Cap pale-brown or greyish-brown, drying to a pale grey; intiially conical and becoming bell-shaped; smooth.   The mottled gills have a white edge.  The English name comes from the fragments of the veil left hanging from the rim of the cap.

other Mottlegills

Photograph top-down, in side view and underneath to show gills; note habitat and substrate.

On herbivore dung in grassland

Peaking in autumn.

Fairly frequent and widespread in Britain.

Fairly common in Leicestershire and Rutland.

https://www.first-nature.com/fungi/panaeolus-papilionaceus.php