| Name | Astrothelium pyrenastraeum Nylander |
| Authorship | Nylander |
| Rank | Species |
| Placed in | Astrothelium Eschweiler |
| GUID | urn:lsid:indexfungorum.org:names:377850 |
| Citation | 1890 Lich. Jap. 109 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Astrothelium pyrenastraeum Nylander |
| Identification made in | [no date] (3) |
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