| Name | Hedwigia ciliata f. dentosa (M. Howe) G. N. Jones |
| Authorship | (M. Howe) G. N. Jones |
| Rank | Forma |
| Placed in | Hedwigia ciliata (Hedwig) Boucher |
| Citation | 1933 Moss Fl. N. Amer. 2: 46 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Hedwigia ciliata f. dentosa (M. Howe) G. N. Jones |
| Identification made in | [no date] (2) |