| Name | Sargassum spathulifolium f. suboppositum (Grunow) Grunow |
| Authorship | (Grunow) Grunow & 1916 |
| Rank | Forma |
| NomenclaturalStatus | Unknown |
| Placed in | Sargassum spathulifolium J. Agardh |
| Remarks | Created from Taxon Name Import: Sargassum spathulifolium f. suboppositum (Grunow) Grunow, 1916 |