| Name | Piper macedoi f. longispicum Yuncker |
| Authorship | Yuncker |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Piper macedoi Yuncker |
| GUID | urn:lsid:ipni.org:names:198362-2 |
| Citation | 1966 Bol. Inst. Bot. (Sao Paulo) 3: 52 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Piper macedoi f. longispicum Yuncker |
| Identification made in | [no date] (1) |