| Name | Scytonema gracillimum Kützing |
| Authorship | Kützing |
| Rank | Species |
| NomenclaturalStatus | NomInvalid |
| Placed in | Scytonema C. Agardh ex Bornet & Flahault |
| Remarks | Bornet and Flahault (Ann. Sci. Nat. Bot. ser. 7, 5: 101-102. 1887) treated S. gracillimum as a synonym of S. figuratum. |
| Citation | 1843 Phycol. General. 215 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Scytonema gracillimum Kützing |
| Identification made in | [no date] (2) |