| Name | Begonia oblongata Merrill |
| Authorship | Merrill |
| Rank | Species |
| Placed in | Begonia Linnaeus |
| Citation | 1912 Philipp. J. Sci., C. 7: 310 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Begonia oblongata Merrill |
| Identification made in | [no date] (5) |