| Name | Gigartina fastigiata Postels & Ruprecht |
| Authorship | Postels & Ruprecht |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Gigartina Stackhouse |
| Contains | Gigartina fastigiata var. tenuior Gray |
| Remarks | Created from Taxon Name Import: Gigartina fastigiata Postels & Ruprecht |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Gigartina fastigiata Postels & Ruprecht |
| Identification made in | [no date] (2) |