Ornithocephalus inflexus Lindl., Ann. Nat. Hist. 4(26): 384. 1840 sec. Salazar, G. A., Solano, R., Jiménez-Machorro, R., Carnevali, G., Hágsater, E. & Sosa, V. 2025: Revision of taxa, names and designations of Orchidaceae for the eFloraMEX.
- =Ornithocephalus gladiatus Hook., Exot. Fl. 2: t. 127. 1824 syn. sec. Salazar, G. A., Solano, R., Jiménez-Machorro, R., Carnevali, G., Hágsater, E. & Sosa, V. 2025: Revision of taxa, names and designations of Orchidaceae for the eFloraMEX.
- =Ornithocephalus mexicanus A. Rich. & Galeotti, Ann. Sci. Nat., Bot., sér. 3, 3: 24. 1845 syn. sec. Salazar, G. A., Solano, R., Jiménez-Machorro, R., Carnevali, G., Hágsater, E. & Sosa, V. 2025: Revision of taxa, names and designations of Orchidaceae for the eFloraMEX.