| Name | Scytosiphon lomentaria var. complanatus Rosenvinge |
| Authorship | Rosenvinge |
| Rank | Variety |
| NomenclaturalStatus | Unknown |
| Placed in | Scytosiphon lomentaria (Lyngbye) Link |
| Remarks | Created from Taxon Name Import: Scytosiphon lomentaria var. complanatus Rosenvinge |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Scytosiphon lomentaria var. complanatus Rosenvinge |
| Identification made in | [no date] (1) |