| Name | Macrosiphonia brachysiphon (Torrey) A. Gray |
| Authorship | (Torrey) A. Gray |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Macrosiphonia Müller Argoviensis |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Macrosiphonia brachysiphon (Torrey) A. Gray |
| Identification made in | [no date] (2) |