| Name | Thelotrema microstomum Müller Argoviensis |
| Authorship | Müller Arg. |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Thelotrema Acharius |
| GUID | urn:lsid:indexfungorum.org:names:407380 |
| Citation | 1891 Flora 74: 113 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Thelotrema microstomum Müller Argoviensis |
| Identification made in | [no date] (2), 1970 (1), 1972 (1), 2008 (1) |