The caps are campanulate, pale grey-brown with a darker umbo and striations.  The gills are white to pale grey, and the stipe is dark at the base, paler towards the top.  It has a string iodoform (chemical) smell, especially when drying out.

Other small Mycena of grasslands and woodlands

microscope/smell

This is a difficult speces to identify with certainty unless it has been microscopically examined from a specimen.  Expert verification prior to submssion to NatureSpot is recommended.  Also photograph from top down, in side view and from underneath to show gills and full length of stipe.  Note any smell; note habitat and substrate.

Grasslnds and lawns, on buried rotting wood, and under trees.

Autumn

Common and widespread in Britain.

Fairly common in Leicestershire and Rutland.