| Name | Ruthnielsenia |
| Authorship | |
| Rank | Genus |
| NomenclaturalStatus | Unknown |
| Placed in | Ulvaceae J. V. Lamouroux ex Dumortier |
| Contains | Ruthnielsenia sp. Ruthnielsenia tenuis (Kylin) C.J.O'Kelly, B.Wynsor & W.K.Bellows |
| Remarks | Created from Taxon Name Import: Ruthnielsenia |