| Scientific Name | TSN | Taxon Author | Common Name | Name Source | Usage | Reason (ITIS) | Taxon Rank |
|---|
| Dumontia filiformis | 183096 | (Hornemann) Greville | | ITIS | not accepted | synonym of Dumontia incrassata | Species |
| Dumontia incrassata | 12242 | (O. F. Mueller) Lamouroux | | ITIS | accepted | | Species |
| Dumontia simplex | 12243 | | | ITIS | accepted | | Species |
| Ulva filiformis | 183097 | Hornemann | | ITIS | not accepted | synonym of Dumontia incrassata | Species |
| Ulva incrassata | 183095 | O. F. Mueller | | ITIS | not accepted | synonym of Dumontia incrassata | Species |
