| 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) |