| Name | Marasmius calopus (Persoon) Fries: Fries |
| Authorship | (Persoon) Fries: Fries |
| Rank | Species |
| Placed in | Marasmius |
| Citation | 1838 ["1836-1838"] Epicr. Syst. Mycol. (Upsaliae): 379 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Marasmius calopus (Persoon) Fries: Fries |
| Identification made in | [no date] (4) |