A small fungus associated with mosses.  The caps are convex, becoming deeply funnelled and with a wavy edge when mature.  The caps are dark grey or greyish-brown, drying to a paler brown, and the stem is pale. The gills are deeply decurrent and widely spaced.

Other Arrhenia of similar shape. A rustica is very similar (ref. Kibby Vol.2), but needs to be examined microscopically to separate, 

microscope

Identification can be difficult and we recommend that your record is verfied by an expert from a specimen before you send in to NatureSpot,  also noting habitat, substrate and size. 

Saprophytic on mosses on alkaline soil.

September to November in Britain and Ireland.

Status in Leicestershire and Rutland not known.