Oncidium oliganthum (Rchb. f.) L.O. Williams in Lloydia 10(4): 212. 1948 sec. Soto-Arenas & al. 2007
- ≡Odontoglossum oliganthum Rchb. f. in Bonplandia 4(20): 321. 1856 syn. sec. Hágsater & Salazar 1990
- =Oncidium guatemalense Schltr. in Repert. Spec. Nov. Regni Veg. 10: 362. 1912 syn. sec. Solano Gómez & al. 2020
- =Odontoglossum purpusii Schltr. in Repert. Spec. Nov. Regni Veg. 21(601-605): 340. 1925 syn. sec. Solano Gómez & al. 2020