A large mushroom with a greyish brown cap, initially convex then flattening; radially fibrillose and often cracking in mature specimens.   The gills are widely spaced, whitish to beige.  The stem is white to beige, fibrillose, and with mycelial cords - the 'white laces' - at the base. 

mycelial cords

Photograph from top down, in side-view and underneath to show gills; ensure your photo clearly shows the length of the stipe from gills to base including mycelial cords.  You must note substrate and habitat.

Found on stumps or buried wood of deciduous trees.

It can be found at most times of year during mild periods.

Widespread and fairly common in Britain.

Fairly frequent in Leicestershire and Rutland.

This species is currently 'Incertae sedis' - i.e. not assigned to a Family in the Agaricales (see NBN and CABI database}. We have retained it in Marasmiaceae because some sources (inc. the BMS GB Checklist) place it in here.  In other sources it appears under Porotheleaceae (see Kibby, V2 2020)