| Name | Polysiphonia tenebrosa Harvey |
| Authorship | Harvey |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Polysiphonia Greville |
| Remarks | Created from Taxon Name Import: Polysiphonia tenebrosa Harvey |
| GUID | urn:lsid:marinespecies.org:taxname:497533 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Polysiphonia tenebrosa Harvey |
| Identification made in | [no date] (1) |
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