| Name | Macrosiphonia lanuginosa M. Martens & Galeotti |
| Authorship | M. Martens & Galeotti |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Macrosiphonia Müller Argoviensis |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Macrosiphonia lanuginosa M. Martens & Galeotti |
| Identification made in | [no date] (1) |