Tim Laman / Strangler Fig (Ficus sp.) that has killed its host tree long ago. The host has rotted away, leaving a hollow center. Lowland rainforest in Borneo. Gunung Palung National Park, Indonesia.

Alex Hyde / Strangler fig (Ficus zarazalensis) aerial roots. In this instance the original host tree that the Strangler fig was climbing has been killed and rotted has away, leaving a hollow space in the middle....

Alex Hyde / Looking through the aerial roots of a Strangler fig (Ficus zarazalensis) the original host tree that the Fig was climbing has been killed and has rotted away, leaving a hollow space in the middle, spe...

Adrian Davies / Slime Mould (Reticularia lycoperdon) massed sporangia on rotting Birch log. Surrey, England, UK, August 2013.

Adrian Davies / Slime Mould (Reticularia lycoperdon) massed sporangia on rotting Birch log. Surrey, England, UK, August 2013.

Adrian Davies / Mould (Penicillin italicum) growing on a Satsuma (Citrus unshi)

Adrian Davies / Mould (Penicillin italicum) growing on a Satsuma (Citrus unshiu)

Tim Laman / Close up of Strangler Fig (Ficus sp.) that has killed its host tree long ago. The host has rotted away, leaving a hollow center. Lowland rainforest in Borneo. Gunung Palung National Park, Indonesia.

Dave Bevan / Woman forking well-rotted leaf mold from a big bag into a wheel barrow, UK, model released

Nigel Cattlin / Brown rot (Monilinia fructicola) on ripe Victoria plum fruit (Prunus domestica ssp. intermedia) on the tree and some gummosis, patches of a gummy substance, Berkshire, England, UK, August.

Nigel Cattlin / Grey mould (Botrytis cinerea) rotted Lemon fruit (Citrus limon) on the tree, Campania, Italy, May