| Name | Fissidens longidecurrens Thériot |
| Authorship | Thériot |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Fissidens Hedwig |
| Citation | 1926 Smithsonian Misc. Collect. 78(2): 10 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Fissidens longidecurrens Thériot |
| Identification made in | [no date] (1) |