| Name | Piper rio-cauchosanum Yuncker |
| Authorship | Yuncker |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Piper Linnaeus |
| Citation | 1950 Piperac. N. South Amer. 1: 30, fig. 22 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Piper rio-cauchosanum Yuncker |
| Identification made in | [no date] (2) |
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