Andy Sands / Common earthball (Scleroderma citrinum) on rotting leaves, two starting to split open to release spores. Buckinghamshire, England, UK, October. Focus stacked.

Andy Sands / Common earthball (Scleroderma citrinum) on rotting leaves, group of three showing one closed, one open with spores and one open and all spores released. Buckinghamshire, England, UK, October

Guy Edwardes / Common earth-ball fungus (Scleroderma citrinum). New Forest National Park, England, UK. September.

Linda Pitkin / Common earthball fungus (Scleroderma citrinum), Abinger Roughs NT, Surrey, England, October.

Linda Pitkin / Common earthball (Scleroderma citrinum), Abinger Roughs NT, Surrey, England, October.

Linda Pitkin / Common earthball fungus (Scleroderma citrinum), Black Park Country Park, Buckinghamshire, England, November.

David Pike / Common earthball fungus (Scleroderma citrinum), Hannicombe Wood, Dartmoor, Devon. October.

Robert Thompson / Common earthball fungus (Scleroderma citrinum), Tollymore Forest Park, Newcastle, Co. Down, Northern Ireland

Philippe Clement / Common earthballs (Scleroderma citrinum / Scleroderma aurantium) on the forest floor in autumn, France, November