This is a tough-skinned, potato-shaped earthball with coarse scales. It has light yellowish-brown skin, which when cut open reveals masses of black spores. Fruit body up to 15cm wide.
It fruits summer to late autumn. It grows singly or in groups in woodland or on banks and heaths, favouring acid soils. Very common and widespread.
Photograph of Common Earthball (Scleroderma citrinum), taken July 2015, local field , Staffordshire. © Pete Hillman 2015. Camera used Nikon D3200, with Sigma 105mm macro lens.