| Name | Polysiphonia deusta (Roth) Sprengel |
| Authorship | (Roth) Sprengel |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Polysiphonia Greville |
| Remarks | Created from Taxon Name Import: Polysiphonia deusta (Roth) Sprengel |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Polysiphonia deusta (Roth) Sprengel |
| Identification made in | [no date] (1) |