| Name | Gymnothamnion J. Agardh |
| Authorship | J. Agardh |
| Rank | Genus |
| Placed in | Ceramiaceae |
| Contains | Gymnothamnion bipinnatum Collins & Hervey Gymnothamnion sp. |
| Remarks | Type Species: G. elegans (Schousboe ex C. Agardh) J. Agardh (Callithamnion elegans Schousboe ex C. Agardh) |
| Citation | 1892 Acta Univ. Lund. 28(6): 27, t. 1, figs. 11-14 |