| Name | Psathyrella roystoniae (Earle) Singer |
| Authorship | (Earle) Singer |
| Rank | Species |
| Placed in | Psathyrella |
| GUID | urn:lsid:indexfungorum.org:names:304313 |
| Citation | 1951 ["1949"] Lilloa 22: 470 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Psathyrella roystoniae (Earle) Singer |
| Identification made in | [no date] (1) |