| Name | Oncidium osmentii Withner |
| Authorship | Withner |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Oncidium |
| GUID | urn:lsid:ipni.org:names:647390-1 |
| Citation | 1967 Amer. Orchid Soc. Bull. 36: 220 |
| Holdings | 7 Specimens held in the Harvard University Herbaria identified as Oncidium osmentii Withner |
| Identification made in | 1969 (6), 2001 (1) |