| Name | Leptodontium exasperatum Cardot |
| Authorship | Cardot |
| Rank | Species |
| Placed in | Leptodontium |
| Citation | 1909 Rev. Bryol. 36: 74 |
| Holdings | 12 Specimens held in the Harvard University Herbaria identified as Leptodontium exasperatum Cardot |
| Identification made in | [no date] (12) |