| Name | Fissidens insularis Thériot |
| Authorship | Thériot |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Fissidens Hedwig |
| Citation | 1910 Bull. Acad. Int. Géogr. Bot. 20: 98 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Fissidens insularis Thériot |
| Identification made in | [no date] (2) |