| Name | Mycosphaerella pachyasca (Rostrup) Vestergren |
| Authorship | (Rostrup) Vestergren |
| Rank | Species |
| Placed in | Mycosphaerella |
| Citation | 1900 Bih. Kongl. Svenska Vetensk.-Akad. Handl. Afd. 3 26: 7 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Mycosphaerella pachyasca (Rostrup) Vestergren |
| Identification made in | [no date] (1) |