| 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) |