| Name | Pyrenula acutalis R. C. Harris | 
| Authorship | R. C. Harris | 
| Rank | Species | 
| Placed in | Pyrenula Acharius | 
| Citation | 1989 Mem. New York Bot. Gard. 49: 85 | 
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Pyrenula acutalis R. C. Harris | 
| Identification made in | 2016 (1) |