| Apart from this there is not much to say about this plant. Its big, rough leaves are long decurrent. |
| The gills are fine, closely set and decurrent, meaning that they run down the stalk. |
| It is easily distinguished from Collybia and Mycena by its decurrent gills. |
| Leaves: Alternate, narrow-stalked, shortly decurrent or usually not decurrent. |
| The leaves are strongly decurrent and apparently did not become detached readily. |
| The C. deceptive should have pale pinkish spore print, adnate to decurrent gills about the same colour of the cap, which should be pale brown or greyish with incurved margins. |
