| Name | Piper graeffei Warburg |
| Authorship | Warburg |
| Rank | Species |
| Placed in | Piper Linnaeus |
| Citation | 23 Dec 1898 Bot. Jahrb. Syst. 25(5): 610 |
| Holdings | 9 Specimens held in the Harvard University Herbaria identified as Piper graeffei Warburg |
| Identification made in | [no date] (9) |