| Name | Piper retrofractum Vahl |
| Authorship | Vahl |
| Rank | Species |
| Placed in | Piper Linnaeus |
| Citation | 1804 Enum. Pl. [Vahl] 1: 314 |
| Holdings | 70 Specimens held in the Harvard University Herbaria identified as Piper retrofractum Vahl |
| Identification made in | [no date] (70) |
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