| Name | Mycena constans (Peck) Saccardo | 
| Authorship | (Peck) Saccardo | 
| Rank | Species | 
| Placed in | Mycena | 
| Citation | 1887 Syll. Fung. (Abellini) 5: 296 | 
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Mycena constans (Peck) Saccardo | 
| Identification made in | [no date] (1) |