| Name | Ceramium fastigiatum f. flaccidum H.E.Petersen |
| Authorship | H. E. Petersen |
| Rank | Forma |
| NomenclaturalStatus | Unknown |
| Placed in | Ceramium fastigiatum Harvey |
| Remarks | Created from Taxon Name Import: Ceramium fastigiatum f. flaccidum H.E.Petersen |
| GUID | urn:lsid:marinespecies.org:taxname:553663 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Ceramium fastigiatum f. flaccidum H.E.Petersen |
| Identification made in | [no date] (1) |