| Name | Haplohymenium densum Schimper |
| Authorship | Schimper |
| Rank | Species |
| Placed in | Haplohymenium |
| Citation | 1872 Mém. Soc. Sci. Nat. Cherbourg 16: 233 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Haplohymenium densum Schimper |
| Identification made in | [no date] (2) |