Nigel Cattlin / Powdery mildew (Erysiphales) developing on Sweet William (Dianthus barbatus) leaves. Berkshire, England, UK. October.

Nigel Cattlin / Powdery mildew (Erysiphales) developing on Sweet William (Dianthus barbatus) leaves. Berkshire, England, UK. October.

Nigel Cattlin / Black spot disease and chlorosis on Rose (Rosa sp) leaf caused by Fungus (Diplocarpon rosae). Berkshire, England, UK. August.

Nigel Cattlin / Lupin (Lupinus sp) leaves with powdery mildew caused by Fungus (Erysiphales). Cultivated in garden, Berkshire, England, UK. June.

Nigel Cattlin / Grey mould (Botrytis cinerea) spotting lesions on Rose (Rosa sp) flower caused by damp weather. Berkshire, England, UK. September.

Nigel Cattlin / Rose (Rosa sp), aborted bud diseased with Grey mould (Botrytis cinerea) after damp weather. Berkshire, England, UK. September.

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

Nigel Cattlin / Powdery mildew (Podosphaera pannosa) on Rose (Rosa sp) buds. Cultivated in garden, Berkshire, England, UK. June.

Nigel Cattlin / Powdery mildew (Podosphaera pannosa) on Rose (Rosa sp) leaves. Cultivated in garden, Berkshire, England, UK. June.

Robert Thompson / Jelly drops (Ascocoryne sarcoides) fungus growing on cut tree stumpPeatlands Park, Portadown, Co. Armagh, Northern Ireland. November

Robert Thompson / Jelly drops (Ascocoryne sarcoides)fungus on log, Peatlands Park, Portadown, Co. Armagh, Northern Ireland. November

Andy Sands / Spatula Fungi (Spathularia flavida) A small fungi that fruits under Larch trees, Buckinghamshire, England, UK, October

Robert Thompson / Black bulgar fungus (Bulgaria inquinans) growing amongst mosses, Tollymore Forest, County Down, Northern Ireland, UK. September.

Guy Edwardes / Jelly drops fungus (Ascocoryne sarcoides), New Forest, Hampshire, England, UK. November.

Adrian Davies / Bog beacon fungus (Mitrula paludosa) growing on peat. Surrey, England, UK. May.

Nick Upton / Black bulgar fungus (Bulgaria inquinans) growing from a rotting log in woodland, Gloucestershire, UK, October.

Nick Upton / Black bulgar fungus (Bulgaria inquinans) growing from a rotting log in woodland, Gloucestershire, UK, October.

Adrian Davies / Green elfcup fungus (Chlorociboria aeruginascens) Sussex, England, UK. September.

Robert Thompson / Lemon disco fungus (Bisporella citrina) Peatlands Park, County Armagh, Northern Ireland. October.

David Kjaer / Purple Jellydisc (Ascocoryne sarcoides) fungus, Wiltshire, England, UK, October.

Andy Sands / Black bulgar or Bachelor's Buttons (Bulgaria inquinans) a jelly fungus that grows on fallen Oak, Ash and other hardwood trees, Hertfordshire, Englkand, UK, September. Focus Stacked

Andy Sands / Jellybaby fungus (Leotia lubrica) inedible fungi that resemble jellybabies, Buckinghamshire, England, UK, September. Focus Stacked Image

Andy Sands / Black bulgar or Bachelor's Buttons (Bulgaria inquinans) a jelly fungus that grows on fallen Oak, Ash and other hardwood trees, Hertfordshire, Englkand, UK, September. Focus Stacked

Andy Sands / Black bulgar or Bachelor's Buttons (Bulgaria inquinans) a jelly fungus that grows on fallen Oak, Ash and other hardwood trees, Hertfordshire, Englkand, UK, September. Focus Stacked

Chris Mattison / Beech jellydisc fungus (Neobulgaria pura) Peak District, Derbyshire, UK, October. Image taken using digital focus-stacking.

Adrian Davies / Blue staining fungus / Green elfcup (Chlorociboria aeruginascens) fruiting bodies on rotting oak log. Sussex, UK, October.

Chris Mattison / Lemon Disco fungus (Bisporella citrina), growing on dead oak branch. Derbyshire, Peak District National Park, UK, October

Nick Upton / Green elfcup / Green stain fungus (Chlorociboria aeruginosa/aeruginascens) growing on a rotting log, GWT Lower Woods reserve, Gloucestershire, UK, November.

Chris Mattison / Beech jellydisc fungus (Neobulgaria pura) growing in Cypress-leaved plait moss (Hypum cupressiforme) Peak District National Park, Derbyshire, UK October

Andy Sands / Beech jellydisc (Neobulgaria pura) uncommon fungus that usually grows on fallen dead beech trees, Buckinghamshire, England, UK, October. Focus stacked image

Mike Read / Sycamore (Acer pseudoplatanus) cut out on white background, showing Tar-spot fungus (Rhytisma acerinum).

Alex Hyde / Beech jellydisc fungus (Neobulgaria pura) growing on the fallen trunk of a Beech tree (Fagus sylvatica). Peak District National Park, Derbyshire, UK. October.

Alex Hyde / Beech jellydisc fungus (Neobulgaria pura) growing on the fallen trunk of a Beech tree (Fagus sylvatica). Peak District National Park, Derbyshire, UK. October.

Alex Hyde / Beech jellydisc fungus (Neobulgaria pura) growing on the fallen trunk of a Beech tree (Fagus sylvatica). Peak District National Park, Derbyshire, UK. October.

Nick Upton / Black earth-tongue fungus (Geoglossum cookeianum), Whiteford Burrows, Gower Peninsula, Wales, UK, October.

Nick Upton / Black bulgar fungus (Bulgaria inquinans) growing on rotting oak log, GWT Lower Woods reserve, Gloucestershire, UK, October.

Nick Upton / Black bulgar fungus (Bulgaria inquinans) growing on rotting oak log, GWT Lower Woods reserve, Gloucestershire, UK, October.

Nick Upton / Purple jelly drops (Ascocoryne sarcoides / cylichnium) on rotting log, GWT Lower Woods reserve, Gloucestershire, UK, November.

Nick Upton / Yellow fairy cup / lemon disco fungus (Bisporella citrina) on rotting log, GWT Lower Woods reserve, Gloucestershire, UK, October.

Nick Upton / Green elfcup / green stain fungus (Chlorociboria aeruginosa/aeruginascens) on rotting log, GWT Lower Woods reserve, Gloucestershire, UK, October.

Nick Upton / Green elfcup / green stain fungus (Chlorociboria aeruginosa/aeruginascens) on rotting log, GWT Lower Woods reserve, Gloucestershire, UK, October.

Willem Kolvoort / Bog beacon (Mitrula paludosa) in small brook in central Holland.

Adrian Davies / Bog beacon fungus (Mitrula paludosa) growing in sphagnum bog. Torridon, Scotland, June.

Alex Hyde / Ascocoryne cylichnium fungus growing on rotting beech wood. Peak District National Park, Derbyshire, UK. November.

Chris Mattison / Purple jelly fungus (Ascotremella faginea) Derbyshire, England, UK, October.

Nigel Cattlin / Grey mould (Botrytis cinerea) on a large Sunflower flower as it begins to go to seed Berkshire, England, UK.

Nigel Cattlin / Grey mould (Botrytis cinerea) on a large Sunflower flower as it begins to go to seed Berkshire, England, UK.

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 / Powdery mildew (Podosphaera pannosa) heavy infection around the bases of rose buds 'American Pillar', June Berkshire, England, UK.

Nigel Cattlin / Black spot (Diplocarpon rosae) infection of leaves of an ornamental garden rose, Berkshire, July

Nigel Cattlin / Black spot (Diplocarpon rosae) infection of leaves of an ornamental garden rose, Berkshire, July

Nigel Cattlin / Black spot (Diplocarpon rosae) infection of leaves of an ornamental garden rose, Berkshire, July

Nigel Cattlin / Primary infection of Apple mildew (Podosphaera leucotricha) on a terminal leaf cluster at the end of the branch of an orchard tree, Berkshire, UK. June.

Nigel Cattlin / Primary infection of Apple mildew (Podosphaera leucotricha) on a terminal leaf cluster at the end of the branch of an orchard tree, Berkshire, UK. June.

Adrian Davies / Brown rot fungus (Monilinia fructicola) growing on Apples (Malus sp.), Surrey, UK. July.

Will Watson / Ash (Fraxinus excelsior) tree stump with Ash dieback disease (Hymenoscyphus pseudofraxineus) and tree heart rot, ancient woodland, Herefordshire Plateau, England, UK, April.

Will Watson / Ash (Fraxinus excelsior) trees with Ash dieback disease (Hymenoscyphus pseudofraxineus) being felled by tree surgeons with rope, ancient woodland, Herefordshire Plateau, England, UK, April. Model rele...

Will Watson / Felled trunks of Ash (Fraxinus excelsior) trees with Ash dieback disease (Hymenoscyphus pseudofraxineus), ancient woodland, Herefordshire Plateau, England, UK, April.

Will Watson / Felled trunk of Ash (Fraxinus excelsior) tree showing signs of Ash dieback disease (Hymenoscyphus pseudofraxineus), ancient woodland, Herefordshire Plateau, England, UK, April.

Will Watson / Felled trunks and stumps of Ash (Fraxinus excelsior) trees with Ash dieback disease (Hymenoscyphus pseudofraxineus), one showing tree heart rot, ancient woodland, Herefordshire Plateau, England, UK,...

Will Watson / Felled trunks of Ash (Fraxinus excelsior) trees with Ash dieback disease (Hymenoscyphus pseudofraxineus), with tree surgeon chipping branches behind, ancient woodland, Herefordshire Plateau, England,...

Will Watson / Felled Ash (Fraxinus excelsior) trunks infected with Ash Dieback Disease (Hymenoscyphus pseudofraxineus) being stacked on a trailer, Herefordshire Plateau, England, UK. June. 2023.

Will Watson / Tractor removing felled Ash (Fraxinus excelsior) trunks infected with Ash Dieback Disease (Hymenoscyphus pseudofraxineus) from ancient semi-natural woodland, Herefordshire Plateau, England, UK. June,...

Will Watson / Felled Ash (Fraxinus excelsior) trunks infected with Ash Dieback Disease (Hymenoscyphus pseudofraxineus) being stacked on a trailer, Herefordshire Plateau, England, UK. June. 2023.

Will Watson / Pile of felled Ash (Fraxinus excelsior) trunks infected with Ash Dieback Disease (Hymenoscyphus pseudofraxineus) in ancient semi-natural woodland, Herefordshire Plateau, England, UK. June.

Robert Thompson / Lemon disco fungus (Bisporella citrina) growing on decaying branch, Clare Glen, Tandragee, County Armagh, Northern Ireland, UK. December.

Nick Upton / Dead Ash trees (Fraxinus excelsior) killed by Ash dieback disease (Hymenoscyphus fraxineus) along riverbank, Wiltshire, UK. January.

Andy Sands / Bog beacon fungi (Mitrula paludosa) with Globular springtail (Collembola) resting on top, Buckinghamshire, England, UK, May. Focus stacked.

Andy Sands / Bog beacon fungi (Mitrula paludosa) in shallow water with Dance fly (Empididae sp) resting on top, Buckinghamshire, England, UK, May. Focus stacked.

Adrian Davies / Beech jellydisc fungus (Neobulgaria pura) growing on moss-covered log, Surrey, UK. October.

Will Watson / Ash dieback disease (Hymenoscyphus fraxineus) fruiting bodies on leaf stalk of Ash (Fraxinus excelsior), Herefordshire, England, UK. July. Focus stacked, controlled conditions.

Andy Sands / Group of Stalked hairy fairy cup fungi (Lachnum Niveum) trapping water drops in tiny hairs on stems. Buckinghamshire, England, UK. December. Focus Stacked.

Andy Sands / Green elf cup fungi (Chlorociboria aeruginascens) often staining decaying wood green. Hertfordshire, England, UK. August. Focus Stacked.

Andy Sands / Snowy disco cup fungi (Lachnum virgineum) showing globules of liquid trapped in hairs to keep moisture. Buckinghamshire, England, UK. November. Focus Stacked.

Will Watson / Ash dieback disease (Hymenoscyphus fraxineus) on pollarded Ash (Fraxinus excelsior) trees, with sheep grazing, Bircher Common, Croft Castle Estate, Herefordshire, England, UK. May.

Alex Hyde / Lemon disco fungus (Bisporella citrina) growing on dead branch on woodland floor, Peak District National Park, Derbyshire, UK. November.

Nigel Cattlin / Narcissus smoulder (Botrytis narcissicola) stem base sclerotia on a Narcissus (Narcissus sp.) plant stem.

Nigel Cattlin / Narcissus smoulder (Botrytis narcissicola) stem base sclerotia on a Narcissus (Narcissus sp.) plant stem.

Linda Pitkin / Beech jellydisc fungus (Neobulgaria pura) Selsdon Wood Nature Reserve, Surrey, England. October.

Nick Upton / Common ash trees (Fraxinus excelsior) killed by Ash dieback disease (Hymenoscyphus fraxineus) felled during major woodland management work, GWT Lower Woods, Gloucestershire, UK, October.

Nick Upton / Common ash trees (Fraxinus excelsior) killed by Ash dieback disease (Hymenoscyphus fraxineus) felled during major woodland management work, GWT Lower Woods, Gloucestershire, UK, October.

Nick Upton / Row of Common ash (Fraxinus excelsior) tree trunks killed by Ash dieback disease (Hymenoscyphus fraxineus) felled during woodland management works, GWT Lower Woods, Gloucestershire, UK, October.

Nick Upton / Common ash tree (Fraxinus excelsior) killed by Ash dieback disease (Hymenoscyphus fraxineus) felled during woodland management work with warning notice about forestry works, GWT Lower Woods, Glouceste...

Nick Upton / Common ash trees (Fraxinus excelsior) killed by Ash dieback disease (Hymenoscyphus fraxineus) felled during woodland management work, GWT Lower Woods, Gloucestershire, UK, April.

Nick Upton / Stack of Common ash (Fraxinus excelsior) tree trunks from trees killed by Ash dieback disease (Hymenoscyphus fraxineus) felled during woodland management work with warning notice about forestry works,...

Nigel Cattlin / Fruit rot (Botryotinia fuckeliana), sclerotia and mycelium on rotting Gooseberry fruit ( Ribes uva-crispa).

Nigel Cattlin / Stem rot (Sclerotinia sclerotiorum) sclerotia shown in a sectioned stem of Chilli pepper (Capsicum annuum), Thailand, South East Asia.

Nigel Cattlin / Light patches of grass infected with Dollar spot (Clarireedia sp.) on golf course with comparison to healthy treated area, USA.

Nigel Cattlin / Light patches of grass infected with Dollar spot (Clarireedia sp.) on golf course green, USA.

Nigel Cattlin / Cucumber powedery mildew (Podosphaera fuliginea) white fungal mycelium on leaves of a fruiting cucurbit plant, Berkshire, UK, September.

Nigel Cattlin / Brown rot (Monilinia fructigena) infection on a bunch of ripening Victoria plums (Prunus domestica) on the tree, Berkshire, UK, August.

Nigel Cattlin / Black spot (Diplocarpon rosae) necrotic dark spots of a fungus disease on the leaves of a garden rose, Berkshire, UK, July.

Colin Varndell / Tar spot fungus (Rhytisma acerinum) on a sycamore (Acer pseudoplatanus) leaf. Dorset, UK, September.

Nigel Cattlin / Black spot (Diplocarpon rosae) necrotic dark lesions and chlorosisd on a shrub garden rose (Rosa sp.) leaf, Berkshire, England, May

Robert Thompson / Sulphur tuft toadstool (Hypholoma fasciculare) and Lemon disco toad stool (Bisporella citrina) Clare Glen, Tandragee, County Armagh, Northern Ireland, UK.

Robert Thompson / Snowy disco fungus (Lachnum virgineum) Gosford Forest Park, County Armagh, Northern Ireland.