Chris O'Reilly / Honey fungus (Armillaria mellea) mature, fruiting bodies on a fallen tree with person walking, Mixed woodland, Autumn, Derbyshire, UK, October

Nigel Cattlin / Honey fungus (Armillaria mellea) rhizomorphs / fungal cords on dead core of rotten tree. Berkshire, England, UK. March.

Adrian Davies / Honey fungus (Armillaria mellea) at base of tree. Red cross on tree indicates it is diseased and will be cut down. Surrey, England, UK. October.

Chien Lee / Honey Fungus (Armillaria sp) mushrooms in rainforest, Maliau Basin, Sabah, Malaysia

Adrian Davies / Honey fungus (Armillaria mellea) Sussex, England, UK, October.

Adrian Davies / Honey fungus (Armillaria mellea) rhizomorphs / boot laces / mycelium. Sussex, UK, November.

Nick Upton / Large clump of Honey fungus (Armillaria mellea) growing on a treestump in deciduous woodland, near Olsztynek, Masuria, Poland, September.

Colin Varndell / Clump of Honey fungus (Armillaria mellea) Dorset, UK November.

Adrian Davies / Honey fungus (Armillaria mellea) showing 'bootlace' rhizomorphs. Sussex, UK, October.

Adrian Davies / Honey fungus (Armillaria mellea) showing 'bootlace' rhizomorphs. Sussex, UK, October.

Nick Upton / Large clump of honey fungus (Armillaria mellea) growing from rotting treestump, Gloucestershire, UK, October.

Nick Upton / Clump of honey fungus (Armillaria mellea) growing among leaf litter, Gloucestershire, UK, October.