| Name | Hymenostylium firmum (Müller Halle) Brotherus |
| Authorship | (Müller Halle) Brotherus |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Hymenostylium |
| Citation | 1933 Bull. Bernice P. Bishop Mus. 101: 80 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Hymenostylium firmum (Müller Halle) Brotherus |
| Identification made in | [no date] (1) |