| Name | Sirosiphon saxicola Nägeli ex Kützing |
| Authorship | Nägeli ex Kützing |
| Rank | Species |
| Placed in | Sirosiphon Kützing |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Sirosiphon saxicola Nägeli ex Kützing |
| Identification made in | [no date] (2) |