| Name | Porothamnium |
| Authorship | |
| Rank | Genus |
| NomenclaturalStatus | NomLeg |
| Placed in | Neckeraceae |
| Contains | Porothamnium bigelovii (Sullivant) M. Fleischer Porothamnium comorense (Hampe ex Müller Halle) Sim Porothamnium crassipes (Renauld & Cardot) M. Fleischer Porothamnium fasciculatum (Swartz ex Hedwig) M. Fleischer Porothamnium filiferum (Mitten) M. Fleischer Porothamnium natalense (Müller Halle) M. Fleischer Porothamnium sp. |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Porothamnium |
| Identification made in | [no date] (1) |