| Name | Sargassum natans (Linnaeus) Gaillon |
| Authorship | (Linnaeus) Gaillon |
| Rank | Species |
| Placed in | Sargassum C. Agardh |
| GUID | urn:lsid:marinespecies.org:taxname:145560 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Sargassum natans (Linnaeus) Gaillon |
| Identification made in | [no date] (2) |