| Name | Pyrenula sexlocularis (Nylander) Müller Arg. |
| Authorship | (Nylander) Müller Arg. |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Pyrenula Acharius |
| Citation | 1877 Flora 60: 475 |
| Holdings | 15 Specimens held in the Harvard University Herbaria identified as Pyrenula sexlocularis (Nylander) Müller Arg. |
| Identification made in | [no date] (15) |