Wyre Forest Study Group – Biological Records
Species List: Fungi of Wyre
Species Count: 2172
Date Compiled: 29/11/2017
| Latin Name | Common Name | Order | Wyre Forest Status |
|---|---|---|---|
| Abortiporus biennis | Polyporales | Occasional | |
| Acanthophiobolus helicosporus | Ascomycetes | Rare | |
| Acrospermum compressum | Ascomycetes | Occasional | |
| Agaricus arvensis | Horse Mushroom | Agaricales | Common |
| Agaricus augustus | The Prince | Agaricales | Occasional |
| Agaricus bernardii | Agaricales | Rare | |
| Agaricus bisporus | Cultivated Mushroom | Agaricales | Occasional |
| Agaricus bresadolanus | Agaricales | Rare | |
| Agaricus campestris | Field Mushroom | Agaricales | Common |
| Agaricus campestris var. campestris | Field Mushroom | Agaricales | Common |
| Agaricus cappellianus (as Agaricus vaporarius) | Agaricales | ||
| Agaricus comtulus | Agaricales | Occasional | |
| Agaricus dulcidulus (A.semotus) | Agaricales | Rare | |
| Agaricus lanipes | Agaricales | Rare | |
| Agaricus macrocarpus | Agaricales | Occasional | |
| Agaricus moelleri | Inky Mushroom | Agaricales | Common |
| Agaricus porphyrizon | Lilac Mushroom | Agaricales | Rare |
| Agaricus porphyrocephalus | Agaricales | Rare | |
| Agaricus semotus | Agaricales | Rare | |
| Agaricus silvaticus | Blushing Wood Mushroom | Agaricales | Frequent |
| Agaricus silvicola | Wood Mushroom | Agaricales | Abundant |
| Agaricus silvicola var. silvicola | Wood Mushroom | Agaricales | Abundant |
| Agaricus subperonatus (A. vaporarius/pseudovillaticus) | Agaricales | Rare | |
| Agaricus urinascens var. urinascens | Macro Mushroom | Agaricales | Rare |
| Agaricus xanthodermus | Yellow Stainer | Agaricales | Occasional |
| Agrocybe arvalis | Agaricales | Rare | |
| Agrocybe erebia | Dark Fieldcap | Agaricales | Occasional |
| Agrocybe molesta (A.dura) | Agaricales | Occasional | |
| Agrocybe paludosa | Agaricales | Rare | |
| Agrocybe pediades | Common Fieldcap | Agaricales | Occasional |
| Agrocybe praecox | Spring Fieldcap | Agaricales | Common |
| Agrocybe tabacina | Agaricales | Rare | |
| Albotricha acutipila | Ascomycetes | ? | |
| Aleuria aurantia | Orange Peel Fungus | Ascomycetes | Frequent |
| Allophylaria campanuliformis | Ascomycetes | ? | |
| Alternaria radicina | Pathogen | ? | |
| Amanita ceciliae | Snakeskin Grisette | Agaricales | Rare |
| Amanita citrina | False Deathcap | Agaricales | Abundant |
| Amanita citrina var. alba | False Deathcap | Agaricales | Frequent |
| Amanita citrina var. citrina | False Deathcap | Agaricales | Abundant |
| Amanita crocea | Orange Grisette | Agaricales | Occasional |
| Amanita echinocephala | Solitary Amanita | Agaricales | Rare |
| Amanita excelsa | Grey Spotted Amanita | Agaricales | Frequent |
| Amanita excelsa var. excelsa | Grey Spotted Amanita | Agaricales | Occasional |
| Amanita excelsa var. spissa | Grey Spotted Amanita | Agaricales | Frequent |
| Amanita fulva | Tawny Grisette | Agaricales | Frequent |
| Amanita gemmata | Jewelled Amanita | Agaricales | Rare |
| Amanita muscaria | Fly Agaric | Agaricales | Frequent |
| Amanita muscaria var. muscaria | Fly Agaric | Agaricales | Frequent |
| Amanita nivalis | Mountain Grisette | Agaricales | ? |
| Amanita pantherina | Panthercap | Agaricales | Rare |
| Amanita phalloides | Deathcap | Agaricales | Occasional |
| Amanita porphyria | Grey Veiled Amanita | Agaricales | Common |
| Amanita regalis | Agaricales | ? | |
| Amanita rubescens | Blusher | Agaricales | Abundant |
| Amanita rubescens var. annulosulphurea | Blusher | Agaricales | Rare |
| Amanita rubescens var. rubescens | Blusher | Agaricales | Abundant |
| Amanita solitaria | Agaricales | ? | |
| Amanita submembranacea | Agaricales | Rare | |
| Amanita vaginata (as Amanitopsis vaginata) | Grisette | Agaricales | Common |
| Amanita vaginata var. vaginata | Grisette | Agaricales | Common |
| Amanita verna | Agaricales | Rare | |
| Amanita virosa | Destroying Angel | Agaricales | ? |
| Amanita vittadinii | Barefoot Amanita | Agaricales | ? |
| Amphiporthe leiphaemia | Ascomycetes | ? | |
| Ampulloclitocybe clavipes | Club Foot | Agaricales | Frequent |
| Amylostereum laevigatum | Resupinate | Occasional | |
| Annulohypoxylon cohaerens (as Hypoxylon cohaerens) | Ascomycetes | Occasional | |
| Annulohypoxylon multiforme (as Hypoxylon multiforme) | Ascomycetes | Common | |
| Anthina flammea | Ascomycetes | ? | |
| Anthostomella clypeoides | Pucciniales | ? | |
| Anthostomella punctulata | Pucciniales | ? | |
| Anthracobia macrocystis | Disco | ? | |
| Anthracobia maurilabra | Disco | ? | |
| Anthracobia melaloma | Disco | ? | |
| Antrodia albida | Polyporales | Rare | |
| Antrodia xantha | Polyporales | Occasional | |
| Apiognomonia errabunda | Pathogen | ? | |
| Arachnopeziza aranea | Disco | ? | |
| Arachnopeziza aurata | Disco | ? | |
| Arachnopeziza eriobasis | Disco | ? | |
| Armillaria cepistipes | Agaricales | ? | |
| Armillaria gallica | Bulbous Honey Fungus | Agaricales | Occasional |
| Armillaria mellea | Honey Fungus | Agaricales | Frequent |
| Armillaria ostoyae | Dark Honey Fungus | Agaricales | Common |
| Armillaria tabescens | Ringless Honey Fungus | Agaricales | Rare |
| Arrhenia acerosa | Moss Oysterling | Agaricales | ? |
| Arrhenia griseopallida | Agaricales | Occasional | |
| Arrhenia latispora | Agaricales | ? | |
| Arrhenia lobata | Agaricales | ? | |
| Arrhenia onisca | Agaricales | ? | |
| Arrhenia rickenii | Agaricales | Occasional | |
| Arrhenia rustica | Agaricales | ? | |
| Arrhenia spathulata | Agaricales | ? | |
| Ascobolus albidus | Ascomycetes | ? | |
| Ascobolus brassicae | Ascomycetes | ? | |
| Ascobolus carbonarius | Ascomycetes | ? | |
| Ascobolus crenulatus | Ascomycetes | ? | |
| Ascobolus denudatus | Ascomycetes | ? | |
| Ascobolus equinus | Ascomycetes | ? | |
| Ascobolus foliicola | Ascomycetes | ? | |
| Ascobolus immersus | Ascomycetes | ? | |
| Ascobolus rhytidosporus | Ascomycetes | ? | |
| Ascobolus stercorarius | Ascomycetes | ? | |
| Ascobolus stictoideus | Ascomycetes | ? | |
| Ascocoryne cylichnium | Ascomycetes | Frequent | |
| Ascocoryne sarcoides | Purple Jellydisc | Heterobasidomycetes | Common |
| Ascodichaena rugosa | Ascomycetes | ? | |
| Ascotremella faginea | Heterobasidomycetes | Rare | |
| Ascozonus woolhopensis | Ascomycetes | ? | |
| Asterina veronicae | Pucciniales | ? | |
| Asterophora lycoperdoides | Powdery Piggyback | Agaricales | Occasional |
| Asterophora parasitica | Silky Piggyback | Agaricales | Common |
| Athelia arachnoidea | Resupinate | ? | |
| Atopospora betulina | Pucciniales | ? | |
| Aureobasidium pullulans var. pullulans | Pathogen | ? | |
| Aureoboletus gentilis | Gilded Bolete | Agaricales | Rare |
| Auricularia auricula-judae | Jelly Ear | Heterobasidomycetes | Abundant |
| Auricularia mesenterica | Tripe Fungus | Heterobasidomycetes | Frequent |
| Auriscalpium vulgare | Earpick Fungus | Agaricales | Occasional |
| Bactridium flavum | Ascomycetes | Occasional | |
| Baeospora myosura | Conifercone Cap | Agaricales | Occasional |
| Basidiodendron radians | Resupinate | Occasional | |
| Basidioradulum radula | Toothed Crust | Resupinate | Common |
| Battarrea phalloides | Sandy Stiltball | Gasteromycetes | Rare |
| Bauhinus flosculorum | Pucciniales | ? | |
| Bauhinus scabiosae | Pucciniales | ? | |
| Bauhinus succisae | Pucciniales | ? | |
| Belonidium sulphureum | Discomycetes | ? | |
| Belonopsis filispora | Discomycetes | ? | |
| Bertia moriformis | Wood Mulberry | Ascomycetes | ? |
| Bertia moriformis var. moriformis | Wood Mulberry | Ascomycetes | ? |
| Betulina fuscostipitata | Pucciniales | ? | |
| Biscogniauxia nummularia | Beech Tarcrust | Ascomycetes | Abundant |
| Bisporella citrina | Lemon Disco | Ascomycetes | Frequent |
| Bisporella sulfurina | Ascomycetes | Occasional | |
| Bjerkandera adusta | Smoky Bracket | Polyporales | Frequent |
| Bjerkandera fumosa | Big Smoky Bracket | Polyporales | Rare |
| Blumeria graminis | Pucciniales | ? | |
| Boeremia hedericola (as Phoma hedericola) | Ascomycetes | Common | |
| Boidinia furfuracea | Resupinate | ? | |
| Bolbitius reticulatus | Netted Fieldcap | Agaricales | Rare |
| Bolbitius titubans | Yellow Fieldcap | Agaricales | Common |
| Bolbitius titubans var. titubans | Yellow Fieldcap | Agaricales | Common |
| Boletus appendiculatus | Oak Bolete | Boletales | Rare |
| Boletus badius | Bay Bolete | Boletales | Frequent |
| Boletus calopus | Bitter Beech Bolete | Boletales | Rare |
| Boletus edulis | Cep | Boletales | Frequent |
| Boletus impolitus | Iodine Bolete | Boletales | Rare |
| Boletus luridiformis (B. erythropus) | Scarletina Bolete | Boletales | Frequent |
| Boletus luridiformis var. luridiformis | Scarletina Bolete | Boletales | Occasional |
| Boletus luridus | Lurid Bolete | Boletales | Rare |
| Boletus luridus var. luridus | Lurid Bolete | Boletales | Rare |
| Boletus pinophilus | Pine Bolete | Boletales | Rare |
| Boletus porosporus | Sepia Bolete | Boletales | Rare |
| Boletus pulverulentus | Inkstain Bolete | Boletales | Rare |
| Boletus queletii | Deceiving Bolete | Boletales | Rare |
| Boletus radicans | Rooting Bolete | Boletales | Rare |
| Boletus reticulatus (aestivalis) non Pers. (1801) | Summer Bolete | Boletales | Rare |
| Boletus rubellus (as Xerocomus rubellus) | Boletales | Rare | |
| Bombardia bombarda | Ascomycetes | ? | |
| Botryobasidium aureum | Resupinate | ? | |
| Botryobasidium danicum | Resupinate | ? | |
| Botryobasidium laeve | Resupinate | ? | |
| Botryobasidium pruinatum | Resupinate | ? | |
| Botryobasidium subcoronatum | Resupinate | ? | |
| Botryobasidium vagum | Resupinate | ? | |
| Botryohypochnus isabellinus | Resupinate | ? | |
| Botryosporium pulchrum | Pathogen | ? | |
| Botryotinia fuckeliana | Pathogen | ? | |
| Botrytis cinerea | Pathogen | ? | |
| Botrytis galanthina | Pathogen | Rare | |
| Bovista aestivalis | Gasteromycetes | Rare | |
| Bovista dermoxantha | Gasteromycetes | Occasional | |
| Bovista nigrescens | Brown Puffball | Gasteromycetes | Common |
| Bovista plumbea | Grey Puffball | Gasteromycetes | Common |
| Brachysporium obovatum | Ascomycetes | ? | |
| Brevicellicium olivascens | Resupinate | ? | |
| Brunnipila clandestina | Discomycetes | ? | |
| Bryoscyphus conocephali | Discomycetes | ? | |
| Bulbillomyces farinosus | Entomopathogenic | ? | |
| Bulgaria inquinans | Black Bulgar | Ascomycetes | Abundant |
| Byssocorticium atrovirens | Resupinate | ? | |
| Byssocorticium terrestre | Resupinate | ? | |
| Byssomerulius corium | Netted Crust | Resupinate | Occasional |
| Byssonectria fusispora | Ascomycetes | ? | |
| Byssonectria terrestris | Ascomycetes | Rare | |
| Calloria neglecta | Discomycetes | ? | |
| Calloriella umbrinella | Ascomycetes | Rare | |
| Calocera cornea | Small Stagshorn | Dacrymycetales | Abundant |
| Calocera glossoides | Dacrymycetales | Rare | |
| Calocera pallidospathulata | Pale Stagshorn | Dacrymycetales | Frequent |
| Calocera stricta | Dacrymycetales | Rare | |
| Calocera viscosa | Yellow Stagshorn | Dacrymycetales | Abundant |
| Calocybe constricta | Agaricales | ? | |
| Calocybe gambosa | St. George's Mushroom | Agaricales | Occasional |
| Calocybe ionides | Violet Domecap | Agaricales | Rare |
| Calvatia gigantea | Giant Puffball | Gasteromycetes | Rare |
| Calvatia gigantea (Langermannia gigantea) | Gasteromycetes | Rare | |
| Calycellina lachnobrachya (as Hyaloscypha lachnobrachya var. araneocincta) | |||
| Calycellina leucella | Discomycetes | ? | |
| Calycellina populina | Discomycetes | ? | |
| Calycellina punctata (as Calycellina punctiformis) | Discomycetes | ? | |
| Calycellina spiraeae | Discomycetes | ? | |
| Calycina herbarum (as Hymenoscyphus herbarum) | Discomycetes | ||
| Calyptella capula | Agaricales | Rare | |
| Camarophyllopsis atropuncta | Dotted Fanvault | Agaricales | Rare |
| Camarophyllopsis micacea (as Hygrophorus micaceus) | Agaricales | Rare | |
| Camarops polysperma | Ascomycetes | Rare | |
| Cantharellus aurora (as Cantharellus lutescens) | Golden Chanterelle | Agaricales | Rare |
| Cantharellus cibarius | Chanterelle | Agaricales | Common |
| Cantharellus cinereus | Ashen Chanterelle | Agaricales | Rare |
| Cantharellus friesii | Orange Chanterelle | Agaricales | Rare |
| Cantharellus tubaeformis | Trumpet Chanterelle | Agaricales | Frequent |
| Cantharellus tubiformis var. lutescens | Trumpet Chanterelle | Agaricales | Occasional |
| Capronia nigerrima | Ascomycetes | Rare | |
| Catinella olivacea | Ascomycetes | Rare | |
| Caudospora taleola | Discomycetes | ? | |
| Cenangium ferruginosum | Ascomycetes | ? | |
| Cephalotrichum nanum | Ascomycetes | ? | |
| Ceraceomyces crispatus | Resupinate | ? | |
| Cercospora mercurialis | Pucciniales | ? | |
| Ceriophora palustris | Ascomycetes | ? | |
| Ceriporia reticulata | Resupinate | ? | |
| Ceriporia viridans | Resupinate | ? | |
| Ceriporiopsis mucida | Resupinate | ? | |
| Cerrena unicolor | Polyporales | ? | |
| Chaetosphaerella phaeostroma | Ascomycetes | ? | |
| Chaetosphaeria callimorpha | Ascomycetes | ? | |
| Chaetosphaeria myriocarpa | Ascomycetes | ? | |
| Chaetosphaeria pulviscula | Ascomycetes | Rare | |
| Chalara bulbosa | Ascomycetes | ? | |
| Chalciporus piperatus | Peppery Bolete | Boletales | Frequent |
| Cheilymenia fimicola | Ascomycetes | Rare | |
| Cheilymenia granulata (as Coprobia granulata) | Ascomycetes | Occasional | |
| Cheilymenia granuloata | Ascomycetes | ? | |
| Cheilymenia raripila | Ascomycetes | ? | |
| Cheilymenia rubra | Ascomycetes | ? | |
| Cheilymenia stercorea | Ascomycetes | ? | |
| Cheilymenia theleboloides | Ascomycetes | ? | |
| Cheilymenia vitellina | Ascomycetes | ? | |
| Chlorociboria aeruginascens | Green Elfcup | Ascomycetes | Frequent |
| Chlorociboria aeruginosa | Ascomycetes | ? | |
| Chlorophyllum brunneum | Agaricales | Rare | |
| Chlorophyllum rhacodes | Shaggy Parasol | Agaricales | Frequent |
| Choiromyces meandriformis | Gasteromycetes | Rare | |
| Chondrostereum purpureum | Silverleaf Fungus | Resupinate | Occasional |
| Chroogomphus rutilus | Copper Spike | Agaricales | Rare |
| Ciboria batschiana | Discomycetes | Frequent | |
| Ciboria caucus | Alder Goblet | Discomycetes | Occasional |
| Ciboria viridifusca | Discomycetes | Rare | |
| Ciliaria schizospora | Ascomycetes | ? | |
| Ciliolarina laricina | Discomycetes | ? | |
| Cistella acuum (as Dasyscyphus acuum) | Discomycetes | ? | |
| Cistella dentata | Discomycetes | ? | |
| Cistella fugiens | Discomycetes | ? | |
| Cladobotryum mycophilum | Pathogen | ? | |
| Claussenomyces atrovirens | Ascomycetes | ? | |
| Claussenomyces prasinulus | Ascomycetes | ? | |
| Clavaria acuta | Pointed Club | Aphyllophorales | Occasional |
| Clavaria argillacea | Moor Club | Aphyllophorales | Occasional |
| Clavaria fragilis | White Spindles | Aphyllophorales | Common |
| Clavaria fumosa | Smoky Spindles | Aphyllophorales | Occasional |
| Clavaria greletii | Dark Club | Aphyllophorales | Rare |
| Clavaria rosea | Rose Spindles | Aphyllophorales | Rare |
| Clavaria straminea | Straw Club | Aphyllophorales | Rare |
| Clavaria tenuipes | Aphyllophorales | Rare | |
| Clavaria zollingeri | Violet Coral | Aphyllophorales | Rare |
| Clavariadelphus ligula | Aphyllophorales | ? | |
| Clavariadelphus pistillaris | Giant Club | Aphyllophorales | Rare |
| Claviceps purpurea | Ergot | Ascomycetes | Occasional |
| Claviceps purpurea var. purpurea | Ergot | Ascomycetes | ? |
| Clavicorona taxophila | Yew Club | Aphyllophorales | ? |
| Clavidisculum caricis | Ascomycetes | ? | |
| Clavulina amethystina | Aphyllophorales | ? | |
| Clavulina cinerea | Grey Coral | Aphyllophorales | Frequent |
| Clavulina cinerea forma cinerea | Grey Coral | Aphyllophorales | Frequent |
| Clavulina coralloides (C. Cristata) | Crested Coral | Aphyllophorales | Frequent |
| Clavulina rugosa | Wrinkled Club | Aphyllophorales | Frequent |
| Clavulinopsis corniculata | Meadow Coral | Aphyllophorales | Common |
| Clavulinopsis fusiformis | Golden Spindles | Aphyllophorales | Occasional |
| Clavulinopsis helvola | Yellow Club | Aphyllophorales | Frequent |
| Clavulinopsis laeticolor | Handsome Club | Aphyllophorales | Frequent |
| Clavulinopsis luteoalba | Apricot Club | Aphyllophorales | Occasional |
| Clavulinopsis subtilis | Aphyllophorales | Rare | |
| Clavulinopsis umbrinella | Beige Coral | Aphyllophorales | Rare |
| Climacocystis borealis | Agaricales | ? | |
| Clitocybe brumalis | Agaricales | ? | |
| Clitocybe candicans | Agaricales | Rare | |
| Clitocybe catinus | Agaricales | ? | |
| Clitocybe cerussata | Agaricales | Occasional | |
| Clitocybe costata | Agaricales | Rare | |
| Clitocybe dealbata | Ivory Funnel | Agaricales | Occasional |
| Clitocybe diatreta | Agaricales | ? | |
| Clitocybe dicolor | Agaricales | Occasional | |
| Clitocybe ditopa | Mealy Frosted Funnel | Agaricales | Occasional |
| Clitocybe fragrans (as Clitocybe suaveolens) | Fragrant Funnel | Agaricales | Frequent |
| Clitocybe geotropa | Trooping Funnel | Agaricales | Occasional |
| Clitocybe gibba | Common Funnel | Agaricales | Common |
| Clitocybe houghtonii | Agaricales | Occasional | |
| Clitocybe hydrogramma | Agaricales | Common | |
| Clitocybe infundibuliformis | Common Funnel | Agaricales | Frequent |
| Clitocybe metachroa | Agaricales | Occasional | |
| Clitocybe nebularis | Clouded Funnel | Agaricales | Abundant |
| Clitocybe odora | Aniseed Funnel | Agaricales | Frequent |
| Clitocybe pausiaca | Agaricales | Occasional | |
| Clitocybe phaeophthalma | Chicken Run Funnel | Agaricales | Occasional |
| Clitocybe phyllophila | Frosty Funnel | Agaricales | Occasional |
| Clitocybe rivulosa | Fool's Funnel | Agaricales | Occasional |
| Clitocybe tornata | Agaricales | ? | |
| Clitocybe vibecina | Mealy Funnel | Agaricales | Common |
| Clitopilus prunulus | The Miller | Agaricales | Occasional |
| Coccomyces coronatus | Ascomycetes | ? | |
| Coccomyces dentatus | Ascomycetes | ? | |
| Colacogloea peniophorae | Pucciniales | ? | |
| Coleosporium tussilaginis (as Coleosporium campanulae) | Pucciniales | ? | |
| Coleroa robertiani | Ascomycetes | ? | |
| Colletotrichum circinans | Pathogen | ? | |
| Colletotrichum liliacearum | Pathogen | ? | |
| Colletotrichum lindemuthianum | Pathogen | ? | |
| Colletotrichum musae | Pathogen | ? | |
| Collybia acervata | Agaricales | ? | |
| Collybia butyracea var. asema nom. inval. | Butter Cap | Agaricales | Common |
| Collybia butyracea var. butyracea | Butter Cap | Agaricales | Frequent |
| Collybia cirrhata | Piggyback Shanklet | Agaricales | Occasional |
| Collybia cookei | Splitpea Shanklet | Agaricales | Rare |
| Collybia distorta | Agaricales | Rare | |
| Collybia erythropus | Redleg Toughshank | Agaricales | Frequent |
| Collybia fuscopurpurea | Agaricales | ? | |
| Collybia fusipes | Agaricales | Frequent | |
| Collybia hariolorum | Agaricales | ? | |
| Collybia inodora | Agaricales | ? | |
| Collybia ocior | Agaricales | Rare | |
| Collybia prolixa | Agaricales | ? | |
| Collybia tuberosa | Lentil Shanklet | Agaricales | Rare |
| Collybia xylophila | Agaricales | ? | |
| Colpoma quercinum | Ascomycetes | ? | |
| Coltricia perennis | Tiger's Eye | Polyporales | Rare |
| Coniochaeta pulveracea | Ascomycetes | ? | |
| Coniochaeta scatigena | Ascomycetes | Rare | |
| Coniophora arida | Resupinate | Occasional | |
| Coniophora olivacea | Resupinate | ? | |
| Coniophora puteana | Wet Rot | Resupinate | Common |
| Conocybe apala | Milky Conecap | Agaricales | Rare |
| Conocybe aporos | Agaricales | Occasional | |
| Conocybe arrhenii | Ringed Conecap | Agaricales | Occasional |
| Conocybe brunneola nom. nud. | Agaricales | ? | |
| Conocybe filaris | Fool's Conecap | Agaricales | ? |
| Conocybe pilosella | Agaricales | ? | |
| Conocybe pubescens | Agaricales | Rare | |
| Conocybe pulchella | Agaricales | ? | |
| Conocybe rugosa | Agaricales | ? | |
| Conocybe striaepes | Agaricales | ? | |
| Conocybe subovalis | Agaricales | Occasional | |
| Conocybe tenera | Agaricales | Occasional | |
| Conocybe tenera agg. | Agaricales | Occasional | |
| Conocybe utriformis | Agaricales | ? | |
| Contumyces rosellus | Agaricales | ? | |
| Coprinellus angulatus | Agaricales | ? | |
| Coprinellus bisporus | Agaricales | ? | |
| Coprinellus disseminatus | Fairy Inkcap | Agaricales | Frequent |
| Coprinellus domesticus | Firerug Inkcap | Agaricales | Rare |
| Coprinellus ephemerus | Agaricales | ? | |
| Coprinellus hiascens | Agaricales | Rare | |
| Coprinellus impatiens | Agaricales | Occasional | |
| Coprinellus micaceus | Glistening Inkcap | Agaricales | Frequent |
| Coprinellus pellucidus | Agaricales | ? | |
| Coprinellus radians | Agaricales | ? | |
| Coprinellus truncorum | Agaricales | ? | |
| Coprinopsis atramentaria | Common Inkcap | Agaricales | Frequent |
| Coprinopsis cinerea | Agaricales | Rare | |
| Coprinopsis lagopus | Hare's-foot Inkcap | Agaricales | Common |
| Coprinopsis macrocephala | Agaricales | ? | |
| Coprinopsis martinii (as Coprinus martinii) | Agaricales | Rare | |
| Coprinopsis nivea | Snowy Inkcap | Agaricales | Occasional |
| Coprinopsis picacea | Magpie Inkcap | Agaricales | Occasional |
| Coprinopsis picacea (as Coprinus picaceus) | Agaricales | Rare | |
| Coprinopsis radiata | Agaricales | Rare | |
| Coprinopsis spelaiophila | Agaricales | ? | |
| Coprinopsis stercorea | Agaricales | Rare | |
| Coprinopsis urticicola | Agaricales | ? | |
| Coprinus comatus | Shaggy Inkcap | Agaricales | Frequent |
| Coprinus ephemeroides | Agaricales | ? | |
| Coprinus patouillardii | Agaricales | ? | |
| Coprinus plicatilis | Agaricales | Frequent | |
| Coprinus silvaticus | Agaricales | Rare | |
| Coprinus stellatus | Agaricales | ? | |
| Coprotus granuliformis | Ascomycetes | ? | |
| Coprotus ochraceus | Ascomycetes | Rare | |
| Cordyceps militaris | Scarlet Caterpillarclub | Ascomycetes | Occasional |
| Cordyceps ophioglossoides | Snaketongue Truffleclub | Ascomycetes | ? |
| Coriolopsis gallica | Polyporales | ? | |
| Corticium roseum | Resupinate | ? | |
| Cortinarius acutus | Agaricales | ? | |
| Cortinarius alboviolaceus | Pearly Webcap | Agaricales | Common |
| Cortinarius amoenolens | Agaricales | Rare | |
| Cortinarius anomalus | Variable Webcap | Agaricales | Occasional |
| Cortinarius anthracinus | Agaricales | Occasional | |
| Cortinarius argentatus | Agaricales | ? | |
| Cortinarius argutus | Agaricales | Rare | |
| Cortinarius armeniacus | Agaricales | ? | |
| Cortinarius armillatus | Red Banded Webcap | Agaricales | Occasional |
| Cortinarius bolaris | Agaricales | Rare | |
| Cortinarius brunneus | Agaricales | Occasional | |
| Cortinarius brunneus var. glandicolor | Agaricales | ? | |
| Cortinarius bulbosus | Agaricales | ? | |
| Cortinarius caerulescens | Mealy Bigfoot Webcap | Agaricales | ? |
| Cortinarius cagei non Cortinarius bicolor Gray, 1821 | Agaricales | ? | |
| Cortinarius callisteus | Agaricales | ? | |
| Cortinarius caninus | Agaricales | ? | |
| Cortinarius castaneus | Agaricales | ? | |
| Cortinarius causticus | Agaricales | Rare | |
| Cortinarius cinnabarinus | Agaricales | Common | |
| Cortinarius cinnamomeus | Cinnamon Webcap | Agaricales | Rare |
| Cortinarius collinitus | Agaricales | Rare | |
| Cortinarius croceocaeruleus | Agaricales | ? | |
| Cortinarius crystallinus | Agaricales | ? | |
| Cortinarius cyanites | Agaricales | ? | |
| Cortinarius decipiens | Sepia Webcap | Agaricales | Common |
| Cortinarius decipiens var. decipiens | Sepia Webcap | Agaricales | Common |
| Cortinarius decumbens | Agaricales | ? | |
| Cortinarius delibutus | Yellow Webcap | Agaricales | Common |
| Cortinarius dilutus | Agaricales | ? | |
| Cortinarius elatior | Agaricales | Occasional | |
| Cortinarius emollitus | Agaricales | ? | |
| Cortinarius erubescens | Agaricales | ? | |
| Cortinarius erythrinus | Agaricales | ? | |
| Cortinarius flexipes | Agaricales | Common | |
| Cortinarius flexipes var. flabellus | Agaricales | ? | |
| Cortinarius germanus | Agaricales | ? | |
| Cortinarius glaucopus | Agaricales | Occasional | |
| Cortinarius helvolus | Agaricales | ? | |
| Cortinarius hemitrichus | Frosty Webcap | Agaricales | Frequent |
| Cortinarius hinnuleus | Earthy Webcap | Agaricales | Common |
| Cortinarius humicola | Agaricales | Rare | |
| Cortinarius impennis | Agaricales | ? | |
| Cortinarius incisus | Agaricales | ? | |
| Cortinarius infractus | Bitter Webcap | Agaricales | Rare |
| Cortinarius junghuhnii | Agaricales | ? | |
| Cortinarius largus | Agaricales | Rare | |
| Cortinarius leucopus | Agaricales | Rare | |
| Cortinarius livido-ochraceus | Wrinkled Webcap | Agaricales | ? |
| Cortinarius macropus | Agaricales | ? | |
| Cortinarius malachius (C. Croceifolius) | Agaricales | Rare | |
| Cortinarius malicorius | Agaricales | Rare | |
| Cortinarius mucifluoides (C. Pseudosalor) | Agaricales | Common | |
| Cortinarius mucosus | Orange Webcap | Agaricales | Rare |
| Cortinarius multiformis | Agaricales | ? | |
| Cortinarius myrtillinus | Agaricales | ? | |
| Cortinarius obtusus | Agaricales | Rare | |
| Cortinarius ochroleucus | Agaricales | Common | |
| Cortinarius paleaceus | Pelargonium Webcap | Agaricales | Occasional |
| Cortinarius pateriformis | Agaricales | ? | |
| Cortinarius phoeniceus | Agaricales | ? | |
| Cortinarius pholideus | Scaly Webcap | Agaricales | Rare |
| Cortinarius pluvius | Agaricales | Rare | |
| Cortinarius psammocephalus | Agaricales | ? | |
| Cortinarius purpurascens | Bruising Webcap | Agaricales | Occasional |
| Cortinarius purpureus | Agaricales | Rare | |
| Cortinarius quadricolor | Agaricales | ? | |
| Cortinarius raphanoides | Agaricales | Occasional | |
| Cortinarius rigens | Agaricales | ? | |
| Cortinarius rigidus | Agaricales | ? | |
| Cortinarius rubicundulus | Agaricales | ? | |
| Cortinarius salor | Agaricales | Common | |
| Cortinarius sanguineus | Bloodred Webcap | Agaricales | Frequent |
| Cortinarius saturninus | Agaricales | ? | |
| Cortinarius scaurus | Green Webcap | Agaricales | ? |
| Cortinarius semisanguineus | Surprise Webcap | Agaricales | Common |
| Cortinarius stemmatus | Agaricales | ? | |
| Cortinarius stillatitius | Purple Stocking Webcap | Agaricales | Occasional |
| Cortinarius subferrugineus | Agaricales | Rare | |
| Cortinarius subpurpurascens | Agaricales | Rare | |
| Cortinarius tabularis | Agaricales | ? | |
| Cortinarius torvus | Stocking Webcap | Agaricales | Occasional |
| Cortinarius triumphans | Birch Webcap | Agaricales | Occasional |
| Cortinarius trivialis | Girdled Webcap | Agaricales | Occasional |
| Cortinarius uliginosus | Agaricales | Rare | |
| Cortinarius valgus | Agaricales | ? | |
| Cortinarius variicolor | Agaricales | ? | |
| Cortinarius varius | Contrary Webcap | Agaricales | Rare |
| Cortinarius vibratilis | Agaricales | ? | |
| Cortinarius violaceus | Violet Webcap | Agaricales | Rare |
| Coryne atrovirens | Ascomycetes | ? | |
| Cotylidia pannosa | Woolly Rosette | Agaricales | Rare |
| Cotylidia undulata | Stalked Rosette | Agaricales | ? |
| Craterellus cornucopioides | Horn of Plenty | Agaricales | Common |
| Crepidotus applanatus | Agaricales | Common | |
| Crepidotus applanatus var. applanatus | Flat Oysterling | Agaricales | Common |
| Crepidotus calolepis | Agaricales | ? | |
| Crepidotus caspari | Agaricales | Occasional | |
| Crepidotus epibryus | Agaricales | ? | |
| Crepidotus inhonestus | Agaricales | ? | |
| Crepidotus mollis | Peeling Oysterling | Agaricales | Common |
| Crepidotus variabilis | Variable Oysterling | Agaricales | Frequent |
| Crepidotus versutus | Agaricales | ? | |
| Crinipellis scabella (as Crinipellis stipitaria) | Hairy Parachute | Agaricales | Rare |
| Cristinia helvetica | Ascomycetes | ? | |
| Crocicreas amenti | Ascomycetes | ? | |
| Crocicreas coronatum | Ascomycetes | ? | |
| Crocicreas coronatum (Cyathicula cornata) | Ascomycetes | ? | |
| Crocicreas culmicola | Ascomycetes | ? | |
| Crocicreas cyathoideum | Ascomycetes | ? | |
| Crocicreas cyathoideum var. cyathoideum | Ascomycetes | ? | |
| Crocicreas cyathoideum var. pteridicola | Ascomycetes | ? | |
| Crocicreas dolosellum | Ascomycetes | ? | |
| Crocicreas starbaeckii | Ascomycetes | ? | |
| Crocicreas subhyalinum | Ascomycetes | ? | |
| Crucibulum laeve | Common Bird's Nest | Gasteromycetes | Rare |
| Cryptosphaeria eunomia | Ascomycetes | ? | |
| Cudoniella acicularis | Oak Pin | Ascomycetes | Rare |
| Cudoniella clavus | Ascomycetes | Rare | |
| Cudoniella clavus var. clavus | Spring Pin | Ascomycetes | ? |
| Cumminsiella mirabilissima | Pucciniales | ? | |
| Cyathus olla | Field Bird's Nest | Gasteromycetes | Rare |
| Cyathus striatus | Fluted Bird's Nest | Gasteromycetes | Occasional |
| Cylindrobasidium laeve | Resupinate | ? | |
| Cymadothea trifolii | Pucciniales | ? | |
| Cyphellostereum laeve | Agaricales | ? | |
| Cystoderma amianthinum | Earthy Powdercap | Agaricales | Frequent |
| Cystoderma carcharias | Pearly Powdercap | Agaricales | Rare |
| Cystoderma granulosum | Agaricales | Rare | |
| Cystolepiota bucknallii | Lilac Dapperling | Agaricales | Rare |
| Cystolepiota hetieri | Agaricales | Rare | |
| Cystolepiota moelleri | Agaricales | Rare | |
| Cystolepiota seminuda | Agaricales | Occasional | |
| Cystolepiota sistrata | Bearded Dapperling | Agaricales | Occasional |
| Dacrymyces chrysocomus | Dacrymycetales | ? | |
| Dacrymyces deliquescens | Dacrymycetales | ? | |
| Dacrymyces ovisporus | Dacrymycetales | ? | |
| Dacrymyces stillatus | Common Jellyspot | Dacrymycetales | Frequent |
| Dacrymyces tortus | Dacrymycetales | ? | |
| Daedalea quercina | Oak Mazegill | Polyporales | Occasional |
| Daedaleopsis confragosa | Blushing Bracket | Polyporales | Frequent |
| Daedaleopsis tricolor | Polyporales | ? | |
| Daldinia concentrica | King Alfred's Cakes | Ascomycetes | Common |
| Dasyscyphella nivea | Ascomycetes | Rare | |
| Dasyscyphus occultus | Discomycetes | ? | |
| Dasyscyphus pteridis | Discomycetes | ? | |
| Datronia mollis | Common Mazegill | Polyporales | Occasional |
| Delicatula integrella | Agaricales | Rare | |
| Delitschia cf lamprorhynchia | Ascomycetes | Rare | |
| Delitschia marchalii | Ascomycetes | Rare | |
| Dendryphion comosum | Ascomycetes | ? | |
| Dennisiella babingtonii | Ascomycetes | Rare | |
| Dermoloma cuneifolium | Crazed Cap | Agaricales | Occasional |
| Dermoloma pseudocuneifolium | Agaricales | ? | |
| Dialonectria episphaeria | Ascomycetes | Rare | |
| Diaporthe eres | Ascomycetes | ? | |
| Diaporthe samaricola | Ascomycetes | ? | |
| Diaporthopsis pantherina | Ascomycetes | Rare | |
| Diatrype disciformis | Beech Barkspot | Ascomycetes | Occasional |
| Diatrype stigma | Common Tarcrust | Ascomycetes | Common |
| Diatrypella favacea | Ascomycetes | Occasional | |
| Diatrypella quercina | Ascomycetes | Rare | |
| Didymosphaeria oblitescens | Ascomycetes | ? | |
| Diplocarpon rosae | Pucciniales | ? | |
| Diplomitoporus lindbladii (as Tyromyces cinerescens) | Resupinate | ? | |
| Diplosporonema delastrei | Pucciniales | ? | |
| Disciotis venosa | Bleach Cup | Ascomycetes | Occasional |
| Discocistella grevillei | Discomycetes | ? | |
| Discosia artocreas | Ascomycetes | Rare | |
| Ditiola peziziformis | Dacrymycetales | Rare | |
| Dothidea ranunculi (as Leptotrochila ranunculi) | Ascomycetes | Occasional | |
| Dumontinia tuberosa | Anemone Cup | Ascomycetes | Rare |
| Durella atrocyanea | Discomycetes | ? | |
| Durella connivens | Ascomycetes | Rare | |
| Durella suecica | Ascomycetes | Rare | |
| Echinula asteriadiformis | Discomycetes | ? | |
| Elaphocordyceps capitata | Drumstick Truffleclub | Ascomycetes | ? |
| Elaphomyces granulatus | False Truffle | Ascomycetes | ? |
| Elaphomyces muricatus | Ascomycetes | ? | |
| Enchnoa infernalis | Ascomycetes | ? | |
| Encoelia furfuracea | Spring Hazelcup | Ascomycetes | Rare |
| Endophyllum euphorbiae-silvaticae | Pucciniales | ? | |
| Endoxyla rostrata | Pucciniales | ? | |
| Entoloma aethiops | Pucciniales | ? | |
| Entoloma anatinum | Pucciniales | ? | |
| Entoloma aprile | Pucciniales | Occasional | |
| Entoloma asprellum | Pucciniales | Rare | |
| Entoloma atrocoeruleum | Agaricales | Rare | |
| Entoloma carneogriseum | Agaricales | Rare | |
| Entoloma cephalotrichum | Agaricales | ? | |
| Entoloma cetratum | Honey Pinkgill | Agaricales | ? |
| Entoloma chalybeum | Agaricales | Occasional | |
| Entoloma chalybeum var. chalybeum | Indigo Pinkgill | Agaricales | Occasional |
| Entoloma chalybeum var. lazulinum | Agaricales | Occasional | |
| Entoloma clypeatum | Shield Pinkgill | Agaricales | Occasional |
| Entoloma coelestinum | Agaricales | ? | |
| Entoloma conferendum | Agaricales | Common | |
| Entoloma conferendum var. conferendum | Star Pinkgill | Agaricales | Common |
| Entoloma conferendum var. pusillum | Agaricales | ? | |
| Entoloma corvinum | Agaricales | Rare | |
| Entoloma costatum | Agaricales | ? | |
| Entoloma cyaneoviridescens | Agaricales | ? | |
| Entoloma elodes | Agaricales | ? | |
| Entoloma euchroum | Agaricales | Rare | |
| Entoloma favrei | Agaricales | Rare | |
| Entoloma fernandae | Agaricales | ? | |
| Entoloma formosum | Agaricales | ? | |
| Entoloma griseocyaneum | Felted Pinkgill | Agaricales | Rare |
| Entoloma hirtipes | Agaricales | Rare | |
| Entoloma incanum | Mousepee Pinkgill | Agaricales | Rare |
| Entoloma infula | Agaricales | Rare | |
| Entoloma jubatum | Sepia Pinkgill | Agaricales | ? |
| Entoloma juncinum | Agaricales | ? | |
| Entoloma lampropus | Agaricales | Occasional | |
| Entoloma lividocyanulum | Agaricales | ? | |
| Entoloma majaloides | Agaricales | Rare | |
| Entoloma neglectum | Agaricales | ? | |
| Entoloma nitidum | Agaricales | Rare | |
| Entoloma papillatum | Papillate Pinkgill | Agaricales | ? |
| Entoloma pleopodium | Aromatic Pinkgill | Agaricales | ? |
| Entoloma poliopus | Agaricales | Rare | |
| Entoloma porphyrophaeum | Lilac Pinkgill | Agaricales | Common |
| Entoloma prunuloides | Mealy Pinkgill | Agaricales | ? |
| Entoloma rhodopolium | Wood Pinkgill | Agaricales | Common |
| Entoloma rufocarneum | Agaricales | ? | |
| Entoloma scabrosum | Agaricales | Rare | |
| Entoloma sericellum | Cream Pinkgill | Agaricales | Occasional |
| Entoloma sericeum | Agaricales | Occasional | |
| Entoloma sericeum var. sericeum | Silky Pinkgill | Agaricales | Occasional |
| Entoloma serrulatum | Blue Edge Pinkgill | Agaricales | Common |
| Entoloma sinuatum | Livid Pinkgill | Agaricales | Rare |
| Entoloma solstitiale | Agaricales | ? | |
| Entoloma sphagnorum | Agaricales | ? | |
| Entoloma tjallingiorum | Agaricales | ? | |
| Entoloma vernum | Agaricales | ? | |
| Entoloma versatile | Agaricales | ? | |
| Entoloma vinaceum | Agaricales | ? | |
| Entomophthora muscae | Pathogen | Common | |
| Entyloma bellidis | Pucciniales | ? | |
| Entyloma ficariae | Pucciniales | ? | |
| Entyloma ficariae | Pucciniales | ? | |
| Epichloë typhina | Choke | Pucciniales | Occasional |
| Eriopezia caesia | Pucciniales | ? | |
| Erysiphe adunca var. adunca | Pucciniales | ? | |
| Erysiphe adunca var. regularis | Pucciniales | ? | |
| Erysiphe alphitoides | Oak Mildew | Pucciniales | Abundant |
| Erysiphe aquilegiae var. aquilegiae | Pucciniales | ? | |
| Erysiphe betae | Pucciniales | ? | |
| Erysiphe biocellata | Pucciniales | ? | |
| Erysiphe circaeae | Pucciniales | ? | |
| Erysiphe cruciferarum | Discomycetes | ? | |
| Erysiphe depressa | Discomycetes | ? | |
| Erysiphe heraclei | Discomycetes | ? | |
| Erysiphe hyperici | Discomycetes | ? | |
| Erysiphe penicillata | Discomycetes | ? | |
| Erysiphe polygoni | Discomycetes | ? | |
| Erysiphe sordida | Discomycetes | ? | |
| Erysiphe sparsa | Discomycetes | ? | |
| Erysiphe tortilis | Discomycetes | ? | |
| Erysiphe trifolii | Discomycetes | ? | |
| Erysiphe trifolii var. trifolii | Discomycetes | ? | |
| Erysiphe ulmariae | Discomycetes | ? | |
| Erysiphe urticae | Discomycetes | ? | |
| Eudarluca caricis | Discomycetes | ? | |
| Euepixylon udum (as Hypoxylon udum) | Ascomycetes | Rare | |
| Eurotium herbariorum | Discomycetes | ? | |
| Eutypa flavovirens | Ascomycetes | ? | |
| Eutypa lata | Ascomycetes | ? | |
| Eutypa maura | Ascomycetes | ? | |
| Eutypa spinosa | Ascomycetes | ? | |
| Eutypella quaternata | Ascomycetes | Rare | |
| Eutypella scoparia | Pathogen | ? | |
| Exidia albida | Heterobasidomycetes | ? | |
| Exidia glandulosa | Witches' Butter | Heterobasidomycetes | Abundant |
| Exidia nucleata | Crystal Brain | Heterobasidomycetes | Occasional |
| Exidia recisa | Heterobasidomycetes | Occasional | |
| Exidia thuretiana | White Brain | Heterobasidomycetes | Common |
| Exidiopsis calcea | Heterobasidomycetes | ? | |
| Exobasidium myrtilli | Pathogen | ? | |
| Exobasidium vaccinii | Cowberry Redleaf | Pathogen | Occasional |
| Faerberia carbonaria | Firesite Funnel | Agaricales | Rare |
| Farysia thuemenii | Pucciniales | ? | |
| Fimaria hepatica | Pucciniales | ? | |
| Fimaria theioleuca | Pucciniales | ? | |
| Fistulina hepatica | Beefsteak Fungus | Pucciniales | Common |
| Flagelloscypha minutissima | Agaricales | Rare | |
| Flammulaster carpophilus | Pucciniales | Rare | |
| Flammulaster carpophilus var. carpophilus | Pucciniales | ? | |
| Flammulaster ferrugineus | Pucciniales | ? | |
| Flammulaster granulosus | Pucciniales | ? | |
| Flammulaster limulatus var. limulatus | Pucciniales | ? | |
| Flammulaster siparius | Pucciniales | ? | |
| Flammulina velutipes | Velvet Shank | Agaricales | Occasional |
| Flammulina velutipes var. velutipes | Velvet Shank | Agaricales | Occasional |
| Fomes fomentarius | Tinder Bracket | Polyporales | Rare |
| Fomitiporia punctata (Phellinus punctatus) | Polyporales | ? | |
| Fusarium coeruleum | Ascomycetes | ? | |
| Fusarium culmorum | Ascomycetes | ? | |
| Fusarium oxysporum forma spec. conglutinans | Ascomycetes | ? | |
| Fusarium sporotrichioides | Ascomycetes | ? | |
| Fuscolachnum dumorum (as Dasyscyphus dumorum) | Ascomycetes | Rare | |
| Fuscoporia ferrea (as Phellinus ferreus) | Cinnamon Porecrust | Resupinate | Common |
| Fuscoporia ferruginosa (as Fomes ferruginosus) | Rusty Porecrust | Resupinate | Common |
| Gaeumannomyces graminis var. tritici | Ascomycetes | ? | |
| Galerina badipes | Agaricales | ? | |
| Galerina clavata | Agaricales | ? | |
| Galerina hypnorum | Moss Bell | Agaricales | Rare |
| Galerina laevis | Agaricales | Occasional | |
| Galerina marginata | Funeral Bell | Agaricales | Rare |
| Galerina mniophila | Agaricales | Occasional | |
| Galerina paludosa | Bog Bell | Agaricales | Rare |
| Galerina praticola | Agaricales | ? | |
| Galerina pumila | Dwarf Bell | Agaricales | Rare |
| Galerina sideroides | Agaricales | ? | |
| Galerina sphagnorum | Agaricales | ? | |
| Galerina subclavata | Agaricales | ? | |
| Galerina vittiformis | Hairy Leg Bell | Agaricales | Occasional |
| Ganoderma applanatum | Artist's Bracket | Polyporales | Rare |
| Ganoderma australe (as Ganoderma adspersum) | Southern Bracket | Polyporales | Occasional |
| Ganoderma lucidum | Lacquered Bracket | Polyporales | Rare |
| Ganoderma pfeifferi | Polyporales | Rare | |
| Ganoderma resinaceum | Polyporales | Rare | |
| Geastrum coronatum | Gasteromycetes | Rare | |
| Geastrum fimbriatum | Sessile Earthstar | Gasteromycetes | Rare |
| Geastrum pectinatum | Gasteromycetes | Rare | |
| Geastrum rufescens | Gasteromycetes | Rare | |
| Geastrum schmidelii | Gasteromycetes | Rare | |
| Geastrum triplex | Collared Earthstar | Gasteromycetes | Rare |
| Geoglossum atropurpureum | Dark-purple Earthtongue | Ascomycetes | Rare |
| Geoglossum cookeanum | Ascomycetes | Occasional | |
| Geoglossum fallax | Ascomycetes | Occasional | |
| Geoglossum glabrum | Ascomycetes | ? | |
| Geoglossum glutinosum | Ascomycetes | Occasional | |
| Geoglossum umbratile | Plain Earthtongue | Ascomycetes | Rare |
| Geopora arenicola | Ascomycetes | ? | |
| Geopora arenosa | Ascomycetes | ? | |
| Geopyxis carbonaria | Stalked Bonfire Cup | Ascomycetes | Rare |
| Gibberella pulicaris | Ascomycetes | ? | |
| Gibberella zeae | Ascomycetes | ? | |
| Gibellula aranearum | Entomopathogenic | Rare | |
| Gibellula pulchra | Entomopathogenic | Rare | |
| Gliophorus psittacinus (as Hygrocybe psittacina) | Parrot Waxcap | Agaricales | Frequent |
| Gliophorus reginae (as Hygrocybe ) | Agaricales | Rare | |
| Gloeocystidiellum porosum (as Corticium porosum) | Resupinate | ? | |
| Gloeophyllum sepiarium | Conifer Mazegill | Polyporales | Rare |
| Gnomonia alni-viridis | Ascomycetes | Rare | |
| Gnomonia gnomon | Ascomycetes | Rare | |
| Golovinomyces cichoracearum var. cichoracearum | Pucciniales | ? | |
| Golovinomyces cichoracearum var. fischeri | Pucciniales | ? | |
| Golovinomyces cynoglossi | Pucciniales | ? | |
| Gomphidius glutinosus | Slimy Spike | Agaricales | Rare |
| Gomphidius maculatus | Agaricales | Rare | |
| Gomphidius roseus | Rosy Spike | Agaricales | ? |
| Gomphidius viscidus | Agaricales | ? | |
| Graddonidiscus coruscatus | Ascomycetes | ? | |
| Grifola frondosa | Hen of the Woods | Polyporales | Rare |
| Guepinia helvelloides | Salmon Salad | Ascomycetes | Rare |
| Guignardia aesculi | Pathogen | ? | |
| Guignardia punctoidea | Pathogen | ? | |
| Gymnopilus hybridus | Agaricales | Common | |
| Gymnopilus junonius | Spectacular Rustgill | Agaricales | Rare |
| Gymnopilus penetrans | Common Rustgill | Agaricales | Frequent |
| Gymnopilus picreus | Agaricales | ? | |
| Gymnopilus sapineus | Scaly Rustgill | Agaricales | Rare |
| Gymnopus androsaceus (as Marasmius androsaceus) | Horsehair Parachute | Agaricales | Common |
| Gymnopus confluens (as Collybia confluens) | Clustered Toughshank | Agaricales | Frequent |
| Gymnopus dryophilus (as Collybia dryophila) | Russet Toughshank | Agaricales | Abundant |
| Gymnopus fusipes (as Collybia fusipes) | Spindle Toughshank | Agaricales | Frequent |
| Gymnopus peronatus (as Collybia peronata) | Wood Woollyfoot | Agaricales | Frequent |
| Gymnopus quercophilus | Agaricales | ? | |
| Gymnosporangium clavariiforme | Pucciniales | ? | |
| Gymnosporangium sabinae | Pucciniales | Occasional | |
| Haglundia perelegans | Pucciniales | ? | |
| Hamatocanthoscypha laricionis | Discomycetes | ? | |
| Handkea excipuliformis | Pestle Puffball | Gasteromycetes | Common |
| Handkea utriformis | Mosaic Puffball | Gasteromycetes | Frequent |
| Hapalopilus nidulans | Cinnamon Bracket | Polyporales | Occasional |
| Hebeloma anthracophilum | Agaricales | ? | |
| Hebeloma birrus | Agaricales | ? | |
| Hebeloma crustuliniforme | Poisonpie | Agaricales | Common |
| Hebeloma fastibile | Agaricales | Rare | |
| Hebeloma fastibile var. fastibile | Agaricales | ? | |
| Hebeloma fragilipes | Agaricales | Rare | |
| Hebeloma leucosarx | Agaricales | Rare | |
| Hebeloma longicaudum | Agaricales | Occasional | |
| Hebeloma mesophaeum | Agaricales | Occasional | |
| Hebeloma mesophaeum var. mesophaeum | Veiled Poisonpie | Agaricales | ? |
| Hebeloma pallidoluctuosum non Hebeloma latifolium P. Karst., 1898 | Agaricales | ? | |
| Hebeloma radicosum | Rooting Poisonpie | Agaricales | Rare |
| Hebeloma sacchariolens | Sweet Poisonpie | Agaricales | Occasional |
| Hebeloma senescens | Agaricales | ? | |
| Hebeloma sinapizans | Bitter Poisonpie | Agaricales | Rare |
| Hebeloma subsaponaceum | Agaricales | ? | |
| Hebeloma testaceum | Agaricales | ? | |
| Helicogloea lagerheimii | Resupinate | ? | |
| Helminthosphaeria clavariarum | Aphyllophorales | ? | |
| Helotium consobrinum | Discomycetes | ? | |
| Helvella acetabulum | Vinegar Cup | Ascomycetes | Rare |
| Helvella atra | Ascomycetes | Rare | |
| Helvella crispa | White Saddle | Ascomycetes | Common |
| Helvella elastica | Elastic Saddle | Ascomycetes | Occasional |
| Helvella ephippium | Ascomycetes | Rare | |
| Helvella lacunosa | Elfin Saddle | Ascomycetes | Occasional |
| Helvella macropus | Felt Saddle | Ascomycetes | Rare |
| Hemimycena angustispora | Agaricales | ? | |
| Hemimycena gracilis | Agaricales | Rare | |
| Hemimycena lactea | Milky Bonnet | Agaricales | Occasional |
| Hemimycena tortuosa | Dewdrop Bonnet | Agaricales | Rare |
| Heterobasidion annosum | Root Rot | Polyporales | Common |
| Heterosphaeria patella | Discomycetes | ? | |
| Heyderia abietis | Ascomycetes | Rare | |
| Humaria hemisphaerica | Glazed Cup | Ascomycetes | Rare |
| Hyalinia dilutella | Ascomycetes | Rare | |
| Hyalopeziza ciliata | Discomycetes | ? | |
| Hyalopeziza millepunctata | Discomycetes | ? | |
| Hyalopeziza pygmaea | Discomycetes | ? | |
| Hyalopeziza trichodea | Discomycetes | ? | |
| Hyalorbilia inflatula (as Orbilia auricolor) | Discomycetes | Rare | |
| Hyaloscypha aureliella var. Spiralis | Discomycetes | ? | |
| Hyaloscypha fuckelii var. alniseda | Discomycetes | Rare | |
| Hyaloscypha fuckelii var. fuckelii (as Hyaloscypha fuckelii) | Discomycetes | Rare | |
| Hyaloscypha hyalina | Discomycetes | ? | |
| Hyaloscypha leuconica | Discomycetes | ? | |
| Hyaloscypha leuconica var. leuconica | Discomycetes | ? | |
| Hydnellum aurantiacum | Orange Tooth | Agaricales | Occasional |
| Hydnum repandum | Wood Hedgehog | Agaricales | Frequent |
| Hydnum rufescens | Terracotta Hedgehog | Agaricales | Common |
| Hydropisphaeria peziza | Ascomycetes | Rare | |
| Hydropus floccipes | Agaricales | ? | |
| Hygrocybe acutoconica (as Hygrocybe persistens) | Agaricales | Occasional | |
| Hygrocybe aurantiosplendens | Orange Waxcap | Agaricales | Occasional |
| Hygrocybe calyptriformis | Pink Waxcap | Agaricales | Rare |
| Hygrocybe calyptriformis var. calyptriformis | Pink Waxcap | Agaricales | Rare |
| Hygrocybe cantharellus | Goblet Waxcap | Agaricales | Occasional |
| Hygrocybe ceracea | Butter Waxcap | Agaricales | Common |
| Hygrocybe chlorophana | Golden Waxcap | Agaricales | Frequent |
| Hygrocybe citrina | Agaricales | Occasional | |
| Hygrocybe citrinovirens | Citrine Waxcap | Agaricales | Occasional |
| Hygrocybe coccinea | Scarlet Waxcap | Agaricales | Frequent |
| Hygrocybe colemanniana | Toasted Waxcap | Agaricales | Rare |
| Hygrocybe conica | Blackening Waxcap | Agaricales | Frequent |
| Hygrocybe flavipes | Yellow Foot Waxcap | Agaricales | Occasional |
| Hygrocybe fornicata | Earthy Waxcap | Agaricales | Rare |
| Hygrocybe glutinipes | Glutinous Waxcap | Agaricales | Occasional |
| Hygrocybe glutinipes var. glutinipes | Glutinous Waxcap | Agaricales | Occasional |
| Hygrocybe ingrata | Agaricales | Rare | |
| Hygrocybe insipida | Spangle Waxcap | Agaricales | Occasional |
| Hygrocybe intermedia | Fibrous Waxcap | Agaricales | Occasional |
| Hygrocybe irrigata | Slimy Waxcap | Agaricales | Occasional |
| Hygrocybe lacmus | Grey Waxcap | Agaricales | Rare |
| Hygrocybe laeta | Heath Waxcap | Agaricales | Rare |
| Hygrocybe laeta var. laeta | Heath Waxcap | Agaricales | Rare |
| Hygrocybe marchii | Agaricales | Rare | |
| Hygrocybe miniata | Vermilion Waxcap | Agaricales | Occasional |
| Hygrocybe mollis | Agaricales | ? | |
| Hygrocybe mucronella | Bitter Waxcap | Agaricales | Rare |
| Hygrocybe nigrescens | Agaricales | ? | |
| Hygrocybe nitrata | Nitrous Waxcap | Agaricales | Occasional |
| Hygrocybe obrussea | Agaricales | Rare | |
| Hygrocybe ovina | Blushing Waxcap | Agaricales | ? |
| Hygrocybe phaeococcinea | Agaricales | Rare | |
| Hygrocybe pratensis var. pallida nom. inval. | Pale Waxcap | Agaricales | Rare |
| Hygrocybe pratensis var. pratensis nom. inval. | Meadow Waxcap | Agaricales | Rare |
| Hygrocybe psittacina var. perplexa | Parrot Waxcap | Agaricales | Rare |
| Hygrocybe psittacina var. psittacina | Parrot Waxcap | Agaricales | Common |
| Hygrocybe punicea | Crimson Waxcap | Agaricales | Occasional |
| Hygrocybe quieta | Oily Waxcap | Agaricales | Rare |
| Hygrocybe radiata | Slender Waxcap | Agaricales | ? |
| Hygrocybe reidii | Honey Waxcap | Agaricales | Occasional |
| Hygrocybe russocoriacea | Cedarwood Waxcap | Agaricales | Occasional |
| Hygrocybe sciophanoides | Agaricales | ? | |
| Hygrocybe spadicea | Date Waxcap | Agaricales | ? |
| Hygrocybe splendidissima | Splendid Waxcap | Agaricales | ? |
| Hygrocybe turunda | Agaricales | ? | |
| Hygrocybe virginea | Agaricales | Frequent | |
| Hygrocybe virginea var. fuscescens | Agaricales | ? | |
| Hygrocybe virginea var. ochraceopallida | Agaricales | Rare | |
| Hygrocybe virginea var. virginea | Snowy Waxcap | Agaricales | Frequent |
| Hygrocybe vitellina | Agaricales | ? | |
| Hygrophoropsis aurantiaca | False Chanterelle | Agaricales | Abundant |
| Hygrophoropsis macrospora | Agaricales | ? | |
| Hygrophorus arbustivus | Agaricales | ? | |
| Hygrophorus chrysodon | Gold Flecked Woodwax | Agaricales | ? |
| Hygrophorus cinereus | Agaricales | ? | |
| Hygrophorus cossus | Agaricales | Rare | |
| Hygrophorus discoideus | Agaricales | Rare | |
| Hygrophorus eburneus | Ivory Woodwax | Agaricales | Occasional |
| Hygrophorus hypothejus | Herald of Winter | Agaricales | Rare |
| Hygrophorus nemoreus | Oak Woodwax | Agaricales | Rare |
| Hygrophorus olivaceoalbus | Agaricales | ? | |
| Hygrophorus persoonii | Agaricales | ? | |
| Hymenochaete corrugata | Glue Crust | Resupinate | Common |
| Hymenochaete rubiginosa | Oak Curtain Crust | Resupinate | Frequent |
| Hymenochaete tabacina | Resupinate | Occasional | |
| Hymenoscyphus albidus | Discomycetes | ? | |
| Hymenoscyphus calyculus | Discomycetes | ? | |
| Hymenoscyphus caudatus | Discomycetes | ? | |
| Hymenoscyphus epiphyllus | Discomycetes | ? | |
| Hymenoscyphus fagineus | Discomycetes | Rare | |
| Hymenoscyphus fructigenus | Nut Disco | Discomycetes | Common |
| Hymenoscyphus imberbis | Discomycetes | ? | |
| Hymenoscyphus laetus | Discomycetes | Rare | |
| Hymenoscyphus phyllogenus | Discomycetes | ? | |
| Hymenoscyphus pileatus | Discomycetes | ? | |
| Hymenoscyphus repandus | Discomycetes | ? | |
| Hymenoscyphus salicellus | Discomycetes | ? | |
| Hymenoscyphus scutula | Discomycetes | ? | |
| Hymenoscyphus serotinus | Discomycetes | ? | |
| Hymenoscyphus vernus | Discomycetes | ? | |
| Hymenoscyphus vitellinus | Discomycetes | Rare | |
| Hymenoscyphus vitigenus | Discomycetes | Rare | |
| Hymenostilbe muscaria | Discomycetes | ? | |
| Hyphoderma praetermissum | Resupinate | ? | |
| Hyphoderma roseocremeum | Resupinate | ? | |
| Hyphoderma setigerum | Resupinate | ? | |
| Hyphodontia alutacea | Resupinate | ? | |
| Hyphodontia arguta (as Hydnum argutum) | Resupinate | ? | |
| Hyphodontia barba-jovis | Resupinate | ? | |
| Hyphodontia crustosa | Resupinate | ? | |
| Hyphodontia nespori | Resupinate | ? | |
| Hyphodontia pallidula | Resupinate | ? | |
| Hyphodontia quercina | Resupinate | ? | |
| Hyphodontia sambuci | Elder Whitewash | Resupinate | Common |
| Hyphodontia subalutacea | Resupinate | ? | |
| Hypholoma capnoides | Conifer Tuft | Agaricales | Occasional |
| Hypholoma elongatum | Sphagnum Brownie | Agaricales | Rare |
| Hypholoma epixanthum | Agaricales | ? | |
| Hypholoma ericaeum | Agaricales | Rare | |
| Hypholoma fasciculare | Sulphur Tuft | Agaricales | Abundant |
| Hypholoma fasciculare var. fasciculare | Sulphur Tuft | Agaricales | Abundant |
| Hypholoma lateritium (as Hypholoma sublateritium) | Brick Tuft | Agaricales | Common |
| Hypholoma marginatum | Snakeskin Brownie | Agaricales | Occasional |
| Hypholoma myosotis | Olive Brownie | Agaricales | ? |
| Hypholoma radicosum | Rooting Brownie | Agaricales | Rare |
| Hypholoma subericaeum | Agaricales | ? | |
| Hypochnicium erikssonii | Resupinate | ? | |
| Hypochnicium vellereum | Resupinate | ? | |
| Hypocrea citrina | Ascomycetes | Occasional | |
| Hypocrea gelatinosa | Ascomycetes | ? | |
| Hypocrea pulvinata | Ochre Cushion | Ascomycetes | Common |
| Hypocrea rufa | Ascomycetes | Rare | |
| Hypocrea schweinitzii | Ascomycetes | ? | |
| Hypoderma commune | Ascomycetes | ? | |
| Hypoderma hederae | Ascomycetes | ? | |
| Hypoderma ilicinum | Ascomycetes | ? | |
| Hypoderma rubi | Ascomycetes | ? | |
| Hypomyces aurantius | Ascomycetes | ? | |
| Hypomyces chrysospermus (as Apiocrea chrysosperma) | Bolete Mould | Ascomycetes | Occasional |
| Hypomyces lateritius | Ascomycetes | ? | |
| Hypomyces ochraceus | Ascomycetes | ? | |
| Hypomyces rosellus | Ascomycetes | Occasional | |
| Hypospilina pustula | Ascomycetes | ? | |
| Hypoxylon fragiforme | Beech Woodwart | Ascomycetes | Common |
| Hypoxylon fuscum | Hazel Woodwart | Ascomycetes | Frequent |
| Hypoxylon howeanum | Ascomycetes | Occasional | |
| Hypoxylon intermedium | Ascomycetes | Rare | |
| Hypoxylon multiforme | Birch Woodwart | Ascomycetes | Occasional |
| Hypoxylon petriniae | Ascomycetes | Rare | |
| Hypoxylon rubiginosum | Rusty Woodwart | Ascomycetes | Rare |
| Hypoxylon rutilum | Ascomycetes | ? | |
| Hysterium angustatum | Ascomycetes | ? | |
| Hysterium pulicare | Ascomycetes | ? | |
| Hysterographium fraxini | Ascomycetes | ? | |
| Incrucipulum capitatum | Discomycetes | Rare | |
| Incrucipulum ciliare | Discomycetes | ? | |
| Inocybe abjecta | Agaricales | ? | |
| Inocybe appendiculata | Agaricales | ? | |
| Inocybe assimilata | Agaricales | ? | |
| Inocybe asterospora | Star Fibrecap | Agaricales | Occasional |
| Inocybe auricoma | Agaricales | ? | |
| Inocybe bongardii | Fruity Fibrecap | Agaricales | Occasional |
| Inocybe calamistrata | Greenfoot Fibrecap | Agaricales | Rare |
| Inocybe calospora | Agaricales | Rare | |
| Inocybe cervicolor | Agaricales | ? | |
| Inocybe cincinnata | Agaricales | ? | |
| Inocybe cincinnata var. cincinnata | Collared Fibrecap | Agaricales | ? |
| Inocybe cookei | Straw Fibrecap | Agaricales | Occasional |
| Inocybe corydalina | Agaricales | Occasional | |
| Inocybe corydalina var. corydalina | Greenflush Fibrecap | Agaricales | Occasional |
| Inocybe curvipes | Agaricales | ? | |
| Inocybe descissa | Agaricales | ? | |
| Inocybe erubescens (as Inocybe patouillardii) | Deadly Fibrecap | Agaricales | ? |
| Inocybe eutheles | Agaricales | ? | |
| Inocybe fibrosoides | Agaricales | ? | |
| Inocybe flocculosa | Fleecy Fibrecap | Agaricales | Rare |
| Inocybe fraudans | Agaricales | Rare | |
| Inocybe fulvella | Agaricales | ? | |
| Inocybe geophylla | Agaricales | Common | |
| Inocybe geophylla var. geophylla | White Fibrecap | Agaricales | Common |
| Inocybe geophylla var. lilacina | Lilac Fibrecap | Agaricales | Occasional |
| Inocybe godeyi | Agaricales | Rare | |
| Inocybe grammata | Agaricales | ? | |
| Inocybe hirtella var. hirtella | Agaricales | Rare | |
| Inocybe hystrix | Scaly Fibrecap | Agaricales | Occasional |
| Inocybe jurana | Agaricales | ? | |
| Inocybe lacera | Agaricales | ? | |
| Inocybe lacera var. lacera | Torn Fibrecap | Agaricales | ? |
| Inocybe langei | Agaricales | ? | |
| Inocybe lanuginosa | Agaricales | Rare | |
| Inocybe maculata | Frosty Fibrecap | Agaricales | Rare |
| Inocybe margaritispora | Agaricales | ? | |
| Inocybe mixtilis | Agaricales | ? | |
| Inocybe mutica | Agaricales | ? | |
| Inocybe napipes | Bulbous Fibrecap | Agaricales | Occasional |
| Inocybe petiginosa | Scurfy Fibrecap | Agaricales | Rare |
| Inocybe phaeodisca var. phaeodisca | Agaricales | ? | |
| Inocybe praetervisa | Agaricales | Rare | |
| Inocybe pusio | Agaricales | ? | |
| Inocybe pyriodora | Pear Fibrecap | Agaricales | Rare |
| Inocybe rimosa | Split Fibrecap | Agaricales | Rare |
| Inocybe sindonia | Agaricales | Occasional | |
| Inocybe tigrina | Agaricales | ? | |
| Inocybe trechispora | Agaricales | ? | |
| Inocybe umbratica | Agaricales | ? | |
| Inocybe whitei | Blushing Fibrecap | Agaricales | Rare |
| Inonotus cuticularis | Polyporales | ? | |
| Inonotus hispidus | Shaggy Bracket | Polyporales | Occasional |
| Inonotus obliquus | Polyporales | ? | |
| Iodophanus carneus | Discomycetes | ? | |
| Isaria farinosa (Paecilomyces farinosus) | Ascomycetes | Rare | |
| Ischnoderma benzoinum | Benzoin Bracket | Polyporales | Rare |
| Junghuhnia nitida | Resupinate | Rare | |
| Kretzschmaria deusta | Brittle Cinder | Polyporales | Frequent |
| Kuehneola uredinis (as Kuehneola albida) | Pale Bramble Rust | Pucciniales | Occasional |
| Kuehneromyces mutabilis | Sheathed Woodtuft | Pucciniales | Occasional |
| Laccaria amethystina | Amethyst Deceiver | Pucciniales | Abundant |
| Laccaria bicolor | Bicoloured Deceiver | Agaricales | Rare |
| Laccaria laccata | Deceiver | Agaricales | Abundant |
| Laccaria proxima | Scurfy Deceiver | Agaricales | Rare |
| Laccaria purpureobadia | Agaricales | Rare | |
| Laccaria tortilis | Twisted Deceiver | Agaricales | Rare |
| Lachnella alboviolascens | Discomycetes | Rare | |
| Lachnella villosa | Discomycetes | ? | |
| Lachnellula calycina | Discomycetes | ? | |
| Lachnellula occidentalis | Larch Disco | Discomycetes | Rare |
| Lachnellula subtilissima | Conifer Disco | Discomycetes | Rare |
| Lachnellula willkommii | Discomycetes | ? | |
| Lachnum aeruginellum | Discomycetes | ? | |
| Lachnum apalum | Rush Disco | Discomycetes | ? |
| Lachnum bicolor | Discomycetes | ? | |
| Lachnum brevipilosum (as Dasyscyphus brevipilus) | Discomycetes | Rare | |
| Lachnum brevipilosum non Lachnum brevipilum (Höhn.) Nannf., 1932 | Discomycetes | ? | |
| Lachnum capitatum | Discomycetes | ||
| Lachnum caricis | Discomycetes | ||
| Lachnum carneolum var. longisporum | Discomycetes | ? | |
| Lachnum cerinum | Discomycetes | ? | |
| Lachnum clavigerum | Discomycetes | ? | |
| Lachnum controversum | Discomycetes | ? | |
| Lachnum corticale | Discomycetes | ? | |
| Lachnum crystallinum | Discomycetes | Rare | |
| Lachnum diminutum | Discomycetes | ? | |
| Lachnum dumorum | Discomycetes | ? | |
| Lachnum fuscescens | Discomycetes | ? | |
| Lachnum impudicum | Discomycetes | Rare | |
| Lachnum niveum | Discomycetes | ? | |
| Lachnum nudipes | Discomycetes | ? | |
| Lachnum pteridis | Discomycetes | ? | |
| Lachnum pygmaeum | Discomycetes | ? | |
| Lachnum soppittii | Discomycetes | ? | |
| Lachnum subvirgineum | Discomycetes | Rare | |
| Lachnum tenuissimum | Discomycetes | ? | |
| Lachnum virgineum | Snowy Disco | Discomycetes | ? |
| Lacrymaria lacrymabunda | Weeping Widow | Agaricales | Common |
| Lacrymaria pyrotricha | Agaricales | ? | |
| Lactarius aspideus | Agaricales | ? | |
| Lactarius aurantiacus | Orange Milkcap | Agaricales | Common |
| Lactarius azonites | Agaricales | Rare | |
| Lactarius bertillonii | Agaricales | ? | |
| Lactarius blennius | Beech Milkcap | Agaricales | Common |
| Lactarius camphoratus | Curry Milkcap | Agaricales | Occasional |
| Lactarius chrysorrheus | Yellowdrop Milkcap | Agaricales | Frequent |
| Lactarius circellatus | Agaricales | Occasional | |
| Lactarius citriolens | Agaricales | Rare | |
| Lactarius controversus | Agaricales | ? | |
| Lactarius decipiens | Agaricales | ? | |
| Lactarius deliciosus | Saffron Milkcap | Agaricales | Common |
| Lactarius deterrimus | False Saffron Milkcap | Agaricales | Common |
| Lactarius flavidus | Agaricales | ? | |
| Lactarius flexuosus | Agaricales | Rare | |
| Lactarius fluens | Agaricales | Occasional | |
| Lactarius fuliginosus | Sooty Milkcap | Agaricales | Common |
| Lactarius fulvissimus | Tawny Milkcap | Agaricales | Common |
| Lactarius glyciosmus | Coconut Milkcap | Agaricales | Occasional |
| Lactarius helvus | Fenugreek Milkcap | Agaricales | Occasional |
| Lactarius hepaticus | Liver Milkcap | Agaricales | Common |
| Lactarius hysginoides | Agaricales | Rare | |
| Lactarius hysginus | Agaricales | Rare | |
| Lactarius lacunarum | Agaricales | ? | |
| Lactarius lignyotus | Agaricales | ? | |
| Lactarius lilacinus | Agaricales | ? | |
| Lactarius obscuratus | Alder Milkcap | Agaricales | ? |
| Lactarius pallidus | Pale Milkcap | Agaricales | Rare |
| Lactarius piperatus | Peppery Milkcap | Agaricales | Common |
| Lactarius pterosporus | Agaricales | Frequent | |
| Lactarius pubescens | Bearded Milkcap | Agaricales | Occasional |
| Lactarius pyrogalus | Fiery Milkcap | Agaricales | Common |
| Lactarius quieticolor | Agaricales | Rare | |
| Lactarius quietus | Oakbug Milkcap | Agaricales | ? |
| Lactarius rostratus (cremor) | Agaricales | ? | |
| Lactarius rufus | Rufous Milkcap | Agaricales | Common |
| Lactarius scrobiculatus | Agaricales | ? | |
| Lactarius serifluus | Watery Milkcap | Agaricales | Occasional |
| Lactarius spinosulus | Lilacscale Milkcap | Agaricales | ? |
| Lactarius subdulcis | Mild Milkcap | Agaricales | Frequent |
| Lactarius subumbonatus | Agaricales | Common | |
| Lactarius tabidus | Birch Milkcap | Agaricales | Abundant |
| Lactarius torminosus | Woolly Milkcap | Agaricales | Frequent |
| Lactarius trivialis | Agaricales | ? | |
| Lactarius turpis | Ugly Milkcap | Agaricales | Frequent |
| Lactarius uvidus | Agaricales | Occasional | |
| Lactarius vellereus | Fleecy Milkcap | Agaricales | Rare |
| Lactarius vietus | Grey Milkcap | Agaricales | Occasional |
| Lactarius violascens | Agaricales | ? | |
| Lactarius volemus | Agaricales | ? | |
| Laetinaevia carneoflavida | Discomycetes | ? | |
| Laetiporus sulphureus | Chicken of the Woods | Polyporales | Occasional |
| Laetisaria fuciformis | Red Thread | Agaricales | Rare |
| Lamprospora carbonicola | Discomycetes | ? | |
| Lamprospora crechqueraultii var. crechqueraultii | Discomycetes | ? | |
| Lamprospora crechqueraultii var. macrantha | Discomycetes | ? | |
| Lamprospora crouanii | Discomycetes | ? | |
| Lamprospora polytrichi | Discomycetes | ? | |
| Lanzia echinophila | Discomycetes | ? | |
| Lanzia luteovirescens | Discomycetes | ? | |
| Lasiobelonium nidulum (as Dasyscyphus nidulus) | Discomycetes | ? | |
| Lasiobolus macrotrichus | Discomycetes | ? | |
| Lasiosphaeria canescens | Discomycetes | ? | |
| Lasiosphaeria hirsuta | Discomycetes | ? | |
| Lasiosphaeria ovina | Discomycetes | ? | |
| Lasiosphaeria spermoides | Discomycetes | ? | |
| Leccinum aurantiacum (L. quercinum) | Boletales | Frequent | |
| Leccinum crocipodium | Saffron Bolete | Boletales | Rare |
| Leccinum duriusculum | Slate Bolete | Boletales | Rare |
| Leccinum holopus | Ghost Bolete | Boletales | Rare |
| Leccinum melaneum | Boletales | ? | |
| Leccinum pseudoscabrum (carpini) | Hazel Bolete | Boletales | Occasional |
| Leccinum scabrum (roseofractum) | Brown Birch Bolete | Boletales | Frequent |
| Leccinum variicolor | Mottled Bolete | Boletales | Occasional |
| Leccinum versipelle | Orange Birch Bolete | Boletales | Common |
| Lentinellus cochleatus | Aniseed Cockleshell | Agaricales | Rare |
| Lentinus tigrinus | Agaricales | ? | |
| Lenzites betulina | Birch Mazegill | Polyporales | Rare |
| Leotia lubrica | Jellybaby | Agaricales | Common |
| Lepiota aspera | Freckled Dapperling | Agaricales | Rare |
| Lepiota boudieri | Girdled Dapperling | Agaricales | ? |
| Lepiota castanea | Chestnut Dapperling | Agaricales | Occasional |
| Lepiota clypeolaria | Shield Dapperling | Agaricales | Occasional |
| Lepiota cristata | Stinking Dapperling | Agaricales | Common |
| Lepiota echinacea | Agaricales | Rare | |
| Lepiota echinella | Agaricales | ? | |
| Lepiota felina | Agaricales | Occasional | |
| Lepiota fuscovinacea | Agaricales | Rare | |
| Lepiota ignivolvata | Agaricales | Occasional | |
| Lepiota magnispora | Agaricales | ? | |
| Lepiota oreadiformis | Agaricales | ? | |
| Lepiota pseudolilacea | Agaricales | ? | |
| Lepiota subgracilis | Agaricales | ? | |
| Lepiota subincarnata | Fatal Dapperling | Agaricales | ? |
| Lepiota xanthophylla non sensu B&K | Agaricales | ? | |
| Lepista flaccida (as Clitocybe flaccida) | Tawny Funnel | Agaricales | Frequent |
| Lepista glaucocana | Agaricales | ? | |
| Lepista luscina | Agaricales | Rare | |
| Lepista nuda | Wood Blewit | Agaricales | Common |
| Lepista saeva | Field Blewit | Agaricales | Common |
| Lepista sordida | Agaricales | Rare | |
| Leptoporus mollis | Polyporales | ? | |
| Leptosphaeria acuta | Nettle Rash | Ascomycetes | ? |
| Leptosphaeria doliolum var. doliolum (as Leptosphaeria doliolum) | Ascomycetes | Rare | |
| Leptosphaeria ogilviensis | Ascomycetes | Rare | |
| Leptospora rubella | Ascomycetes | ? | |
| Leptotrochila prunellae | Discomycetes | ? | |
| Leptotrochila ranunculi (as Dothidea ranunculi) | Discomycetes | Rare | |
| Leptotrochila verrucosa | Discomycetes | ? | |
| Leucoagaricus badhamii | Blushing Dapperling | Agaricales | ? |
| Leucoagaricus leucothites | White Dapperling | Agaricales | ? |
| Leucoagaricus nympharum | Agaricales | ? | |
| Leucoagaricus serenus | Agaricales | ? | |
| Leucocoprinus brebissonii | Skullcap Dapperling | Agaricales | ? |
| Leucocortinarius bulbiger | White Webcap | Agaricales | ? |
| Leucogyrophana mollusca | Resupinate | ? | |
| Leucopaxillus giganteus | Giant Funnel | Agaricales | ? |
| Leucoscypha erminea | Discomycetes | ? | |
| Leucoscypha leucotricha | Discomycetes | ? | |
| Leucostoma auerswaldii | Discomycetes | Rare | |
| Leucostoma kunzei | Pucciniales | Rare | |
| Leveillula verbasci | Pucciniales | ? | |
| Lichenomphalia umbellifera (Omphalina ericetorum) | Pucciniales | Rare | |
| Limacella guttata | Pucciniales | ? | |
| Lophodermium conigenum | Discomycetes | ? | |
| Lophodermium foliicola | Discomycetes | ? | |
| Lophodermium petiolicola | Discomycetes | Rare | |
| Lophodermium pinastri | Pine Needle Split | Discomycetes | ? |
| Lophodermium pini-excelsae | Discomycetes | Rare | |
| Lophodermium seditiosum | Discomycetes | ? | |
| Lophomerum ponticum | Discomycetes | ? | |
| Luellia recondita | Resupinate | ? | |
| Lycoperdon dermoxanthum (as Bovista pusilla) | Gasteromycetes | Rare | |
| Lycoperdon echinatum | Spiny Puffball | Gasteromycetes | Occasional |
| Lycoperdon excipuliforme (as Calvatia excipuliformis) | Pestle Puffball | Frequent | |
| Lycoperdon lividum | Grassland Puffball | Gasteromycetes | Rare |
| Lycoperdon mammiforme | Flaky Puffball | Gasteromycetes | Rare |
| Lycoperdon molle | Soft Puffball | Gasteromycetes | Frequent |
| Lycoperdon nigrescens | Dusky Puffball | Gasteromycetes | ? |
| Lycoperdon perlatum | Common Puffball | Gasteromycetes | Abundant |
| Lycoperdon pratense (as Vascellum pratense) | Meadow Puffball | ||
| Lycoperdon pyriforme | Stump Puffball | Gasteromycetes | Abundant |
| Lycoperdon umbrinum | Umber Brown Puffball | Gasteromycetes | ? |
| Lycoperdon utriforme (as Calvatia utriformis) | Mosaic Puffball | Gasteromycetes | Occasional |
| Lyophyllum connatum | White Domecap | Agaricales | Occasional |
| Lyophyllum decastes | Clustered Domecap | Agaricales | Rare |
| Lyophyllum fumosum | Agaricales | ? | |
| Lyophyllum loricatum | Agaricales | ? | |
| Lyophyllum semitale | Agaricales | ? | |
| Macrocystidia cucumis | Cucumber Cap | Agaricales | Rare |
| Macrolepiota excoriata | Agaricales | ? | |
| Macrolepiota konradii | Agaricales | Occasional | |
| Macrolepiota mastoidea | Slender Parasol | Agaricales | Common |
| Macrolepiota procera | Agaricales | Frequent | |
| Macrolepiota procera var. procera | Parasol | Agaricales | Frequent |
| Macrotyphula fistulosa | Aphyllophorales | Occasional | |
| Macrotyphula fistulosa var. fistulosa | Pipe Club | Aphyllophorales | Occasional |
| Macrotyphula juncea | Slender Club | Aphyllophorales | Occasional |
| Marasmiellus candidus | Agaricales | Common | |
| Marasmiellus ramealis | Twig Parachute | Agaricales | Frequent |
| Marasmiellus vaillantii | Goblet Parachute | Agaricales | Rare |
| Marasmius alliaceus | Garlic Parachute | Agaricales | Rare |
| Marasmius calopus | Agaricales | Occasional | |
| Marasmius cohaerens | Agaricales | Occasional | |
| Marasmius curreyi | Agaricales | Rare | |
| Marasmius epiphylloides | Agaricales | Rare | |
| Marasmius epiphyllus | Leaf Parachute | Agaricales | Occasional |
| Marasmius graminum | Agaricales | ? | |
| Marasmius oreades | Fairy Ring Champignon | Agaricales | Common |
| Marasmius porreus | Agaricales | ? | |
| Marasmius rotula | Collared Parachute | Agaricales | Common |
| Marasmius setosus (M. recubans) | Agaricales | ? | |
| Marasmius torquescens | Agaricales | Rare | |
| Marasmius undatus | Agaricales | ? | |
| Marasmius wynneae | Pearly Parachute | Agaricales | Rare |
| Marcelleina persoonii | Ascomycetes | ? | |
| Massarina arundinacea | Ascomycetes | ? | |
| Mastigosporium album | Pucciniales | ? | |
| Megacollybia platyphylla (as Tricholomopsis platyphylla) | Whitelaced Shank | Pucciniales | Occasional |
| Melampsora caprearum | Pucciniales | Common | |
| Melampsora hypericorum | Pucciniales | Common | |
| Melampsora laricis-populina | Pucciniales | ? | |
| Melampsora lini | Pucciniales | ? | |
| Melampsora populnea | Pucciniales | Occasional | |
| Melampsorella symphyti | Pucciniales | Occasional | |
| Melampsoridium betulinum | Birch Rust | Pucciniales | Occasional |
| Melanconis stilbostoma | Pucciniales | ? | |
| Melanoleuca arcuata | Pucciniales | ? | |
| Melanoleuca brevipes | Pucciniales | Rare | |
| Melanoleuca cognata | Pucciniales | Occasional | |
| Melanoleuca cognata var. cognata | Spring Cavalier | Pucciniales | Occasional |
| Melanoleuca exscissa | Pucciniales | Rare | |
| Melanoleuca exscissa var. exscissa | Smoky Cavalier | Pucciniales | Rare |
| Melanoleuca grammopodia | Pucciniales | Occasional | |
| Melanoleuca humilis | Pucciniales | ? | |
| Melanoleuca melaleuca | Pucciniales | Common | |
| Melanoleuca polioleuca | Common Cavalier | Agaricales | Rare |
| Melanoleuca strictipes | Agaricales | ? | |
| Melanomma pulvis-pyrius | Ascomycetes | Rare | |
| Melanophyllum eyrei | Greenspored Dapperling | Agaricales | ? |
| Melanophyllum haematospermum | Redspored Dapperling | Agaricales | ? |
| Melanopsamma pomiformis | Ascomycetes | ? | |
| Melanotus horizontalis | Wood Oysterling | Agaricales | Rare |
| Melanotus phillipsii | Agaricales | Rare | |
| Melastiza cornubiensis (as Melastiza chateri) | Orange Cup | Ascomycetes | Rare |
| Mensularia radiata (as Inonotus radiatus) | Alder Bracket | Polyporales | Common |
| Meripilus giganteus | Giant Polyporales | Polyporales | Rare |
| Merismodes anomala | Discomycetes | ? | |
| Merismodes fasciculata | Discomycetes | ? | |
| Merulicium fusisporum | Resupinate | ? | |
| Microbotryum violaceum | Campion Anther Smut | Pucciniales | Occasional |
| Microglossum olivaceum | Olive Earthtongue | Pucciniales | Rare |
| Microglossum viride | Pucciniales | Rare | |
| Micromphale foetidum | Foetid Parachute | Pucciniales | Rare |
| Micropeziza karstenii | Pucciniales | ? | |
| Micropodia pteridina | Pucciniales | Rare | |
| Microscypha enrhiza | Pucciniales | Rare | |
| Microscypha grisella | Pucciniales | ? | |
| Microscypha muelleri (as Actinoscypha muelleri) | Pucciniales | R | |
| Microthyrium ciliatum var. ciliatum | Pucciniales | ? | |
| Microthyrium cytisi var. cytisi | Pucciniales | ? | |
| Microthyrium cytisi var. ulicis-gallii | Pucciniales | ? | |
| Microthyrium inconspicuum | Pucciniales | ? | |
| Microthyrium macrosporum | Pucciniales | ? | |
| Microthyrium microscopicum | Pucciniales | ? | |
| Microthyrium pinophyllum | Pucciniales | ? | |
| Microthyrium versicolor | Pucciniales | R | |
| Miladina lecithina | Pucciniales | R | |
| Milesina blechni | Pucciniales | ? | |
| Milesina dieteliana | Pucciniales | ? | |
| Milesina kriegeriana | Pucciniales | ? | |
| Milesina scolopendrii | Pucciniales | ? | |
| Mitrophora semilibera | Semifree Morel | Ascomycetes | Rare |
| Mitrula paludosa | Bog Beacon | Ascomycetes | Occasional |
| Mollisia amenticola | Discomycetes | ? | |
| Mollisia benesuada | Discomycetes | Rare | |
| Mollisia caespiticia | Discomycetes | ? | |
| Mollisia caricina | Discomycetes | ? | |
| Mollisia chionea | Discomycetes | ? | |
| Mollisia cinerea | Common Grey Disco | Discomycetes | Occasional |
| Mollisia cinerella | Discomycetes | ? | |
| Mollisia clavata (as Pyrenopeziza benesuada) | Discomycetes | Rare | |
| Mollisia conigena | Discomycetes | ? | |
| Mollisia discolor | Discomycetes | Rare | |
| Mollisia discolor var. longispora | Discomycetes | ? | |
| Mollisia fallax | Discomycetes | ? | |
| Mollisia fusca (as Tapesia fusca) | Discomycetes | Rare | |
| Mollisia hydrophila | Discomycetes | ? | |
| Mollisia juncina | Discomycetes | ? | |
| Mollisia ligni | Discomycetes | ? | |
| Mollisia melaleuca | Discomycetes | ? | |
| Mollisia nervicola | Discomycetes | ? | |
| Mollisia palustris | Discomycetes | Rare | |
| Mollisia plantaginis | Discomycetes | ? | |
| Mollisia pyrenopezizoides | Discomycetes | Rare | |
| Mollisia ramealis | Discomycetes | ? | |
| Mollisia spectabilis | Discomycetes | ? | |
| Mollisina acerina | Discomycetes | ? | |
| Mollisina rubi | Discomycetes | ? | |
| Mollisiopsis dennisii | Discomycetes | ? | |
| Monilinia fructicola | Discomycetes | ? | |
| Monilinia fructigena | Discomycetes | Rare | |
| Monilinia johnsonii | Discomycetes | Rare | |
| Monilinia laxa | Discomycetes | ? | |
| Morchella esculenta | Morel | Ascomycetes | Rare |
| Morenoina clarkii | Ascomycetes | Rare | |
| Mutinus caninus | Dog Stinkhorn | Gasteromycetes | Rare |
| Mycena acicula | Orange Bonnet | Agaricales | Occasional |
| Mycena aciculata | Agaricales | Rare | |
| Mycena adonis | Agaricales | ? | |
| Mycena adonis var. adonis | Scarlet Bonnet | Agaricales | ? |
| Mycena adscendens (as Mycena tenerrima) | Frosty Bonnet | Agaricales | Common |
| Mycena aetites | Drab Bonnet | Agaricales | Common |
| Mycena alcalina | Agaricales | Frequent | |
| Mycena amicta | Agaricales | Rare | |
| Mycena arcangeliana (as Mycena oortiana) | Angel's Bonnet | Agaricales | Occasional |
| Mycena atrocyanea | Agaricales | ? | |
| Mycena capillaripes | Pinkedge Bonnet | Agaricales | Occasional |
| Mycena capillaris | Beechleaf Bonnet | Agaricales | Frequent |
| Mycena chlorantha | Agaricales | ? | |
| Mycena cinerella | Mealy Bonnet | Agaricales | Rare |
| Mycena citrinomarginata | Agaricales | ? | |
| Mycena clavicularis | Agaricales | ? | |
| Mycena clavularis | Agaricales | Rare | |
| Mycena epipterygia | Yellowleg Bonnet | Agaricales | Common |
| Mycena epipterygia var. pelliculosa | Agaricales | Common | |
| Mycena epipterygioides | Agaricales | ? | |
| Mycena filopes | Iodine Bonnet | Agaricales | Rare |
| Mycena flavescens | Agaricales | Occasional | |
| Mycena flavoalba | Ivory Bonnet | Agaricales | Common |
| Mycena galericulata | Common Bonnet | Agaricales | Abundant |
| Mycena galopus | Agaricales | Frequent | |
| Mycena galopus var. candida | White Milking Bonnet | Agaricales | Common |
| Mycena galopus var. galopus | Milking Bonnet | Agaricales | Common |
| Mycena galopus var. nigra | Black Milking Bonnet | Agaricales | Common |
| Mycena haematopus | Burgundydrop Bonnet | Agaricales | Common |
| Mycena hiemalis | Agaricales | Rare | |
| Mycena inclinata | Clustered Bonnet | Agaricales | Common |
| Mycena leptocephala | Nitrous Bonnet | Agaricales | Rare |
| Mycena lineata | Agaricales | ? | |
| Mycena meliigena | Agaricales | ? | |
| Mycena metata | Agaricales | Rare | |
| Mycena mucor | Agaricales | ? | |
| Mycena olida | Rancid Bonnet | Agaricales | ? |
| Mycena olivaceomarginata | Brownedge Bonnet | Agaricales | ? |
| Mycena pelianthina | Blackedge Bonnet | Agaricales | Occasional |
| Mycena polyadelpha | Agaricales | Occasional | |
| Mycena polygramma | Grooved Bonnet | Agaricales | Frequent |
| Mycena pseudocorticola | Agaricales | ? | |
| Mycena pterigena | Agaricales | ? | |
| Mycena pura | Lilac Bonnet | Agaricales | Abundant |
| Mycena rorida | Dripping Bonnet | Agaricales | Rare |
| Mycena rosea | Rosy Bonnet | Agaricales | Occasional |
| Mycena rosella | Pink Bonnet | Agaricales | Rare |
| Mycena rubromarginata | Red Edge Bonnet | Agaricales | ? |
| Mycena sanguinolenta | Bleeding Bonnet | Agaricales | Common |
| Mycena smithiana | Agaricales | ? | |
| Mycena speirea | Bark Bonnet | Agaricales | Rare |
| Mycena stipata | Agaricales | Rare | |
| Mycena stylobates | Bulbous Bonnet | Agaricales | Occasional |
| Mycena vitilis | Snapping Bonnet | Agaricales | Rare |
| Mycena vulgaris | Agaricales | Rare | |
| Mycena zephirus | Agaricales | Rare | |
| Mycenella bryophila | Agaricales | ? | |
| Mycetinis scorodonius (as Marasmius scorodonius) | Agaricales | Rare | |
| Mycoacia fuscoatra | Resupinate | Rare | |
| Mycoacia uda | Resupinate | ? | |
| Mycosphaerella brassicicola | Ascomycetes | ? | |
| Mycosphaerella dianthi | Ascomycetes | ? | |
| Mycosphaerella fragariae | Ascomycetes | ? | |
| Mycosphaerella isariphora | Ascomycetes | ? | |
| Mycosphaerella pteridis | Ascomycetes | Rare | |
| Mycosphaerella punctiformis | Ascomycetes | ? | |
| Mycosphaerella rubi (as Septoria rubi) | Ascomycetes | ? | |
| Mycosphaerella superflua | Ascomycetes | ? | |
| Mycovellosiella fulva | Pathogen | ? | |
| Myriosclerotinia curreyana (as Sclerotinia curreyana) | Ascomycetes | ? | |
| Mytilinidion gemmigenum | Ascomycetes | ? | |
| Myxomphalia maura | Agaricales | ? | |
| Naevala perexigua | Discomycetes | ? | |
| Naohidea sebacea | Pathogen | ? | |
| Naohidemyces vacciniorum (as Pucciniastrum vaccinii) | Pucciniales | Occasional | |
| Naucoria escharioides | Ochre Aldercap | Pucciniales | Occasional |
| Naucoria scolecina | Pucciniales | ? | |
| Naucoria striatula | Striate Aldercap | Pucciniales | ? |
| Nectria candicans | Pucciniales | ? | |
| Nectria cinnabarina | Coral Spot | Pucciniales | Frequent |
| Nectria coccinea | Pucciniales | Rare | |
| Nectria ditissima | Pucciniales | ? | |
| Nectria episphaeria | Pucciniales | ? | |
| Nectria fuckeliana | Pucciniales | Rare | |
| Nectria galligena | Pucciniales | ? | |
| Nectria inventa | Pucciniales | ? | |
| Nectria pallidula | Pucciniales | Rare | |
| Nectria peziza | Pucciniales | ? | |
| Nectriella dacrymycella | Pucciniales | ? | |
| Nectriopsis sporangiicola | Pucciniales | ? | |
| Nectriopsis violacea | Pucciniales | ? | |
| Nemania confluens | Pucciniales | ? | |
| Nemania serpens | Pucciniales | Rare | |
| Nemania serpens var. serpens (as Hypoxylon serpens) | Pucciniales | Rare | |
| Neobulgaria pura | Dacrymycetales | Occasional | |
| Neobulgaria pura var. foliacea | Dacrymycetales | Rare | |
| Neobulgaria pura var. pura | Beech Jellydisc | Dacrymycetales | Occasional |
| Neodasyscypha cerina | Ascomycetes | Rare | |
| Neoerysiphe galeopsidis | Pathogen | ? | |
| Neolentinus lepideus | Scaly Sawgill | Agaricales | ? |
| Neottiella hetieri | Ascomycetes | Rare | |
| Neottiella rutilans | Ascomycetes | Rare | |
| Nidularia deformis | Gasteromycetes | ? | |
| Niptera ramincola | Ascomycetes | Rare | |
| Nitschkia confertula | Ascomycetes | Rare | |
| Nodulosphaeria dolioloides | Ascomycetes | ? | |
| Ochropsora ariae | Ascomycetes | ? | |
| Octospora humosa | Hotlips | Ascomycetes | Rare |
| Octospora leucoloma | Ascomycetes | ? | |
| Oligoporus ptychogaster (anamorph) Postia ptychogaster | Agaricales | Rare | |
| Omphalina pyxidata | Agaricales | Rare | |
| Omphalina subhepatica | Agaricales | ? | |
| Onygena corvina | Ascomycetes | Rare | |
| Ophiobolus acuminatus | Ascomycetes | ? | |
| Ophiocordyceps gracilis (Cordyceps gracilis) | Ascomycetes | Rare | |
| Orbilia alnea | Discomycetes | Rare | |
| Orbilia auricolor (as Hyalinia inflatula) | Discomycetes | Rare | |
| Orbilia coccinella | Discomycetes | ? | |
| Orbilia curvatispora | Discomycetes | ? | |
| Orbilia cyathea | Discomycetes | ? | |
| Orbilia delicatula | Discomycetes | ? | |
| Orbilia leucostigma | Discomycetes | ? | |
| Orbilia luteorubella | Discomycetes | ? | |
| Orbilia sarraziniana | Discomycetes | Rare | |
| Orbilia vinosa | Discomycetes | ? | |
| Orbilia xanthostigma | Common Glasscup | Discomycetes | ? |
| Otidea alutacea | Tan Ear | Ascomycetes | Occasional |
| Otidea apophysata | Ascomycetes | ? | |
| Otidea cochleata | Brown Ear | Ascomycetes | Rare |
| Otidea leporina | Ascomycetes | ? | |
| Otidea onotica | Hare's Ear | Ascomycetes | Occasional |
| Otidea violacea | Ascomycetes | ? | |
| Oudemansiella mucida | Porcelain Fungus | Agaricales | Common |
| Oxyporus obducens | Resupinate | ? | |
| Oxyporus populinus (as Fomes connatus) | Polyporales | Rare | |
| Pachyella babingtonii | Ascomycetes | ? | |
| Pachyella violaceonigra | Midnight Disco | Ascomycetes | ? |
| Paecilomyces farinosus | Ascomycetes | Rare | |
| Panaeolina foenisecii | Brown Mottlegill | Agaricales | Common |
| Panaeolus acuminatus (as Panaeolus rickenii) | Dewdrop Mottlegill | Agaricales | Occasional |
| Panaeolus cinctulus | Banded Mottlegill | Agaricales | ? |
| Panaeolus fimicola | Turf Mottlegill | Agaricales | Common |
| Panaeolus papilionaceus | Agaricales | Rare | |
| Panaeolus papilionaceus var. papilionaceus | Petticoat Mottlegill | Agaricales | ? |
| Panaeolus semiovatus | Agaricales | Frequent | |
| Panaeolus semiovatus var. semiovatus | Egghead Mottlegill | Agaricales | Frequent |
| Panellus mitis | Elastic Oysterling | Agaricales | Occasional |
| Panellus stipticus | Bitter Oysterling | Agaricales | Common |
| Panus conchatus | Lilac Oysterling | Agaricales | Rare |
| Parasola auricoma (as Coprinus auricomus) | Agaricales | Rare | |
| Parasola conopilus (as Psathyrella conopilus) | Conical Brittlestem | Agaricales | Rare |
| Parasola hemerobia | Agaricales | ? | |
| Parasola leiocephala | Agaricales | ? | |
| Parasola misera (as Coprinus miser) | Agaricales | ? | |
| Parasola nudiceps | Agaricales | ? | |
| Parasola plicatilis (as Coprinus plicatilis) | Pleated Inkcap | Agaricales | Common |
| Parasola schroeteri | Agaricales | Rare | |
| Paullicorticium pearsonii | Resupinate | ? | |
| Paxillus atrotomentosus | Agaricales | Occasional | |
| Paxillus involutus | Brown Rollrim | Agaricales | Frequent |
| Paxillus rubicundulus | Agaricales | Rare | |
| Pellidiscus pallidus | Ascomycetes | ? | |
| Penicillium aurantiogriseum | Pathogen | ? | |
| Penicillium brevicompactum | Pathogen | ? | |
| Penicillium claviforme | Pathogen | ? | |
| Penicillium expansum | Pathogen | ? | |
| Penicillium italicum | Pathogen | ? | |
| Peniophora cinerea | Resupinate | Common | |
| Peniophora erikssonii | Resupinate | Rare | |
| Peniophora incarnata | Rosy Crust | Resupinate | ? |
| Peniophora limitata | Resupinate | ? | |
| Peniophora lycii | Resupinate | Occasional | |
| Peniophora nuda | Resupinate | ? | |
| Peniophora polygonia | Resupinate | ? | |
| Peniophora quercina | Resupinate | Common | |
| Perenniporia medulla-panis | Resupinate | Rare | |
| Periconia byssoides | Ascomycetes | ? | |
| Pezicula cinnamomea | Discomycetes | ? | |
| Pezicula livida | Discomycetes | ? | |
| Pezicula rubi | Discomycetes | ? | |
| Peziza ampliata | Ascomycetes | ? | |
| Peziza badia | Bay Cup | Ascomycetes | Common |
| Peziza badioconfusa | Ascomycetes | ? | |
| Peziza cerea | Cellar Cup | Ascomycetes | Rare |
| Peziza echinospora | Charcoal Cup | Ascomycetes | Rare |
| Peziza limnaea | Ascomycetes | ? | |
| Peziza michelii | Ascomycetes | ? | |
| Peziza micropus | Ascomycetes | Occasional | |
| Peziza petersii | Ascomycetes | Rare | |
| Peziza praetervisa | Ascomycetes | Rare | |
| Peziza recedens | Ascomycetes | Rare | |
| Peziza repanda | Palamino Cup | Ascomycetes | Rare |
| Peziza saniosa | Ascomycetes | ? | |
| Peziza sepiatra (as Aleuria sepiatra) | Ascomycetes | ? | |
| Peziza succosa | Yellowing Cup | Ascomycetes | Rare |
| Peziza varia | Layered Cup | Ascomycetes | Rare |
| Peziza vesiculosa | Blistered Cup | Ascomycetes | Occasional |
| Peziza violacea | Ascomycetes | ? | |
| Pezizella albosanguinea | Ascomycetes | ? | |
| Pezizella alniella | Ascomycetes | ? | |
| Pezizella chionea | Ascomycetes | ? | |
| Pezizella discreta | Ascomycetes | ? | |
| Pezizella eburnea | Ascomycetes | ? | |
| Pezizella gemmarum | Ascomycetes | ? | |
| Pezizella incerta (as Helotium incertum) | Ascomycetes | ? | |
| Pezizella nigrocorticata | Ascomycetes | ? | |
| Pezizella roburnea | Ascomycetes | ? | |
| Pezizella rubescens | Ascomycetes | ? | |
| Pezizella subtilis | Ascomycetes | ? | |
| Phacidium multivalve | Discomycetes | Occasional | |
| Phaeangella ventosa (as Mollisia ventosa) | Ascomycetes | Rare | |
| Phaeocollybia festiva | Agaricales | Rare | |
| Phaeocryptopus gaeumannii | Ascomycetes | Rare | |
| Phaeohelotium extumescens | Discomycetes | ? | |
| Phaeohelotium monticola | Discomycetes | ? | |
| Phaeohelotium nobile | Ascomycetes | Rare | |
| Phaeohelotium umbilicatum | Discomycetes | ? | |
| Phaeolus schweinitzii | Dyer's Mazegill | Polyporales | Occasional |
| Phaeomarasmius erinaceus | Agaricales | Rare | |
| Phaeosphaeria caricicola | Ascomycetes | Rare | |
| Phaeosphaeria epicalamia | Pathogen | ? | |
| Phaeosphaeria eustoma | Pathogen | ? | |
| Phaeosphaeria fuckelii | Pathogen | ? | |
| Phaeostalagmus cyclosporus | Pathogen | ? | |
| Phallus impudicus | Stinkhorn | Gasteromycetes | Abundant |
| Phallus impudicus var. impudicus | Stinkhorn | Gasteromycetes | Abundant |
| Phanerochaete sanguinea | Resupinate | ? | |
| Phanerochaete sordida | Resupinate | ? | |
| Phanerochaete tuberculata | Resupinate | ? | |
| Phanerochaete velutina nom. inval. | Resupinate | Rare | |
| Phellinus igniarius | Willow Bracket | Polyporales | Common |
| Phellinus nigricans | Polyporales | ? | |
| Phellinus nigrolimitatus | Polyporales | ? | |
| Phellinus pomaceus | Cushion Bracket | Polyporales | Common |
| Phialina flaveola | Ascomycetes | ? | |
| Phialina lachnobrachya | Ascomycetes | ? | |
| Phialina pseudopuberula | Ascomycetes | ? | |
| Phialina separabilis | Ascomycetes | ? | |
| Phlebia radiata | Wrinkled Crust | Polyporales | Occasional |
| Phlebia rufa | Polyporales | Rare | |
| Phlebia tremellosa | Jelly Rot | Polyporales | Common |
| Phlebiella sulphurea | Yellow Cobweb | Resupinate | Occasional |
| Phlebiella sulphurea | Polyporales | Occasional | |
| Phlebiopsis gigantea | Resupinate | ? | |
| Pholiota alnicola | Agaricales | Occasional | |
| Pholiota alnicola var. alnicola | Alder Scalycap | Agaricales | ? |
| Pholiota conissans | Agaricales | ? | |
| Pholiota flammans | Flaming Scalycap | Agaricales | Rare |
| Pholiota gummosa | Sticky Scalycap | Agaricales | Common |
| Pholiota highlandensis | Bonfire Scalycap | Agaricales | Common |
| Pholiota lenta | Agaricales | Rare | |
| Pholiota scamba | Agaricales | ? | |
| Pholiota squarrosa | Shaggy Scalycap | Agaricales | Rare |
| Pholiota tuberculosa | Agaricales | Occasional | |
| Phoma hedericola | Ascomycetes | ? | |
| Phomatospora berkeleyi | Ascomycetes | Rare | |
| Phragmidium bulbosum | Pucciniales | ? | |
| Phragmidium fragariae | Pucciniales | ? | |
| Phragmidium mucronatum | Pucciniales | ? | |
| Phragmidium tuberculatum | Pucciniales | ? | |
| Phragmidium violaceum | Violet Bramble Rust | Pucciniales | ? |
| Phyllachora graminis | Pucciniales | ? | |
| Phyllachora graminis var. graminis | Pucciniales | ? | |
| Phyllachora junci | Pucciniales | ? | |
| Phyllactinia guttata | Pucciniales | ? | |
| Phyllactinia mali | Pucciniales | Rare | |
| Physisporinus vitreus | Pucciniales | ? | |
| Pilaira anomala | Pucciniales | ? | |
| Pilobolus crystallinus | Pucciniales | ? | |
| Pilobolus crystallinus var. kleinii | Pucciniales | ? | |
| Piloderma bicolor | Resupinate | ? | |
| Piloderma byssinum | Resupinate | ? | |
| Piptoporus betulinus | Birch Polyporales | Polyporales | Abundant |
| Piptoporus quercinus | Oak Polypore | Polyporales | Possibly, but no verified record? |
| Pithya cupressina | Vulnerable | Ascomycetes | Rare |
| Plagiostoma alneum | Ascomycetes | ? | |
| Plagiostoma inclinatum | Ascomycetes | ? | |
| Platychora ulmi | Ascomycetes | ? | |
| Plectania melastoma | Ascomycetes | Rare | |
| Pleospora herbarum | Pathogen | ? | |
| Pleurotellus dictyorhizus | Agaricales | ? | |
| Pleurotus cornucopiae | Branching Oyster | Agaricales | Occasional |
| Pleurotus dryinus | Veiled Oyster | Agaricales | Occasional |
| Pleurotus ostreatus | Oyster Mushroom | Agaricales | Common |
| Pleurotus pulmonarius | Pale Oyster | Agaricales | Occasional |
| Plicaria endocarpoides | Ascomycetes | ? | |
| Plicaria trachycarpa | Ascomycetes | ? | |
| Ploettnera exigua | Ascomycetes | ? | |
| Pluteus cervinus | Deer Shield | Agaricales | Abundant |
| Pluteus chrysophaeus (as Pluteus luteovirens) | Yellow Shield | Agaricales | Rare |
| Pluteus cinereofuscus (P. luteovirens) | Agaricales | ? | |
| Pluteus ephebeus | Agaricales | Rare | |
| Pluteus hispidulus | Agaricales | ? | |
| Pluteus leoninus | Lion Shield | Agaricales | Occasional |
| Pluteus luctuosus | Agaricales | Rare | |
| Pluteus nanus | Dwarf Shield | Agaricales | ? |
| Pluteus phlebophorus | Wrinkled Shield | Agaricales | Rare |
| Pluteus plautus | Satin Shield | Agaricales | ? |
| Pluteus podospileus | Agaricales | Rare | |
| Pluteus romellii | Goldleaf Shield | Agaricales | Rare |
| Pluteus salicinus | Willow Shield | Agaricales | Occasional |
| Pluteus thomsonii | Veined Shield | Agaricales | ? |
| Pluteus umbrosus | Velvet Shield | Agaricales | Rare |
| Podosphaera aphanis | Ascomycetes | ? | |
| Podosphaera clandestina var. clandestina | Ascomycetes | ? | |
| Podosphaera fugax | Ascomycetes | ? | |
| Podosphaera fusca | Ascomycetes | ? | |
| Podosphaera leucotricha | Ascomycetes | ? | |
| Podosphaera macularis | Ascomycetes | ? | |
| Podosphaera myrtillina | Ascomycetes | ? | |
| Podosphaera pannosa | Ascomycetes | ? | |
| Podosphaera tridactyla | Ascomycetes | Rare | |
| Podospora conica | Ascomycetes | ? | |
| Podospora leporina | Ascomycetes | Rare | |
| Podospora perplexans | Ascomycetes | Rare | |
| Polydesmia fructicola | Ascomycetes | Rare | |
| Polydesmia pruinosa | Ascomycetes | ? | |
| Polyporus brumalis | Winter Polyporales | Polyporales | Common |
| Polyporus ciliatus | Fringed Polyporales | Polyporales | Occasional |
| Polyporus durus (as Polyporus badius) | Bay Polyporales | Polyporales | Rare |
| Polyporus leptocephalus (as Polyporus varius) | Blackfoot Polyporales | Polyporales | Occasional |
| Polyporus melanopus | Polyporales | Rare | |
| Polyporus squamosus | Dryad's Saddle | Polyporales | Common |
| Polyporus tuberaster | Tuberous Polyporales | Polyporales | Occasional |
| Polystigma rubrum | Ascomycetes | ? | |
| Porotheleum fimbriatum | Resupinate | ? | |
| Porphyrellus porphyrosporus | Dusky Bolete | Boletales | Occasional |
| Postia caesia | Conifer Blueing Bracket | Polyporales | Common |
| Postia fragilis | Polyporales | Rare | |
| Postia hibernica | Polyporales | ? | |
| Postia leucomallella | Polyporales | ? | |
| Postia placenta | Polyporales | ? | |
| Postia ptychogaster | Polyporales | Rare | |
| Postia sericeomollis | Polyporales | ? | |
| Postia stiptica (as Tyromyces stipticus) | Bitter Bracket | Polyporales | Common |
| Postia subcaesia | Blueing Bracket | Polyporales | Common |
| Postia tephroleuca | Greyling Bracket | Polyporales | ? |
| Proliferodiscus pulveraceus | Ascomycetes | ? | |
| Propolis farinosa | Ascomycetes | ? | |
| Protomyces macrosporus | Ascomycetes | ? | |
| Protomyces pachydermus | Ascomycetes | ? | |
| Psathyrella artemisiae | Agaricales | ? | |
| Psathyrella artemisiae var. artemisiae | Petticoat Brittlestem | Agaricales | ? |
| Psathyrella atomata | Agaricales | ? | |
| Psathyrella bifrons | Agaricales | Rare | |
| Psathyrella candolleana | Pale Brittlestem | Agaricales | Frequent |
| Psathyrella canoceps | Agaricales | ? | |
| Psathyrella corrugis (P. gracilis) | Red Edge Brittlestem | Agaricales | Rare |
| Psathyrella cotonea | Yellowfoot Brittlestem | Agaricales | ? |
| Psathyrella dicrani | Agaricales | ? | |
| Psathyrella friesii | Agaricales | ? | |
| Psathyrella fusca | Agaricales | Rare | |
| Psathyrella gossypina | Agaricales | Rare | |
| Psathyrella impexa | Agaricales | ? | |
| Psathyrella leucotephra | Agaricales | ? | |
| Psathyrella marcescibilis | Agaricales | Occasional | |
| Psathyrella microrhiza | Rootlet Brittlestem | Agaricales | ? |
| Psathyrella multipedata | Clustered Brittlestem | Agaricales | Rare |
| Psathyrella obtusata var. obtusata | Agaricales | Rare | |
| Psathyrella pennata | Agaricales | Occasional | |
| Psathyrella piluliformis | Common Stump Brittlestem | Agaricales | Common |
| Psathyrella potteri | Agaricales | ? | |
| Psathyrella prona | Agaricales | ? | |
| Psathyrella sarcocephala | Agaricales | ? | |
| Psathyrella spadicea | Chestnut Brittlestem | Agaricales | Occasional |
| Psathyrella spadiceogrisea | Spring Brittlestem | Agaricales | Rare |
| Psathyrella squamosa | Agaricales | Rare | |
| Psathyrella tephrophylla | Agaricales | Rare | |
| Psathyrella trepida | Agaricales | ? | |
| Pseudoboletus parasiticus | Parasitic Bolete | Agaricales | ? |
| Pseudoclitocybe cyathiformis | Goblet | Agaricales | Frequent |
| Pseudocraterellus undulatus | Sinuous Chanterelle | Agaricales | Rare |
| Pseudohelotium alaunae | Ascomycetes | ? | |
| Pseudohelotium cf. haematoideum | Ascomycetes | Rare | |
| Pseudohydnum gelatinosum | Jelly Tooth | Dacrymycetales | Occasional |
| Pseudoinonotus dryadeus (as Inonotus dryadeus) | Oak Bracket | Polyporales | Occasional |
| Pseudombrophila hepatica (as Fimaria hepatica) | Ascomycetes | Rare | |
| Pseudopeziza trifolii | Ascomycetes | ? | |
| Pseudotrichia minor | Ascomycetes | ? | |
| Psilachnum chrysostigma | Ascomycetes | Rare | |
| Psilachnum chrysostigmum | Ascomycetes | ? | |
| Psilachnum tami | Ascomycetes | ? | |
| Psilocybe callosa | Agaricales | ? | |
| Psilocybe coprophila | Agaricales | Common | |
| Psilocybe crobula | Agaricales | Rare | |
| Psilocybe inquilina | Agaricales | ? | |
| Psilocybe merdaria | Agaricales | ? | |
| Psilocybe semilanceata | Liberty Cap | Agaricales | Occasional |
| Psilocybe strictipes | Agaricales | ? | |
| Psilolechia lucida | Ascomycetes | Rare | |
| Pterula gracilis | Agaricales | Rare | |
| Puccinia acetosae | Agaricales | ? | |
| Puccinia aegopodii | Pucciniales | Occasional | |
| Puccinia allii | Pucciniales | ? | |
| Puccinia annularis | Pucciniales | ? | |
| Puccinia arenariae | Pucciniales | Rare | |
| Puccinia betonicae | Pucciniales | Common | |
| Puccinia brachypodii var. arrhenatheri | Pucciniales | ? | |
| Puccinia calcitrapae | Pucciniales | ? | |
| Puccinia calthae | Pucciniales | Occasional | |
| Puccinia caricina var. caricina | Nettle Clustercup Rust | Pucciniales | Occasional |
| Puccinia caricina var. ribesii-pendulae | Pucciniales | ? | |
| Puccinia circaeae | Pucciniales | Rare | |
| Puccinia cnici | Pucciniales | ? | |
| Puccinia cnici-oleracei (as Puccinia cardui) | Pucciniales | Rare | |
| Puccinia coronata | Pucciniales | ? | |
| Puccinia distincta | Pucciniales | ? | |
| Puccinia epilobii | Pucciniales | Rare | |
| Puccinia glechomatis | Pucciniales | Occasional | |
| Puccinia graminis subsp. graminicola | Pucciniales | Occasional | |
| Puccinia graminis subsp. graminis | Pucciniales | ? | |
| Puccinia hieracii | Pucciniales | ? | |
| Puccinia hieracii var. hieracii | Pucciniales | ? | |
| Puccinia hordei | Pucciniales | ? | |
| Puccinia lagenophorae | Pucciniales | ? | |
| Puccinia lapsanae | Pucciniales | ? | |
| Puccinia malvacearum | Pucciniales | Occasional | |
| Puccinia menthae | Pucciniales | Occasional | |
| Puccinia obscura | Pucciniales | ? | |
| Puccinia oxalidis | Pucciniales | Occasional | |
| Puccinia poarum | Pucciniales | ? | |
| Puccinia primulae | Pucciniales | Occasional | |
| Puccinia pulverulenta | Pucciniales | ? | |
| Puccinia punctiformis | Pucciniales | ? | |
| Puccinia recondita | Pucciniales | ? | |
| Puccinia sessilis | Pucciniales | ? | |
| Puccinia striiformis var. striiformis | Pucciniales | ? | |
| Puccinia tumida | Pucciniales | ? | |
| Puccinia urticata | Pucciniales | Occasional | |
| Puccinia variabilis | Pucciniales | ? | |
| Puccinia veronicae | Pucciniales | Occasional | |
| Puccinia vincae | Pucciniales | Rare | |
| Puccinia violae | Pucciniales | Occasional | |
| Pucciniastrum agrimoniae | Pucciniales | ? | |
| Pucciniastrum circaeae | Pucciniales | ? | |
| Pucciniastrum epilobii | Pucciniales | ? | |
| Pulvinula cinnabarina | Pucciniales | ? | |
| Pulvinula convexella | Pucciniales | ? | |
| Pycnostysanus azaleae | Pucciniales | ? | |
| Pyrenopeziza carduorum | Pucciniales | Rare | |
| Pyrenopeziza digitalina | Pucciniales | ? | |
| Pyrenopeziza escharodes | Pucciniales | ? | |
| Pyrenopeziza lychnidis | Pucciniales | ? | |
| Pyrenopeziza maculans | Pucciniales | ? | |
| Pyrenopeziza mercurialis | Pucciniales | ? | |
| Pyrenopeziza pastinacae | Pucciniales | ? | |
| Pyrenopeziza polygoni | Discomycetes | ? | |
| Pyrenopeziza pulveracea | Discomycetes | Rare | |
| Pyrenopeziza revincta | Discomycetes | ? | |
| Pyrenopeziza urticicola | Discomycetes | ? | |
| Pyrenula nitida | Ascomycetes | Rare | |
| Pyronema domesticum | Ascomycetes | ? | |
| Pyronema glaucum | Ascomycetes | ? | |
| Pyronema omphalodes (as Pyronema confluens) | Ascomycetes | ? | |
| Pyxidiophora asterophora | Ascomycetes | ? | |
| Quaternaria quaternata | Ascomycetes | ? | |
| Radulomyces confluens | Resupinate | Occasional | |
| Radulomyces molaris | Resupinate | Common | |
| Ramaria abietina (as Ramaria ochraceovirens) | Aphyllophorales | Rare | |
| Ramaria aurea | Aphyllophorales | ? | |
| Ramaria botrytis | Rosso Coral | Aphyllophorales | ? |
| Ramaria fennica | Aphyllophorales | ? | |
| Ramaria flaccida | Aphyllophorales | ? | |
| Ramaria formosa | Aphyllophorales | Rare | |
| Ramaria gracilis | Aphyllophorales | Rare | |
| Ramaria stricta | Upright Coral | Aphyllophorales | Rare |
| Ramariopsis kunzei | Ivory Coral | Aphyllophorales | Rare |
| Ramsbottomia asperior | Ascomycetes | ? | |
| Ramularia ari | Discomycetes | ? | |
| Ramularia calcea | Discomycetes | ? | |
| Ramularia didyma | Discomycetes | ? | |
| Ramularia glechomatis | Discomycetes | ? | |
| Ramularia kriegeriana | Discomycetes | ? | |
| Ramularia lactea | Discomycetes | ? | |
| Ramularia lapsanae | Discomycetes | ? | |
| Ramularia montana | Discomycetes | ? | |
| Ramularia primulae | Discomycetes | ? | |
| Ramularia rubella | Discomycetes | ? | |
| Ramularia superflua | Discomycetes | ? | |
| Ramularia variabilis | Discomycetes | ? | |
| Resinicium bicolor | Resupinate | ? | |
| Resinomycena saccharifera (as Mycena pudica) | Agaricales | ? | |
| Resupinatus applicatus | Smoked Oysterling | Agaricales | ? |
| Rhizina undulata | Pine Firefungus | Ascomycetes | Rare |
| Rhizodiscina lignyota | Ascomycetes | Rare | |
| Rhizopogon luteolus | Yellow False Truffle | Gasteromycetes | Rare |
| Rhizopogon roseolus | Gasteromycetes | ? | |
| Rhizopus stolonifer var. stolonifer | Pathogen | ? | |
| Rhodocollybia butyracea (as Collybia butyracea var. asema) | Agaricales | Abundant | |
| Rhodocollybia maculata | Spotted Toughshank | Agaricales | Common |
| Rhodocollybia maculata var. maculata | Agaricales | Common | |
| Rhodotarzetta rosea | Ascomycetes | ? | |
| Rhodotus palmatus | Wrinkled Peach | Agaricales | Rare |
| Rhopographus filicinus | Bracken Map | Ascomycetes | Frequent |
| Rhytisma acerinum | Sycamore Tarspot | Ascomycetes | Abundant |
| Rhytisma punctatum | Ascomycetes | ? | |
| Rhytisma salicinum | Ascomycetes | ? | |
| Rickenella fibula | Orange Mosscap | Agaricales | Common |
| Rickenella setipes | Agaricales | Rare | |
| Rickenella swartzii | Collared Mosscap | Agaricales | Occasional |
| Rigidoporus sanguinolentus | Bleeding Porecrust | Polyporales | Rare |
| Rigidoporus ulmarius | Polyporales | Rare | |
| Rimbachia neckerae | Agaricales | ? | |
| Ripartites tricholoma | Bearded Seamine | Agaricales | Rare |
| Rodwayella citrinula | Ascomycetes | ? | |
| Rosellinia aquila | Discomycetes | Rare | |
| Rosellinia mammiformis | Discomycetes | ? | |
| Rosenscheldia abundans | Ascomycetes | ? | |
| Rugosomyces carneus (as Calocybe carnea) | Pink Domecap | Agaricales | Rare |
| Russula adusta | Winecork Brittlegill | Agaricales | Rare |
| Russula aeruginea | Green Brittlegill | Agaricales | Common |
| Russula albonigra | Agaricales | Rare | |
| Russula alutacea | Agaricales | ? | |
| Russula amoena | Agaricales | ? | |
| Russula amoenolens | Agaricales | Common | |
| Russula aquosa | Agaricales | Rare | |
| Russula atropurpurea non Peck (1888) | Purple Brittlegill | Agaricales | Frequent |
| Russula aurea (as Russula aurata) | Gilded Brittlegill | Agaricales | Rare |
| Russula aurora | Dawn Brittlegill | Agaricales | Rare |
| Russula azurea | Agaricales | Rare | |
| Russula betularum | Birch Brittlegill | Agaricales | Occasional |
| Russula brunneoviolacea | Agaricales | Occasional | |
| Russula caerulea | Humpback Brittlegill | Agaricales | Rare |
| Russula chloroides | Blue Band Brittlegill | Agaricales | ? |
| Russula claroflava | Yellow Swamp Brittlegill | Agaricales | Rare |
| Russula cyanoxantha | Charcoal Burner | Agaricales | Frequent |
| Russula cyanoxantha var. peltereaui | Agaricales | Occasional | |
| Russula delica | Milk White Brittlegill | Agaricales | Occasional |
| Russula densifolia | Crowded Brittlegill | Agaricales | Common |
| Russula emetica | Sickener | Agaricales | Occasional |
| Russula farinipes | Agaricales | Occasional | |
| Russula fellea | Geranium Brittlegill | Agaricales | Occasional |
| Russula foetens | Stinking Brittlegill | Agaricales | Common |
| Russula fragilis | Agaricales | Common | |
| Russula fragilis var. fragilis | Fragile Brittlegill | Agaricales | Common |
| Russula fuscorubroides? | Agaricales | ? | |
| Russula grata | Bitter Almond Brittlegill | Agaricales | Rare |
| Russula grisea | Agaricales | Rare | |
| Russula heterophylla | Greasy Green Brittlegill | Agaricales | Common |
| Russula integra | Agaricales | ? | |
| Russula lilacea | Agaricales | ? | |
| Russula lutea | Agaricales | ? | |
| Russula luteotacta | Agaricales | ? | |
| Russula maculata (globispora). | Agaricales | Rare | |
| Russula mustelina | Russet Brittlegill | Agaricales | ? |
| Russula nigricans | Blackening Brittlegill | Agaricales | Abundant |
| Russula nitida | Purple Swamp Brittlegill | Agaricales | Rare |
| Russula nobilis (as Russula mairei) | Beechwood Sickener | Agaricales | Occasional |
| Russula ochroleuca | Ochre Brittlegill | Agaricales | Abundant |
| Russula olivacea | Olive Brittlegill | Agaricales | Rare |
| Russula parazurea | Powdery Brittlegill | Agaricales | Occasional |
| Russula pectinata | Agaricales | Rare | |
| Russula pelargonia | Agaricales | Rare | |
| Russula pseudointegra | Scarlet Brittlegill | Agaricales | Common |
| Russula puellaris | Yellowing Brittlegill | Agaricales | Rare |
| Russula queletii | Fruity Brittlegill | Agaricales | Occasional |
| Russula raoultii | Agaricales | Occasional | |
| Russula romellii | Agaricales | ? | |
| Russula rosea (as Russula lepida) | Rosy Brittlegill | Agaricales | Occasional |
| Russula sanguinaria | Bloody Brittlegill | Agaricales | Occasional |
| Russula sardonia | Primrose Brittlegill | Agaricales | Occasional |
| Russula silvestris (as Russula emeticella) | Agaricales | Common | |
| Russula sororia | Sepia Brittlegill | Agaricales | Rare |
| Russula velenovskyi | Coral Brittlegill | Agaricales | Occasional |
| Russula versicolor | Variable Brittlegill | Agaricales | Occasional |
| Russula vesca | The Flirt | Agaricales | Common |
| Russula veternosa | Agaricales | Rare | |
| Russula violacea | Agaricales | ? | |
| Russula violeipes | Velvet Brittlegill | Agaricales | Rare |
| Russula virescens | Greencracked Brittlegill | Agaricales | Occasional |
| Russula xerampelina | Crab Brittlegill | Agaricales | Common |
| Rutstroemia conformata | Ascomycetes | ? | |
| Rutstroemia firma | Brown Cup | Ascomycetes | Frequent |
| Rutstroemia fruticeti | Ascomycetes | Rare | |
| Rutstroemia hercynica | Ascomycetes | ? | |
| Rutstroemia petiolorum | Ascomycetes | ? | |
| Rutstroemia sydowiana | Oakleaf Cup | Ascomycetes | ? |
| Saccobolus citrinus | Ascomycetes | ? | |
| Saccobolus versicolor | Ascomycetes | ? | |
| Sarcomyxa serotina (as Panellus serotinus) | Olive Oysterling | Agaricales | Common |
| Sarcopyrenia gibba var. geisleri | Ascomycetes | ? | |
| Sarcoscypha austriaca | Scarlet Elfcup | Ascomycetes | Occasional |
| Sarcoscypha coccinea | Ascomycetes | Rare | |
| Sarcosphaera coronaria | Violet Crowncup | Ascomycetes | Possibly an Error |
| Sarea resinae | Discomycetes | ? | |
| Sawadaea bicornis | Discomycetes | ? | |
| Schizophyllum commune | Common Porecrust | Agaricales | Rare |
| Schizopora paradoxa | Split Porecrust | Agaricales | Rare |
| Schizothecium vesticola | Discomycetes | ? | |
| Scleroderma areolatum | Leopard Earthball | Gasteromycetes | Rare |
| Scleroderma bovista | Potato Earthball | Gasteromycetes | ? |
| Scleroderma cepa | Gasteromycetes | ? | |
| Scleroderma citrinum | Common Earthball | Gasteromycetes | Common |
| Scleroderma verrucosum | Scaly Earthball | Gasteromycetes | Occasional |
| Sclerotinia sclerotiorum | Discomycetes | ? | |
| Sclerotium cepivorum | Discomycetes | ? | |
| Scopuloides hydnoides (as Peniophora hydnoides) | Pathogen | ? | |
| Scopuloides rimosa | Pathogen | ? | |
| Scutellinia armatospora | Discomycetes | ? | |
| Scutellinia cejpii | Discomycetes | ? | |
| Scutellinia crinita | Discomycetes | ? | |
| Scutellinia kerguelensis | Discomycetes | ? | |
| Scutellinia scutellata | Common Eyelash | Discomycetes | Common |
| Scutellinia trechispora | Discomycetes | Rare | |
| Scutellinia umbrorum | Discomycetes | Occasional | |
| Scutoscypha fagi | Discomycetes | ? | |
| Sebacina incrustans | Enveloping Crust | Resupinate | Rare |
| Serpula himantioides | Resupinate | Rare | |
| Serpula lacrymans | Dry Rot | Resupinate | Occasional |
| Sesquicillium microsporum | Discomycetes | ? | |
| Sillia ferruginea | Ascomycetes | Occasional | |
| Simocybe centunculus var. centunculus | Dingy Twiglet | Agaricales | Rare |
| Simocybe haustellaris | Agaricales | ? | |
| Sistotrema brinkmannii | Resupinate | ? | |
| Skeletocutis amorpha | Resupinate | Occasional | |
| Skeletocutis carneogrisea | Resupinate | ? | |
| Skeletocutis nivea | Hazel Bracket | Resupinate | Rare |
| Sordaria fimicola | Discomycetes | ? | |
| Sordaria humana | Discomycetes | ? | |
| Sparassis crispa | Wood Cauliflower | Ascomycetes | Rare |
| Spathularia flavida | Yellow Fan | Ascomycetes | Rare |
| Sphacelotheca hydropiperis | Pathogen | ? | |
| Sphaerobolus stellatus | Shooting Star | Ascomycetes | Rare |
| Sphaeronaemella fimicola | Discomycetes | ? | |
| Sphaerosporella brunnea | Discomycetes | ? | |
| Sphaerotheca epilobii | Discomycetes | ? | |
| Spilopodia melanogramma | Discomycetes | ? | |
| Spilopodia ranunculi | Ascomycetes | Rare | |
| Spinellus fusiger | Bonnet Mould | Pathogen | Rare |
| Splanchnonema pupula | Discomycetes | ? | |
| Sporormiella intermedia | Ascomycetes | ||
| Squamanita paradoxa | Powdercap Strangler | Agaricales | Rare |
| Steccherinum fimbriatum (as Odontia fimbriata) | Polyporales | ? | |
| Steccherinum ochraceum (as Hydnum ochraceum) | Polyporales | ? | |
| Stereum gausapatum | Bleeding Oak Crust | Polyporales | Common |
| Stereum hirsutum | Hairy Curtain Crust | Polyporales | Abundant |
| Stereum rameale | Polyporales | Rare | |
| Stereum rugosum | Bleeding Broadleaf Crust | Polyporales | Frequent |
| Stereum sanguinolentum | Bleeding Conifer Crust | Polyporales | Occasional |
| Stereum subtomentosum | Yellowing Curtain Crust | Polyporales | Rare |
| Stictis stellata | Ascomycetes | ? | |
| Strattonia carbonaria | Ascomycetes | ? | |
| Strobilomyces strobilaceus | Old Man of the Woods | Agaricales | Rare |
| Strobilurus esculentus | Sprucecone Cap | Agaricales | Occasional |
| Strobilurus stephanocystis | Agaricales | ? | |
| Strobilurus tenacellus | Pinecone Cap | Agaricales | Rare |
| Stropharia aeruginosa | Agaricales | Common | |
| Stropharia aurantiaca | Redlead Roundhead | Agaricales | Occasional |
| Stropharia caerulea | Blue Roundhead | Agaricales | Occasional |
| Stropharia coronilla | Garland Roundhead | Agaricales | Occasional |
| Stropharia cyanea | Agaricales | Common | |
| Stropharia inuncta | Smoky Roundhead | Agaricales | Rare |
| Stropharia melanosperma | Agaricales | ? | |
| Stropharia pseudocyanea | Peppery Roundhead | Agaricales | Rare |
| Stropharia semiglobata | Dung Roundhead | Agaricales | Frequent |
| Stropharia squamosa var. squamosa | Agaricales | ? | |
| Stypella dubia | Resupinate | ? | |
| Stypella vermiformis | Resupinate | ? | |
| Suillus bovinus | Bovine Bolete | Boletales | Common |
| Suillus granulatus | Weeping Bolete | Boletales | Occasional |
| Suillus grevillei | Larch Bolete | Boletales | Abundant |
| Suillus grevillei var. clintonianus | Larch Bolete | Boletales | Occasional |
| Suillus luteus | Slippery Jack | Boletales | Common |
| Suillus variegatus | Velvet Bolete | Boletales | Rare |
| Suillus viscidus | Sticky Bolete | Boletales | Occasional |
| Sydowiella fenestrans | Ascomycetes | ? | |
| Syzygospora pallida | Pathogen | ? | |
| Syzygospora tumefaciens | Pathogen | ? | |
| Tapesia fusca | Ascomycetes | ? | |
| Tapesia lividofusca | Ascomycetes | ? | |
| Tapesia pyrenopezizoides | Ascomycetes | Rare | |
| Tapesia rosae | Ascomycetes | ? | |
| Tapesia rosae var. prunicola | Ascomycetes | ? | |
| Tapesia strobilicola | Ascomycetes | Rare | |
| Tapesia yallundae | Ascomycetes | ? | |
| Taphrina alni | Alder Tongue | Ascomycetes | Rare |
| Taphrina betulae | Ascomycetes | Occasional | |
| Taphrina caerulescens | Ascomycetes | ? | |
| Taphrina populina | Ascomycetes | ? | |
| Taphrina pruni | Pocket Plum | Ascomycetes | Rare |
| Taphrina tosquinetii | Ascomycetes | ? | |
| Taphrina ulmi | Ascomycetes | ? | |
| Tapinella atrotomentosa | Velvet Rollrim | Boletales | ? |
| Tapinella panuoides | Oyster Rollrim | Boletales | Rare |
| Tarzetta catinus | Ascomycetes | Rare | |
| Tarzetta cupularis | Toothed Cup | Ascomycetes | Rare |
| Tephrocybe ambusta | Agaricales | ? | |
| Tephrocybe anthracophila | Agaricales | Occasional | |
| Tephrocybe atrata | Agaricales | Rare | |
| Tephrocybe inolens | Agaricales | ? | |
| Tephrocybe langei | Agaricales | Rare | |
| Tephrocybe palustris | Sphagnum Greyling | Agaricales | Rare |
| Tephrocybe rancida | Rancid Greyling | Agaricales | Rare |
| Tephrocybe striipilea | Agaricales | ? | |
| Terana caerulea | Cobalt Crust | Polyporales | ? |
| Thamnidium elegans | Pathogen | ? | |
| Thanatephorus cucumeris | Pathogen | ? | |
| Thecotheus pelletieri | Ascomycetes | Rare | |
| Thelebolus nanus | Ascomycetes | ? | |
| Thelebolus stercoreus | Ascomycetes | Rare | |
| Thelephora anthocephala | Agaricales | Rare | |
| Thelephora caryophyllea | Agaricales | ? | |
| Thelephora palmata | Stinking Earthfan | Agaricales | Rare |
| Thelephora penicillata (as Thelephora spiculosa) | Agaricales | Rare | |
| Thelephora terrestris | Earthfan | Agaricales | Common |
| Thelephora terrestris forma terrestris | Earthfan | Agaricales | ? |
| Thielaviopsis basicola | Ascomycetes | ? | |
| Tomentella bryophila | Resupinate | ? | |
| Tomentella crinalis | Resupinate | ? | |
| Tomentella ferruginea | Resupinate | ? | |
| Tomentella fuscocinerea | Resupinate | ? | |
| Tomentella sublilacina | Resupinate | ? | |
| Tomentella viridula | Resupinate | ? | |
| Tomentellopsis echinospora | Resupinate | ? | |
| Torrubiella arachnophila | Entomopathogenic | Rare | |
| Torula herbarum | Ascomycetes | ? | |
| Trametes gibbosa | Lumpy Bracket | Polyporales | Common |
| Trametes hirsuta | Hairy Bracket | Polyporales | Abundant |
| Trametes ochracea | Polyporales | Rare | |
| Trametes pubescens | Polyporales | Rare | |
| Trametes suaveolens | Polyporales | Rare | |
| Trametes versicolor | Turkeytail | Polyporales | Frequent |
| Tranzschelia discolor | Pucciniales | ? | |
| Trechispora confinis | Pucciniales | ? | |
| Trechispora farinacea | Pucciniales | ? | |
| Trechispora hymenocystis | Pucciniales | ? | |
| Trechispora mollusca | Pucciniales | ? | |
| Trematosphaeria pertusa | Pucciniales | ? | |
| Tremella candida | Pucciniales | ? | |
| Tremella encephala | Pucciniales | Rare | |
| Tremella exigua | Pucciniales | Occasional | |
| Tremella foliacea | Leafy Brain | Pucciniales | Occasional |
| Tremella globispora | Pucciniales | Rare | |
| Tremella mesenterica | Yellow Brain | Pucciniales | Frequent |
| Trichaptum abietinum | Purplepore Bracket | Pucciniales | Rare |
| Trichodiscus diversipilus | Discomycetes | ? | |
| Trichodiscus virescentulus | Discomycetes | ? | |
| Trichoglossum hirsutum | Ascomycetes | Rare | |
| Trichoglossum hirsutum var. hirsutum | Hairy Earthtongue | Ascomycetes | ? |
| Tricholoma acerbum | Bitter Knight | Agaricales | Rare |
| Tricholoma album | White Knight | Agaricales | ? |
| Tricholoma argyraceum | Agaricales | ? | |
| Tricholoma atrosquamosum | Agaricales | ? | |
| Tricholoma atrosquamosum var. atrosquamosum | Dark Scaled Knight | Agaricales | Rare |
| Tricholoma cingulatum | Girdled Knight | Agaricales | Occasional |
| Tricholoma columbetta | Blue Spot Knight | Agaricales | Occasional |
| Tricholoma equestre | Yellow Knight | Agaricales | ? |
| Tricholoma fulvum | Birch Knight | Agaricales | Common |
| Tricholoma imbricatum | Matt Knight | Agaricales | Rare |
| Tricholoma lascivum | Aromatic Knight | Agaricales | Occasional |
| Tricholoma orirubens | Agaricales | ? | |
| Tricholoma pessundatum | Agaricales | Rare | |
| Tricholoma portentosum | Agaricales | Occasional | |
| Tricholoma saponaceum | Agaricales | Occasional | |
| Tricholoma saponaceum var. saponaceum | Soapy Knight | Agaricales | Occasional |
| Tricholoma saponaceum var. squamosum | Agaricales | ? | |
| Tricholoma scalpturatum | Yellowing Knight | Agaricales | Occasional |
| Tricholoma sciodes | Agaricales | Occasional | |
| Tricholoma sejunctum | Deceiving Knight | Agaricales | Rare |
| Tricholoma stiparophyllum | Agaricales | Rare | |
| Tricholoma sulphureum | Sulphur Knight | Agaricales | Occasional |
| Tricholoma terreum | Grey Knight | Agaricales | Occasional |
| Tricholoma ustale | Burnt Knight | Agaricales | Occasional |
| Tricholoma ustaloides | Agaricales | Occasional | |
| Tricholoma vaccinum | Scaly Knight | Agaricales | ? |
| Tricholoma virgatum | Ashen Knight | Agaricales | ? |
| Tricholomopsis rutilans | Plums and Custard | Agaricales | Common |
| Trichophaea gregaria | Ascomycetes | Rare | |
| Trichophaea hemisphaerioides | Ascomycetes | ? | |
| Trichophaea woolhopeia | Ascomycetes | ? | |
| Trichophaeopsis paludosa | Ascomycetes | ? | |
| Triphragmium ulmariae | Pucciniales | Occasional | |
| Trochila craterium | Pucciniales | ? | |
| Trochila ilicina | Holly Speckle | Pucciniales | Common |
| Trochila laurocerasi | Pucciniales | ? | |
| Tubaria conspersa | Felted Twiglet | Pucciniales | Occasional |
| Tubaria dispersa | Pucciniales | ? | |
| Tubaria furfuracea | Pucciniales | Common | |
| Tubaria furfuracea var. furfuracea | Scurfy Twiglet | Pucciniales | ? |
| Tubaria pellucida | Agaricales | ? | |
| Tuberculina sbrozzii | Pucciniales | ? | |
| Tubeufia cerea | Ascomycetes | Rare | |
| Tubulicrinis glebulosus | Pucciniales | ? | |
| Tulasnella violea | Pucciniales | ? | |
| Tylopilus felleus | Bitter Bolete | Pucciniales | Rare |
| Tympanis conspersa | Pucciniales | ? | |
| Tympanis laricina | Pucciniales | ? | |
| Typhula erythropus | Redleg Club | Pucciniales | Rare |
| Typhula phacorrhiza | Pucciniales | Occasional | |
| Typhula quisquiliaris | Bracken Club | Aphyllophorales | Common |
| Typhula setipes | Aphyllophorales | Rare | |
| Typhula spathulata | Aphyllophorales | Rare | |
| Tyromyces chioneus | Polyporales | Rare | |
| Unguicularia costata | Ascomycetes | Rare | |
| Unguiculella foliicola | Ascomycetes | Rare | |
| Unguiculella hamulata | Ascomycetes | ? | |
| Urocystis anemones | Pucciniales | ? | |
| Urocystis magica | Pucciniales | ? | |
| Urocystis ranunculi | Pucciniales | ? | |
| Urocystis violae | Pucciniales | ? | |
| Uromyces behenis | Pucciniales | ? | |
| Uromyces dactylidis | Celandine Clustercup Rust | Pucciniales | Occasional |
| Uromyces ficariae | Bitter Chocolate Rust | Pucciniales | ? |
| Uromyces geranii | Pucciniales | ? | |
| Uromyces muscari | Pucciniales | ? | |
| Uromyces pisi-sativi | Pucciniales | ? | |
| Uromyces rumicis | Pucciniales | ? | |
| Uromyces valerianae | Pucciniales | ? | |
| Uromyces viciae-fabae | Pucciniales | ? | |
| Uromyces viciae-fabae var. orobi | Pucciniales | ? | |
| Uromyces viciae-fabae var. viciae-fabae | Pucciniales | ? | |
| Ustilago avenae | Pucciniales | ? | |
| Ustilago hypodytes | Pucciniales | ? | |
| Ustilago striiformis | Pucciniales | ? | |
| Ustilago tritici | Pucciniales | ? | |
| Valsa ambiens | Pucciniales | Rare | |
| Valsa ceratophora | Pucciniales | Rare | |
| Valsa ceratosperma | Pucciniales | Rare | |
| Vascellum pratense | Meadow Puffball | Gasteromycetes | Occasional |
| Venturia chlorospora | Discomycetes | Rare | |
| Venturia inaequalis | Discomycetes | ? | |
| Venturia maculiformis | Discomycetes | ? | |
| Venturia potentillae | Discomycetes | ? | |
| Venturia pyrina | Discomycetes | ? | |
| Venturia rumicis | Discomycetes | ? | |
| Verpa conica | Thimble Morel | Ascomycetes | Rare |
| Verticillium catenulatum | Ascomycetes | ? | |
| Verticillium rexianum | Ascomycetes | ? | |
| Vibrissea guernisacii | Ascomycetes | ? | |
| Volvariella bombycina | Silky Rosegill | Agaricales | Occasional |
| Volvariella caesiotincta | Agaricales | ? | |
| Volvariella gloiocephala | Stubble Rosegill | Agaricales | Rare |
| Vuilleminia comedens | Waxy Crust | Polyporales | Common |
| Vuilleminia coryli | Polyporales | Common | |
| Xanthoriicola physciae | Pathogen | ? | |
| Xerocomellus engelii | Boletales | Occasional | |
| Xerocomis (Boletus) ferrugineus | Boletales | Occasional | |
| Xerocomus (Boletus) chrysenteron agg | Red Cracking Bolete | Boletales | Occasional |
| Xerocomus (Boletus) pruinatus | Matt Bolete | Boletales | Occasional |
| Xerocomus (Boletus) subtomentosus | Suede Bolete | Boletales | Frequent |
| Xerocomus cisalpinus | Boletales | Common | |
| Xerula pudens | Agaricales | ? | |
| Xerula radicata | Rooting Shank | Agaricales | Frequent |
| Xylaria carpophila | Beechmast Candlesnuff | Ascomycetes | Occasional |
| Xylaria hypoxylon | Candlesnuff Fungus | Ascomycetes | Abundant |
| Xylaria longipes | Dead Moll's Fingers | Ascomycetes | Common |
| Xylaria polymorpha | Dead Man's Fingers | Ascomycetes | Occasional |
| Zoellneria rosarum | Ascomycetes | ? |