| Name | Rhabdadenia macrostoma (Bentham) Müller Arg. |
| Authorship | (Bentham) Müller Arg. |
| Rank | Species |
| Placed in | Rhabdadenia Müller Argoviensis |
| Citation | 1860 Linnaea 30: 435 |
| Holdings | 28 Specimens held in the Harvard University Herbaria identified as Rhabdadenia macrostoma (Bentham) Müller Arg. |
| Identification made in | [no date] (23), 1956 (1), 1966 (2), 1967 (1), 1981 (1) |