Stelis nigriflora (L.O. Williams) Pridgeon & M.W. Chase, Lindleyana 16(4): 264. 2001 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.
- ≡Pleurothallis nigriflora L.O. Williams, Amer. Orchid Soc. Bull. 11: 168. 1942 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.
- =Effusiella nigriflora (L.O. Williams) Luer, Monogr. Syst. Bot. Missouri Bot. Gard. 112: 107. 2007 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.