (1949); E.P.A.: 403 (1956); Launert in Bol. Soc. Brot., sér. 2, 35: 48, t. 5 (1961) & in F.Z. 2: 119, t. 16 (1963). Type: Kenya, Kitui, Hildebrandt 2821 (M, holo.!, BM, K, iso. !)
Triaspia auriculata Radlk. [family ], in Abhandl. Naturw. Ver. Bremen 8: 379 (1883); Engl., P.O.A. A: 57 (1895), in obs.
Caucanthus argenteus Niedenzu [family MALPIGHIACEAE], in Bull. Herb. Boiss., sér. 2, 4: 1010 (1904). Type: Mozambique, Boruma, Menyhart 964 (B, holo. †)
?Caucanthus cinereus Niedenzu [family ], in Bull. Herb. Boiss., sér. 2, 4: 1011 (1904) & in Arb. Bot. Inst. Akad. Braunsberg 6: 18 (1915) & in E.P. IV. 141: 35 (1928). Type: Kenya, without precise locality, Kaiser (B, holo. †)