| Name | Piper kwashoense Hayata |
| Authorship | Hayata |
| Rank | Species |
| Placed in | Piper Linnaeus |
| Citation | 1911 J. Coll. Sci. Imp. Univ. Tokyo 30(1): 235 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Piper kwashoense Hayata |
| Identification made in | [no date] (2) |
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