| Name | Hymenophyllum pachydermicum Cesati |
| Authorship | Cesati |
| Rank | Species |
| Placed in | Hymenophyllum Smith |
| Citation | 1876 Atti Accad. Pontan. 7(8): 8 |
| Holdings | 8 Specimens held in the Harvard University Herbaria identified as Hymenophyllum pachydermicum Cesati |
| Identification made in | [no date] (4), 1999 (4) |