| Name | Begonia bayae S. Julia & Kiew |
| Authorship | S. Julia & Kiew |
| Rank | Species |
| Placed in | Begonia Linnaeus |
| Citation | 2016 Phytotaxa 252(1): 22 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Begonia bayae S. Julia & Kiew |
| Identification made in | [no date] (3) |