| Name | Piper yousei Trelease |
| Authorship | Trelease |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Piper Linnaeus |
| GUID | urn:lsid:ipni.org:names:199588-2 |
| Citation | 1938 Publ. Field Mus. Nat. Hist., Bot. Ser. 17: 355 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Piper yousei Trelease |
| Identification made in | [no date] (2), 1986 (1) |