| Name | Pylaisia filari-acuminata Müller (of Halle) & Macoun |
| Authorship | Müller (of Halle) & Macoun |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Pylaisia Bruch & Schimper |
| Citation | 1892 Cat. Canad. Pl., Musci 174 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Pylaisia filari-acuminata Müller (of Halle) & Macoun |
| Identification made in | [no date] (1) |