| Name | Ralfsia clavata (Carmichael ex Harvey) P. Crouan & H. Crouan |
| Authorship | (Carmichael ex Harvey) P. Crouan & H. Crouan |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Ralfsia Berkeley |
| Contains | Ralfsia clavata f. laminariae Collins |
| Remarks | Created from Taxon Name Import: Ralfsia clavata (Carmichael ex Harvey) P. Crouan & H. Crouan |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Ralfsia clavata (Carmichael ex Harvey) P. Crouan & H. Crouan |
| Identification made in | [no date] (3) |