| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Euchema echinocarpum | Areschoug | synonym | No | junior synonym |
original combination |
| Eucheuma schrammii | (P.L.Crouan & H.M.Crouan) J.Agardh, 1892 | synonym | No | junior synonym |
new combination |
| Meristiella gelidium | (J.Agardh) D.P.Cheney & P.W.Gabrielson, 1987 | synonym | No | senior synonym |
original combination |
| Meristotheca gelidium | (J.Agardh) E.J.Faye & M.Masuda in E.J. Faye, Shimada, Kogame & Masuda, 2004 | accepted name | Yes | senior synonym |
new combination |