| Name | Gigartina spinosa Greville |
| Authorship | Greville |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Gigartina Stackhouse |
| Contains | Gigartina spinosa var. Harvey (Grunow) Reichardt Gigartina spinosa var. pinnata Setchell Gigartina spinosa var. runcinata (Grunow) Reichardt |
| Remarks | Created from Taxon Name Import: Gigartina spinosa Greville |
| Holdings | 45 Specimens held in the Harvard University Herbaria identified as Gigartina spinosa Greville |
| Identification made in | [no date] (45) |