Nigel Cattlin / Apple (Malus domestica) fruits infected with Brown rot (Monilinia spp.). Berkshire, England, UK. September.

Nigel Cattlin / Downy mildew (Peronospora parasitica) mycelium and lesion on underside of Oilseed rape (Brassica napus napus) leaf.

Nigel Cattlin / Yeasts and fungal mycelium culture contamination on culture nutrient Agar petri dish.

Bruno D'Amicis / Fungal hyphae in decaying wood in old-growth Beech (Fagus sylvatica) forest. Abruzzo, Lazio and Molise National Park / Parco Nazionale d'Abruzzo, Lazio e Molise UNESCO World Heritage Site Italy. O...

Stephen Dalton / Fungus mycelium growing under bark of tree (Fungal growth)

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

Alex Hyde / Fungal mycelium from an unidentified species of fungus, growing across a decomposing leaf. The mycelium is the vegetative part of the fungus and is made up of a mass of thread-like hyphae. Osa Peninsu...

Adrian Davies / Fungal mycelium on underside of rotting log in ancient woodland. Sussex, England, UK, November.

Adrian Davies / Leaf litter and fungal mycelium in primary rain forest, Sabah, Borneo.

Adrian Davies / Fungal hyphae (mycelium) on leaf on woodland floor. Surrey, England, UK, November.

Alex Hyde / Fungal mycelium from an unidentified species of fungus, revealed underneath the bark of a rotting tree branch. Peak Disrtict National Park, Derbyshire, UK, October.

Piotr Naskrecki / Sac Fungus (Cordyceps sp) mycelium covering cricket that was parasitized and killed by the fungus, Sipaliwini, Surinam