| Name | Herbertus aduncus subsp. tenuis (A. W. Evans) H. A. Miller & E. B. Scott |
| Authorship | (A. Evans) H. A. Miller & E. B. Scott |
| Rank | Subspecies |
| Placed in | Herbertus aduncus (Dickson) Gray |
| Citation | 1960 Rev. Bryol. Lichenol. 29: 29 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Herbertus aduncus subsp. tenuis (A. W. Evans) H. A. Miller & E. B. Scott |
| Identification made in | [no date] (3) |