| Name | Sargassum thunbergii (Mertens ex Roth) Kuntze | 
| Authorship | (Mertens ex Roth) Kuntze | 
| Rank | Species | 
| NomenclaturalStatus | Unknown | 
| Placed in | Sargassum C. Agardh | 
| Contains | Sargassum thunbergii f. latifolium Yendo Sargassum thunbergii f. nipponicum Yendo Sargassum thunbergii f. swartzianum (Yendo) Okamura Sargassum thunbergii f. typicum Yendo | 
| Remarks | Created from Taxon Name Import: Sargassum thunbergii (Mertens ex Roth) Kuntze | 
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Sargassum thunbergii (Mertens ex Roth) Kuntze | 
| Identification made in | [no date] (2) | 
