Date-coloured waxcap Hygrocybe spadicea
This fungus has a dark brown cap.
As its name suggests, this has a waxy feel. Underneath it has yellow gills and a yellow stalk.
Research is currently underway regarding the current status of this and related species, but it appears to be rare throughout the UK.
Old, short grassland, often pastures, lawns or churchyards, usually but not exclusively on chalky soils. It is also found on coastal dunes.
The main threat is habitat destruction or improvement through the application of fertilisers, or by stopping grazing or mowing.