| Nominal Species (n = 5) | Present allocation (n = 5) | Ref. |
|---|---|---|
| Ectocarpus chnoosporae Børgesen, 1924 | Ectocarpus chnoosporae | 80701 |
| Ectocarpus confervoides Le Jolis, 1863 | Ectocarpus siliculosus | 3477 |
| Ectocarpus cryptophilus Børgesen | Ectocarpus cryptophilus | 80701 |
| Ectocarpus fasciculatus Harvey | Ectocarpus fasciculatus | 80701 |
| Ectocarpus rallsiae Vickers, 1905 | Ectocarpus rallsiae | 3477 |