| Mycena olida | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Agaricales |
| Family: | Mycenaceae |
| Genus: | Mycena |
| Species: | M. olida |
| Binomial name | |
| Mycena olida Bres. (1887) | |
| Synonyms | |
|
Hemimycena olida (Bres.) Singer | |
| Mycena olida | |
|---|---|
| Mycological characteristics | |
 | Gills on hymenium |
 | Cap is conical |
 | Hymenium is adnate |
 | Stipe is bare |
 | Spore print is white |
 | Ecology is saprotrophic |
 | Edibility is unknown |
Mycena olida, commonly known as the rancid bonnet, is a species of mushroom in the family Mycenaceae. It was first described in 1887 by Italian mycologist Giacomo Bresadola.