| Name | Porotrichum plagiorhynchum Renauld & Cardot |
| Authorship | Renauld & Cardot |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Porotrichum |
| Citation | 1894 Bull. Soc. Roy. Bot. Belgique 32(1): 45 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Porotrichum plagiorhynchum Renauld & Cardot |
| Identification made in | [no date] (1), 2005 (1) |