| 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) | 
