| Name | Leptodontium arsenei Thériot |
| Authorship | Thériot |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Leptodontium |
| Citation | 1931 Smithsonian Misc. Collect. 85(4): 10 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Leptodontium arsenei Thériot |
| Identification made in | [no date] (2) |