| Name | Oncidium diffusum C. Schweinfurth |
| Authorship | C. Schweinfurth |
| Rank | Species |
| Placed in | Oncidium |
| GUID | urn:lsid:ipni.org:names:173996-2 |
| Citation | 1951 Fieldiana, Bot. XXVIII(1): 199 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Oncidium diffusum C. Schweinfurth |
| Identification made in | 2010 (1) |