| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Iluanthos laevis | Verrill, 1864 | synonym | No | senior synonym |
original combination |
| ! Ilyanthus lævis | Verrill | synonym | No | senior synonym |
original combination |
| ! Ilyanthus laevis | Verrill, 1864 | synonym | No | senior synonym |
original combination |
| Mesacmaea laevis | (Verrill, 1864) | accepted name | Yes | senior synonym |
new combination |