| Name | Pyrenula occidentalis (R. C. Harris) R. C. Harris |
| Authorship | (R. C. Harris) R. C. Harris |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Pyrenula Acharius |
| Citation | 1987 Mycotaxon 28(1): 96 |
| Holdings | 11 Specimens held in the Harvard University Herbaria identified as Pyrenula occidentalis (R. C. Harris) R. C. Harris |
| Identification made in | [no date] (11) |