Oncidium pergamineum Lindl. Oncidium pergamineum Lindl., Pl. Hartw.: 93. 1842 sec. Soto-Arenas & al. 2007=Oncidium tenue Lindl. in J. Hort. Soc. London 3: 76. 1848 syn. sec. Soto-Arenas & al. 2007