A small to medium sized puffball, up to 6cm diameter.  The thick outer layer is chalky white and smooth but soon cracks and falls away to reveal the the inner dark-brown layer over the spores.  Spores are dispersed via an apical pore or slit.  

It is similar to the Grey Puffball, Bovista plumbea, but is larger and has a brown spore sac when mature, not grey like B. plumbea.

Photograph showing inner and outer layers of skin; note size (diameter), habitat and substrate

Grassland

Occasional in Leicestershire and Rutland.