| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Heterocyathus hemisphaericus | Gray, 1849 | accepted name | Yes | senior synonym |
original combination |
| Heterocyathus hemispherica | Gray, 1849 | synonym | No | senior synonym |
original combination |
| ! Heterocyathus hemisphericus | Gray, 1849 | synonym | No | senior synonym |
original combination |
| Psammoseris hemisphericus | (Gray, 1850) | synonym | No | senior synonym |
new combination |