| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Cacospongia friabilis | Polejaeff, 1884 | synonym | No | senior synonym |
original combination |
| Cacospongia fribilis | Polejaeff, 1884 | synonym | No | junior synonym |
original combination |
| Ircinia friabilis | (Polejaeff, 1884) | accepted name | Yes | senior synonym |
new combination |