SECTION Serpentia
- Oncidium anguloi P.Ortiz 2012 Colombia
- Oncidium globuliferum Kunth 1816Costa Rica, Panama, Venezuela, Colombia, Ecuador and Peru
- Oncidium harlingii Stacy 1978 Ecuador
- Oncidium palaciosii Dodson 1996 Ecuador
- Oncidium sancti-pauli Kraenzl. 1922 Venezuela and Colombia
- Oncidium scansor Rchb. f. 1849-50 Venezuela, Colombia, Ecuador, Peru and Bolivia
- Oncidium serpens Lindl. 1833 Colombia, Ecuador and Peru
- Oncidium trachycaulon Schltr. 1920 Colombia and Ecuador