| Name | Fissidens laxus Sull. & Lesq. |
| Authorship | Sull. & Lesq. |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Fissidens Hedwig |
| Citation | 1859 Char. New Musci p. 1 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Fissidens laxus Sull. & Lesq. |
| Identification made in | [no date] (1), 1984 (1), 1991 (1) |