| Name | Begonia holttumii Irmscher |
| Authorship | Irmscher |
| Rank | Species |
| Placed in | Begonia Linnaeus |
| Citation | 1929 Mitt. Inst. Allg. Bot. Hamburg 8: 113 |
| Holdings | 8 Specimens held in the Harvard University Herbaria identified as Begonia holttumii Irmscher |
| Identification made in | [no date] (8) |
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