| Nominal Species (n = 4) | Present allocation (n = 3) | Ref. |
|---|---|---|
| Halosaccion americanum Lee, 1982 | Halosaccion americanum | 3477 |
| Palmaria callophylloides Hawkes & Scagel | Palmaria callophylloides | 80701 |
| Rhodymenia georgica Reinsch, 1888 | Palmaria georgica | 80701 |
| Rhodymenia palmatiformis Skottsberg, 1919 | Palmaria georgica | 80701 |