Oestlundia ligulata (Lex.) Soto Arenas, Icon. Orchid. 10: t. 1057. 2008 sec. Ulloa Ulloa & al. 2018
- =Epidendrum tenuissimum Ames, F.T. Hubb. & C. Schweinf. in Bot. Mus. Leafl. 3: 15-16. 1934 syn. sec. Dressler & Pollard 1976
- =Encyclia tenuissima (Ames, F.T. Hubb. & C. Schweinf.) Dressler in Brittonia 13(3): 265. 1961 syn. sec. Soto-Arenas & al. 2007
- =Oestlundia tenuissima (Ames, F.T. Hubb. & C. Schweinf.) W.E. Higgins in Selbyana 22(1): 4. 2001 syn. sec. Soto-Arenas & al. 2007