838 species
785 descriptions
9455 photographs
2637 links
- Abortiporus biennis
- Adelphella babingtonii (Description forthcoming)
- Agaricus
- Agaricus albolutescens: Agaricus moronii
- Agaricus arorae
- Agaricus arvensis: Agaricus fissuratus
- Agaricus augustus
- Agaricus benesii
- Agaricus bernardii
- Agaricus bisporus
- Agaricus bitorquis
- Agaricus blazei: Agaricus subrufescens
- Agaricus brunneofibrillosus
- Agaricus californicus
- Agaricus campestris
- Agaricus comtulus
- Agaricus cupreo-brunneus: Agaricus incultorum
- Agaricus deardorffensis
- Agaricus deserticola
- Agaricus diminutivus
- Agaricus fissuratus
- Agaricus fuscofibrillosus: Agaricus brunneofibrillosus
- Agaricus fuscovelatus
- Agaricus hondensis
- Agaricus inapertus
- Agaricus incultorum
- Agaricus lilaceps
- Agaricus micromegathus
- Agaricus meleagris: Agaricus praeclaresquamosus
- Agaricus moronii
- Agaricus pattersonae
- Agaricus perobscurus
- Agaricus praeclaresquamosus: Agaricus deardorffensis
- Agaricus semotus
- Agaricus smithianus
- Agaricus smithii: Agaricus smithianus
- Agaricus stevensii
- Agaricus subrutilescens
- Agaricus subrufescens
- Agaricus sylvicola
- Agaricus xanthodermus
- Agrocybe pediades
- Agrocybe praecox
- Agrocybe putaminum
- Albatrellus caeruleoporus: Neoalbatrellus subcaeruleoporus
- Albatrellus ellisii
- Albatrellus flettii
- Alboleptonia sericella: Entoloma sericellum
- Aleuria aurantia
- Aleuria rhenana: Sowerbyella rhenana
- Aleurodiscus amorphus
- Alloclavaria purpurea (Description forthcoming)
- Amanita
- Amanita aprica
- Amanita augusta
- Amanita calyptrata: Amanita calyptroderma
- Amanita calyptratoides
- Amanita calyptroderma
- Amanita constricta
- Amanita franchetii: Amanita augusta
- Amanita gemmata
- Amanita lanei: Amanita calyptroderma
- Amanita magniverrucata
- Amanita muscaria
- Amanita novinupta
- Amanita ocreata
- Amanita pachycolea
- Amanita pantherina
- Amanita phalloides
- Amanita porphyria
- Amanita protecta
- Amanita pruittii
- Amanita rubescens: Amanita novinupta
- Amanita silvicola
- Amanita smithiana
- Amanita vaginata
- Amanita velosa
- Amanita vernicoccora
- Anise mushroom: Clitocybe deceptiva
- Annulohypoxylon thouarsianum
- Anthracobia melaloma
- Apioperdon pyriforme
- Arcangeliella crassa: Lactarius crassus(Description forthcoming)
- Arcangeliella desjardinii: Lactarius desjardinii
- Arched Earthstar: Geastrum fornicatum
- Armillaria mellea
- Armillaria sinapina
- Armillaria solidipes
- Armillaria ponderosa: Tricholoma magnivelare
- Armillariella mellea: Armillaria mellea
- Arrhenia epichysium
- Arrhenia obscurata
- Arrhenia retiruga (Description forthcoming)
- Artist's Conk: Ganoderma applanatum
- Artomyces piperatus (Description forthcoming)
- Ascobolus furfuraceus: Ascobolus stercorarius
- Ascobolus stercorarius
- Ascocoryne sarcoides
- Asterophora lycoperdoides
- Astraeus hygrometricus
- Atheniella adonis
- Aureoboletus citriniporus
- Aureoboletus flaviporus
- Aureoboletus mirabilis
- Auricularia americana
- Auriscalpium vulgare
- Baeospora myosura
- Baeospora myriadophylla
- Balsamia magnata
- Battarrea phalloides
- Bear's Head: Hericium abietis
- Beefsteak Fungus: Fistulina hepatica
- Beefsteak Morel: Gyromitra esculenta
- Bird's Nest Fungus: Crucibulum laeve, Cyathus olla, Cyathus striatus, Nidula candida
- Birch Bolete: Leccinum scabrum
- Bisporella sulfurina
- Bjerkandera adusta
- Black Chanterelle: Craterellus cornucopioides
- Black Earth Tongue: Geoglossum fallax, Trichoglossum hirsutum
- Black Elfin Saddle: Helvella dryophila, Helvella vespertina
- Black Morel: Morchella elata
- Black Witch's Butter: Exidia glandulosa
- Blue Chanterelle: Polyozellus multiplex
- Blewitt: Clitocybe nuda
- Blusher: Amanita novinupta
- Bolbitius aleuriatus: Bolbitius reticulatus
- Bolbitius reticulatus
- Bolbitius titubans
- Bolbitius vitellinus: Bolbitius titubans
- Boletopsis grisea
- Boletopsis subsquamosa, Boletopsis leucomelaena: Boletopsis grisea
- Boletus
- Boletus abieticola: Butyriboletus abieticola
- Boletus aereus: Boletus regineus
- Boletus amygdalinus: Suillellus amygdalinus
- Boletus appendiculatus: Butyrbioletus persolidus
- Boletus barrowsii
- Boletus chrysenteron: Xerocomellus diffractus
- Boletus citriniporus: Aureoboletus citriniporus
- Boletus dryophilus: Xerocomellus dryophilus
- Boletus eastwoodiae: Rubroboletus eastwoodiae
- Boletus edulis var. grandedulis
- Boletus fibrillosus
- Boletus flaviporus: Aureoboletus flaviporus
- Boletus frustosus: Caloboletus frustosus
- Boletus haematinus: Rubroboletus haematinus
- Boletus mirabilis: Aureoboletus mirabilis
- Boletus orovillus
- Boletus pinophilus: Boletus rex-veris
- Boletus piperatoides: Chalciporus piperatoides
- Boletus piperatus: Chalciporus piperatus
- Boletus pulcherrimus: Rubroboletus pulcherrimus
- Boletus regineus
- Boletus regius: Butyriboletus autumniregius
- Boletus rex-veris
- Boletus rubripes: Caloboletus rubripes
- Boletus satanas: Boletus eastwoodiae
- Boletus smithii
- Boletus subalpinus
- Boletus subtomentosus: Xerocomus subtomentosus
- Boletus truncatus: Xerocomellus mendocinensis
- Boletus zelleri: Xerocomellus atropurpureus
- Bondarzewia occidentalis (Description forthcoming)
- Botryohypochnus isabellinus
- Bovista aestivalis
- Bovista californica
- Bovista pila
- Bovista plumbea
- Bovista sierraensis
- Brain Mushroom: Gyromitra esculenta
- Brauniellua albipes: Chroogomphus albipes
- Bridgeoporus nobilissimus
- Brown Witch's Butter: Tremella foliacea
- Bulgaria inquinans
- Butter Bolete: Butyriboletus abieticola, Butyriboletus autumniregius, Butyriboletus persolidus, Butyriboletus querciregius
- Button Mushroom: Agaricus bisporus
- Butyriboletus abieticola
- Butyriboletus autumniregius
- Butyriboletus persolidus
- Butyriboletus querciregius
- Byssocorticium californicum
- Byssomerulius corium
- Byssonectria terrestris
- Calbovista subsculpta
- Callistosporium luteo-olivaceum
- Caloboletus frustosus
- Caloboletus rubripes
- Calocera cornea
- Calocera viscosa
- Calocybe carnea: Rugosomyces carneus
- Calocybe onychina: Rugosomyces onychinus
- Caloscypha fulgens
- Calvatia booniana
- Calvatia cyathiformis f. fragilis
- Calvatia fumosa
- Calvatia pachyderma
- Calvatia sculpta
- Calvatia subcretacea: Lycoperdon subcretaceum
- Calvatia utriformis: Lycoperdon utriforme
- Camarophyllus pratensis: Cuphophyllus pratensis
- Camarophyllus russocoriaceus: Cuphophyllus russocoriaceus
- Candolleomyces candolleanus
- Candy Cap: Lactarius rubidus
- Cannon Fungus: Sphaerobolus stellatus
- Cantharellus californicus
- Cantharellus cibarius: Cantharellus californicus, Cantharellus formosus
- Cantharellus formosus
- Cantharellus roseocanus
- Cantharellus subalbidus
- Cantharellus tubaeformis: Craterellus tubaeformis
- Cantharocybe gruberi (Description forthcoming)
- Capitotricha bicolor
- Catathelasma imperiale
- Catathelasma ventricosum
- Cauliflower mushroom: Sparassis crispa
- Caulorhiza umbonata
- Ceriporia spissa (Description forthcoming)
- Chaetothiersia vernalis
- Chalciporus piperatoides
- Chalciporus piperatus
- Chamonixia ambigua
- Champignon: Agaricus campestris
- Chanterelle: Cantharellus californicus, Cantharellus formosus, Cantharellus subalbidus
- Cheilymenia coprinaria: Cheilymenia fimicola
- Cheilymenia fimicola
- Cheimonophyllum candidissimum
- Chlamydopus meyenianus (Description forthcoming)
- Chlorociboria aeruginascens
- Chlorociboria aeruginosa
- Chicken Lips: Leotia viscosa
- Chlorophyllum brunneum
- Chlorophyllum molybdites
- Chlorophyllum olivieri
- Chloroscypha alutipes
- Choiromyces alveolatus
- Chromosera cyanophylla
- Chroogomphus albipes
- Chroogomphus ochraceus
- Chroophompus rutilus: Chroogomphus ochraceus
- Chroogomphus vinicolor
- Chroogomphus tomentosus
- Chrysomphalina aurantiaca
- Chrysomphalina chrysophylla
- Ciboria rufofusca
- Clathrus archeri
- Clathrus ruber
- Clavaria fragilis
- Clavaria vermicularis: Clavaria fragilis
- Clavariadelphus caespitosus (Description forthcoming)
- Clavariadelphus occidentalis
- Clavariadelphus pistillaris: Clavariadelphus occidentalis
- Clavariadelphus truncatus
- Clavulina cinerea
- Clavulina cristata
- Clavulina rugosa
- Clavulinopsis laeticolor
- Clitocybe
- Clitocybe albirhiza
- Clitocybe atrobrunnea: Arrhenia obscurata
- Clitocybe brunneocephala
- Clitocybe dealbata: Clitocybe rivulosa
- Clitocybe deceptiva
- Clitocybe flaccida: Paralepista flaccida
- Clitocybe fragrans
- Clitocybe glacialis
- Clitocybe inversa: Clitocybe flaccida
- Clitocybe nebularis
- Clitocybe nuda
- Clitocybe odora
- Clitocybe rivulosa
- Clitocybe salmonilamella
- Clitocybe sclerotoidea
- Clitocybe squamulosa var. montana
- Clitocybe tarda
- Clitocybula abundans (Description forthcoming)
- Clitopilus nitellinus: Rhodophana nitellina
- Clitopilus prunulus
- Club Coral: Clavariadelphus occidentalis
- Coccoli: Amanita calyptroderma Amanita vernicoccora
- Coccomyces castanopsidis
- Coccora: Amanita calyptroderma Amanita vernicoccora
- Collybia acervata: Gymnopus acervatus
- Collybia badiialba: Rhodocollybia badiialba
- Collybia butyracea: Rhodocollybia butyracea
- Collybia cirrhata
- Collybia cookei
- Collybia tuberosa
- Collybia dryophila: Gymnopus dryophilus
- Collybia racemosa: Dendrocollybia racemosa
- Collybia umbonata: Caulorhiza umbonata
- Collybiopsis quercophila
- Collybiopsis subpruinosa
- Collybiopsis villosipes
- Coltricia cinnamomea
- Coltricia perennis
- Coniophora olivacea
- Connopus acervatus
- Conocybe apala
- Conocybe filaris: Pholiotina rugosa
- Conocybe lactea: Conocybe apala
- Conocybe sp. “olivaceobrunnea”
- Conocybe tenera
- Contumyces rosellus
- Coprinellus angulatus: Tulosesus angulatus
- Coprinellus disseminatus
- Coprinellus flocculosus
- Coprinellus micaceus
- Coprinopsis atramentaria
- Coprinopsis ephemeroides
- Coprinopsis friesii
- Coprinopsis lagopus
- Coprinopsis nivea
- Coprinopsis radiata
- Coprinopsis stercorea
- Coprinopsis uliginicola
- Coprinus
- Coprinus atramentarius: Coprinopsis atramentaria
- Coprinus auricomus: Parasola auricoma
- Coprinus calyptratus
- Coprinus comatus
- Coprinus disseminatus: Coprinellus disseminatus
- Coprinus ephemeroides: Coprinopsis ephemeroides
- Coprinus flocculosus: Coprinellus flocculosus
- Coprinus friesii: Coprinopsis friesii
- Coprinus lagopus: Coprinopsis lagopus
- Coprinus micaceus: Coprinellus micaceus
- Coprinus plicatilis: Parasola auricoma
- Coprinus stercoreus: Coprinopsis stercorea
- Coprinus sterquilinus
- Cordyceps capitata: Tolypocladium capitatum
- Coriolus versicolor: Trametes versicolor
- Cortinarius albofragrans
- Cortinarius alboviolaceus
- Cortinarius californicus
- Cortinarus caperatus
- Cortinarus cinnamomeus
- Cortinarius croceus
- Cortinarius fuligineofolius
- Cortinarius glaucopus
- Cortinarius glutinosoarmillatus
- Cortinarius infractus var. obscurocyaneus
- Cortinarius laniger
- Cortinarus largentii
- Cortinarius magnivelatus
- Cortinarius mucosus
- Cortinarius percomis
- Cortinarius phoeniceus var. occidentalis: Cortinarius smithii
- Cortinarius pinguis
- Cortinarius ponderosus
- Cortinarius rubicundulus: Cortinarius rubiginosus
- Cortinarius rubiginosus
- Cortinarius sierraensis
- Cortinarius smithii
- Cortinarius superbus
- Cortinarius thiersii
- Cortinarius traganus
- Cortinarius trivialis: Cortinarius glutinosoarmillatus
- Cortinarius vanduzerensis
- Cortinarius verrucisporus
- Cortinarius vibratilis
- Cortinarius violaceus
- Cortinarius viridirubescens (Description forthcoming)
- Cortinarius xanthodryophilus
- Cramp Balls: Annulohypoxylon thouarsianum
- Crassisporium funariophilum
- Craterellus calicornucopioides
- Craterellus cornucopioides: Craterellus calicornucopioides
- Craterellus tubaeformis
- Crepidotus calolepis
- Crepidotus caspari
- Crepidotus crocophyllus
- Crepidotus fimbriatus
- Crepidotus mollis: Crepidotus calolepis
- Crinipellis piceae
- Crucibulum laeve
- Cryptoporus volvatus
- Cudonia circinans
- Cudoniella clavus
- Cuphophyllus pratensis
- Cuphophyllus russocoriaceus
- Cuphophyllus virgineus
- Cyathus olla
- Cyathus striatus
- Cypress Agaricus: Agaricus lilaceps
- Cystoderma amianthinum
- Cystoderma carcharias var. fallax
- Cystoderma fallax: Cystoderma carcharias var. fallax
- Cystodermella cinnabarina
- Dacrymyces capitatus
- Dacrymyces chrysospermus
- Dacrymyces palmatus: Dacrymyces chrysospermus
- Dacrymyces stillatus
- Daldinia grandis: Hypoxylon thouarsianum
- Dasyscyphus bicolor: Capitotricha bicolor
- Dasyscyphus virgineus: Lachnum virgineum
- Dead Man's Foot: Pisolithus tinctorius
- Death Cap: Amanita phalloides
- Deconica coprophila
- Deconica inquilina
- Deconica montana
- Deconica subviscida
- Deer Mushroom: Pluteus cervinus
- Dendrocollybia racemosa
- Dendrothele candida (Description forthcoming)
- Dentinum repandum: Hydnum repandum
- Dentinum umbilicatum: Hydnum umbilicatum
- Descomyces albellus
- Destuntzia rubra
- Destuntzia saylorii
- Discina perlata: Gyromitra perlata
- Dissingia leucomelaena
- Donadinia nigrella
- Elaphocordyceps capitata: Tolypocladium capitatum
- Elaphomyces muricatus
- Elaphomyces granulatus (Description forthcoming)
- Entoloma bloxamii: Entoloma medianox
- Entoloma chalybeum
- Entoloma cinereolamellatum
- Entoloma madidum: Entoloma medianox
- Entoloma holoconiotum
- Entoloma lividoalbum
- Entoloma medianox
- Entoloma sericatum
- Entoloma sericellum
- Entoloma sericeum
- Entoloma subcarneum
- Entoloma vernum
- Exidia glandulosa
- Exidia nucleata: Myxarium nucleatum
- Eyelash Cup Fungus: Scutellinia scutellata
- Fairy Fingers: Clavaria vermicularis
- Fairy Ring Mushroom: Marasmius oreades
- False Chanterelle: Hygrophoropsis aurantiaca
- False Morel: Gyromitra esculenta
- False Turkey Tail: Stereum hirsutum
- Fistulina hepatica
- Flammulaster muricatus
- Flammulina velutipes
- Floccularia albolanaripes
- Fly Agaric: Amanita muscaria
- Fomitopsis cajanderi: Rhodofomes cajanderi
- Fomitopsis officinalis: Laricifomes officinalis
- Fomitopsis pinicola
- Fried Chicken Mushroom: Lyophyllum decastes
- Funnel Chanterelle: Cantharellus tubaeformis
- Fuscoporia gilva
- Galerina autumnalis: Galerina marginata
- Galerina marginata
- Galerina semilanceata
- Galerina vittiformis
- Galeropsis polytrichoides
- Gamundia hygrocyboides (Description forthcoming)
- Ganoderma applanatum
- Ganoderma brownii
- Ganoderma oregonense
- Garlic mushroom: Marasmius copelandii
- Gastroboletus amyloideus
- Gastroboletus subalpinus: Boletus subalpinus
- Gastroboletus turbinatus
- Gautieria monticola
- Gautieria pterosperma (Description forthcoming)
- Geastrum coronatum
- Geastrum floriforme
- Geastrum fornicatum
- Geastrum saccatum
- Geoglossum fallax
- Geopora cooperi
- Geopyxis carbonaria
- Geopyxis deceptiva
- Geoscypha violacea
- Gloeophyllum sepiarium (Description forthcoming)
- Gliophorus laetus
- Gliophorus psittacinus
- Glomus macrocarpus
- Gomphidius glutinosus
- Gomphidius oregonensis
- Gomphidius subroseus
- Gomphus clavatus
- Gomphus floccosus: Turbinellus floccosus
- Gomphus kauffmanii: Turbinellus kauffmanii
- Grisette: Amanita constricta, Amanita pachycolea, Amanita vaginata
- Gymnopilus aurantiophyllus
- Gymnopilus junonius: Gymnopilus ventricosus
- Gymnopilus luteofolius
- Gymnopilus penetrans
- Gymnopilus sapineus: Gymnopilus aurantiophyllus
- Gymnopilus spectabilis: Gymnopilus ventricosus
- Gymnopilus ventricosus
- Gymnopus acervatus: Connopus acervatus
- Gymnopus androsaceus
- Gymnopus bakerensis
- Gymnopus brassicolens
- Gymnopus confluens
- Gymnopus dryophilus
- Gymnopus quercophilus: Collybiopsis quercophila
- Gymnopus subpruinosus: Collybiopsis subpruinosa
- Gymnopus vernus (Description forthcoming)
- Gymnopus villosipes: Collybiopsis villosipes
- Gymnosporangium libocedri
- Gyromitra californica
- Gyromitra esculenta
- Gyromitra gigas: Gyromitra montana
- Gyromitra infula
- Gyromitra montana
- Gyromitra perlata
- Handkea fumosa: Calvatia fumosa
- Handkea subcretacea: Lycoperdon subcretaceum
- Handkea utriformis: Lycoperdon utriforme
- Haymaker's mushroom: Panaeolus foenisecii
- Hebeloma crustuliniforme
- Hebeloma mesophaeum
- Hebeloma sinapizans
- Hedgehog: Hydnum repandum, Hydnum umbilicatum
- Helminthosphaeria clavariarum
- Helvella acetabulum
- Helvella compressa
- Helvella dryophila
- Helvella lacunosa: Helvella dryophila, Helvella vespertina
- Helvella leucomelaena: Dissingia leucomelaena
- Helvella maculata
- Helvella queletii: Helvella solitaria
- Helvella solitaria
- Helvella vespertina
- Henningsomyces candidus
- Hericium abietis
- Hericium coralloides
- Hericium erinaceus
- Hericium ramosum: Hericium coralloides
- Heterotexus alpinus
- Heyderia abietis
- Hirschioporus abietinus: Trichaptum abietinum
- Hohenbuehelia atrocaerulea var. grisea: Hohenbuehelia grisea
- Hohenbuehelia grisea
- Hohenbuehelia mastrucata
- Hohenbuehelia petaloides
- Honey Mushroom: Armillaria mellea
- Horn of Plenty: Craterellus cornucopioides
- Horse Mushroom: Agaricus arvensis
- Hydnangium carneum
- Hydnellum aurantiacum
- Hydnellum cyanopodium
- Hydnellum peckii
- Hydnellum scrobiculatum
- Hydnellum suaveolens
- Hydnotrya variiformis
- Hydnum oregonense
- Hydnum repandum
- Hydnum umbilicatum: Hydnum oregonense
- Hygrocybe
- Hygrocybe acutoconica
- Hygrocybe coccinea
- Hygrocybe conica
- Hygrocybe flavescens
- Hygrocybe flavifolia
- Hygrocybe miniata
- Hygrocybe olivaceoniger (Description forthcoming)
- Hygrocybe psittacina: Gliophorus psittacinus
- Hygrocybe punicea
- Hygrocybe singeri
- Hygrocybe virescens
- Hygrophoropsis aurantiaca
- Hygrophorus albofloccosus
- Hygrophorus agathosmus: Hygrophorus albofloccosus
- Hygrophorus bakerensis
- Hygrophorus caeruleus
- Hygrophorus chrysodon
- Hygrophorus coccinea: Hygrocybe coccinia
- Hygrophorus conicus: Hygrocybe conica
- Hygrophorus eburneus
- Hygrophorus erubescens: Hygrophorus neoerubescens
- Hygrophorus flavescens: Hygrocybe flavescens
- Hygrophorus goetzii
- Hygrophorus gliocyclus
- Hygrophorus hypothejus
- Hygrophorus miniatus: Hygrocybe miniata
- Hygrophorus neoerubescens
- Hygrophorus pratensis: Cuphophyllus pratensis
- Hygrophorus psittacinus: Gliophorus psittacinus
- Hygrophorus pudorinus
- Hygrophorus pusillus
- Hygrophorus purpurascens
- Hygrophorus puniceus: Hygrocybe punicea
- Hygrophorus roseobrunneus
- Hygrophorus russocoriaceus: Camarophyllus russocoriaceus
- Hygrophorus russula
- Hygrophorus singeri: Hygrocybe singeri
- Hygrophorous subalpinus
- Hygroscopic Earthstar: Astraeus hygrometricus
- Hymenochaete cinnamomea (Description forthcoming)
- Hymenogaster sublilacinus
- Hymenogaster utriculatus
- Hymenoscyphus repandus (Description forthcoming)
- Hypholoma
- Hypholoma aurantiaca: Leratiomyces ceres
- Hypholoma capnoides
- Hypholoma fasciculare
- Hypocrea alutacea
- Hypomyces cervinigenus
- Hypomyces chrysospermus
- Hypomyces lactifluorum
- Hypoxylon thouarsianum: Annulohypoxylon thouarsianum
- Hysterangium coriaceum
- Inky Cap: Coprinopsis atramentaria
- Inocybe
- Inocybe albodisca
- Inocybe adaequata: Inosperma adaequatum
- Inocybe brunnescens
- Inocybe calamistrata:Inosperma calamistratum
- Inocybe chelanensis
- Inocybe citrifolia
- Inocybe corydalina
- Inocybe flocculosa
- Inocybe fraudans
- Inocybe geophylla var. geophylla: Inocybe insinuata
- Inocybe geophylla var. lilacina: Inocybe pallidicremea, Inocybe ionocephala
- Inocybe griseolilacina
- Inocybe insinuata
- Inocybe lanuginosa
- Inocybe lilacina: Inocybe pallidicremea, Inocybe ionocephala
- Inocybe ionocephala
- Inocybe multifolia
- Inocybe pallidicremea
- Inocybe pudica
- Inocybe sororia: Pseudosperma sororium
- Inocybe subdestricta
- Inosperma adaequatum
- Inosperma calamistratum
- Jack–O–Lantern: Omphalotus olivascens
- Jahnoporus hirtus
- Jelly Bellies: Leotia lubrica
- Kavinia alboviridis
- King Bolete: Boletus edulis
- Kriegeria alutipes: Chloroscypha alutipes
- Kuehneromyces lignicoloa
- Kuehneromyces vernalis: Kuehneromyces lignicoloa
- Kurotake: Boletopsis grisea
- Laccaria
- Laccaria amethysteo-occidentalis
- Laccaria fraterna
- Laccaria laccata var. pallidifolia
- Laccaria proxima
- Lachnellula arida
- Lachnellula calyciformis
- Lachnellula fuscosanguinea
- Lachnum virgineum
- Lacrymaria lacrymabunda
- Lactarius
- Lactarius aestivus
- Lactarius alnicola
- Lactarius argillaceifolius var. megacarpus
- Lactarius camphoratus: Lactarius rubidus
- Lactarius crassus
- Lactarius deliciosus
- Lactarius desjardinii
- Lactarius fallax
- Lactarius fragilis var. rubidus: Lactarius rubidus
- Lactarius kauffmanii var. kauffmanii
- Lactarius luculentus
- Lactarius pallescens
- Lactarius pubescens var. betulae
- Lactarius rubidus
- Lactarius rubrilacteus
- Lactarius rubriviridus (Description forthcoming)
- Lactarius rufulus
- Lactarius rufus
- Lactarius pseudomucidus
- Lactarius subviscidus
- Lactarius xanthogalactus
- Laetiporus conifericola
- Laetiporus gilbertsonii
- Laetiporus sulphureus: Laetiporus gilbertsonii
- Landscape Morel: Morchella rufobrunnea
- Lantern Stinkhorn: Lysurus mokusin
- Laricifomes officinalis
- Leccinum
- Leccinum brunneum
- Leccinum discolor
- Leccinum largentii
- Leccinum manzanitae
- Leccinum scabrum
- Lentaria mucida: Multiclavula mucida
- Lentinellus montanus
- Lentinellus ursinus
- Lentinus ponderosus: Neolentinus ponderosus
- Lentinus torulosus: Panus conchatus
- Lenzites betulina: Trametes betulina
- Leotia lubrica
- Leotia viscosa
- Lepiota atrodisca
- Lepiota cepaestipes: Leucocoprinus cepaestipes
- Lepiota clypeolaria: Lepiota magnispora
- Lepiota castaneidisca
- Lepiota cristata: Lepiota castaneidisca
- Lepiota decorata
- Lepiota flammeotincta: Leucocoprinus flammeotinctus
- Lepiota lutea: Leucocoprinus birnbaumii
- Lepiota magnispora
- Lepiota naucina: Leucoagaricus leucothites
- Lepiota rachodes: Chlorophyllum brunneum
- Lepiota roseifolia: Leucoagaricus erythrophaeus
- Lepiota roseolivida
- Lepiota rubrotinctoides
- Lepiota subincarnata
- Lepiota ventriosospora: Lepiota magnispora
- Lepista nebularis: Clitocybe nebularis
- Lepista nuda: Clitocybe nuda
- Lepista tarda: Clitocybe tarda
- Leptonia carnea: Entoloma subcarneum
- Leptoporus mollis
- Leratiomyces ceres
- Leratiomyces cucullatus
- Leratiomyces percevalii
- Leratiomyces riparius: Leratiomyces percevalii
- Leucoagaricus americanus
- Leucoagaricus barssii
- Leucoagaricus cupresseus
- Leucoagaricus erythrophaeus: Leucocoprinus erythrophaeus
- Leucoagaricus leucothites: Leucocoprinus leucothites
- Leucoagaricus naucinus: Leucocoprinus leucothites
- Leucoagaricus rubritinctus: Lepiota rubrotinctoides
- Leucocoprinus birnbaumii
- Leucocoprinus brebissonii
- Leucocoprinus cepaestipes
- Leucocoprinus erythrophaeus
- Leucocoprinus flammeotinctus
- Leucocoprinus leucothites
- Leucogaster rubescens
- Leucopaxillus albissimus
- Leucopaxillus amarus: Leucopaxillus gentianeus
- Leucopaxillus gentianeus
- Leucophleps spinospora
- Lichenomphalia umbellifera
- Lion's Mane: Hericium erinaceus
- Lobster mushroom: Hypomyces lactifluorum
- Longula texensis: Agaricus deserticola
- Lycoperdon curtisii
- Lycoperdon molle
- Lycoperdon nigrescens
- Lycoperdon perlatum
- Lycoperdon pyriforme: Apioperdon pyriforme
- Lycoperdon subcretaceum
- Lycoperdon umbrinum
- Lycoperdon utriforme
- Lycoperdon vernimontanum
- Lion's Mane: Hericium erinaceus
- Lyophyllum decastes
- Lysurus mokusin
- Macrocystidia cucumis
- Macrolepiota rachodes: Chlorophyllum brunneum
- Macrotyphula juncea
- Man on Horseback: Tricholoma flavovirens
- Matsutake: Tricholoma magnivelare
- Marasmiellus candidus
- Marasmiellus confluens: Gymnopus confluens
- Marasmiellus quercophilus: Collybiopsis quercophila
- Marasmiellus subpruinosus: Collybiopsis subpruinosa
- Marasmiellus villosipes: Collybiopsis villosipes
- Marasmius
- Marasmius androsaceus: Gymnopus androsaceus
- Marasmius albogriseus
- Marasmius armeniacus
- Marasmius calhouniae
- Marasmius copelandii: Mycetinis copelandii
- Marasmius curreyi
- Marasmius oreades
- Marasmius plicatulus
- Marasmius quercophilus: Gymnopus quercophilus
- Meadow Mushroom: Agaricus campestris
- Megacollybia fallax
- Megacollybia platyphylla: Megacollybia fallax
- Melanogaster tuberiformis
- Melanoleuca angelesiana
- Melanoleuca evenosa
- Melanoleuca lewisii
- Melanophyllum haematospermum
- Mica Cap: Coprinus micaceus
- Microglossum viride
- Micromphale arbuticola
- Micromphale sequoiae: Paragymnopus sequoiae
- Mitrula elegans
- Mniopetalum bryophila: Rimbachia bryophila
- Montagnea arenaria (Description forthcoming)
- Morchella deliciosa: Morchella rufobrunnea
- Morchella elata
- Morchella importuna
- Morchella rufobrunnea
- Morchella snyderi
- Morchella tridentina
- Morel: Morchella rufobrunnea, Morchella elata, Morchella snyderi
- Morganella pyriformis: Lycoperdon pyriforme
- Mucronella bresadolae
- Mucronella flava
- Multiclavula mucida: Multiclavula vernalis
- Multiclavula vernalis
- Mycena abramsii
- Mycena acicula
- Mycena adonis: Atheniella adonis
- Mycena adscendens: Mycena tenerrima
- Mycena amicta
- Mycena aurantiomarginata
- Mycena bulliformis (Description forthcoming)
- Mycena californiensis
- Mycena capillaripes
- Mycena citrinomarginata
- Mycena corticalis (Description forthcoming)
- Mycena epipterygia
- Mycena filopes (Description forthcoming)
- Mycena galericulata
- Mycena galopus
- Mycena griseoviridis: Mycena nivicola
- Mycena haematopus
- Mycena leptocephala (Description forthcoming)
- Mycena lilacifolia: Chromosera cyanophylla
- Mycena maculata
- Mycena nivicola
- Mycena oregonensis
- Mycena overholtsii
- Mycena pura
- Mycena purpureofusca
- Mycena rorida: Roridomyces roridus
- Mycena rosella (Description forthcoming)
- Mycena sanguinolenta (Description forthcoming)
- Mycena speirea: Phloeomana speirea
- Mycena strobilinoides
- Mycena subcana
- Mycena tenerrima
- Mycenastrum corium
- Mycetinis copelandii
- Mythicomyces corneipes
- Myxarium nucleatum
- Myxomphalia maura
- Naematelia aurantia
- Naematoloma aurantiaca: Hypholoma aurantiaca
- Naematoloma capnoides: Hypholoma capnoides
- Naematoloma fasciculare: Hypholoma fasciculare
- Naucoria vinicolor: Tubaria punicea
- Nectria cinnabarina (Description forthcoming)
- Neoalbatrellus subcaeruleoporus
- Neohygrophorus angelesianus: Pseudoomphalina angelesiana
- Neolentinus kauffmanii
- Neolentinus ponderosus
- Nidula candida
- Nidula niveotomentosa
- Nivatogastrium nubigenum: Pholiota nubigena
- Nolanea holoconiota: Entoloma holoconiotum
- Nolanea verna var. isodiametica: Entoloma vernum
- Octopus stinkhorn: Clathrus archeri
- Oligoporus ceasius: Postia caesia
- Oligoporus fragilis: Postia fragilis
- Oligoporus leucospongia: Postia leucospongia
- Omphalina epichysium: Arrhenia epichysium
- Omphalina ericetorum: Lichenomphalia umbellifera
- Omphalotus olivascens
- Onnia triquetra
- Orange cup: Aleuria aurantia
- Otidea alutacea
- Oyster mushroom: Pleurotus ostreatus
- Pachylepyrium carbonicola: Crassisporium funariophilum
- Panaeolina foenisecii
- Panaeolus campanulatus: Panaeolus papilionaceus
- Panaeolus foenisecii: Panaeolina foenisecii
- Panaeolus papilionaceus
- Panaeolus retirugis: Panaeolus papilionaceus
- Panaeolus semiovatus
- Panaeolus sphinctrinus: Panaeolus papilionaceus
- Panellus stipticus
- Panther: Amanita pantherina
- Panus conchatus
- Paragymnopus sequoiae
- Paralepista flaccida
- Parasola auricoma
- Parasola conopilea
- Parasola lactea
- Parasola leiocephala: Parasola lactea
- Parasola plicatilis: Parasola lactea
- Parrot mushroom: Gliophorus psittacinus
- Paxillus cuprinus (Description forthcoming)
- Paxillus involutus
- Paxillus atrotomentosa: Tapinella atrotomentosa
- Paxillus panuoides: Tapinella panuoides
- Peziza ellipsospora
- Peziza repanda
- Peziza vesiculosa
- Peziza violacea: Geoscypha violacea
- Phaeoclavulina abietina
- Phaeoclavulina myceliosa
- Phaeocollybia attenuata
- Phaeocollybia benzokauffmanii
- Phaeocollybia californica
- Phaeocollybia fallax
- Phaeocollybia kauffmanii
- Phaeocollybia lilacifolia
- Phaeocollybia olivacea
- Phaeocollybia redheadii
- Phaeocollybia scatesiae
- Phaeolus schweinitzii
- Phaeomarasmius erinaceus
- Phallus hadriani
- Phellinus gilvus: Fuscoporia gilva
- Phellinus pomaceoides
- Phellinus pomaceus: Phellinus pomaceoides
- Phellodon atratus
- Phellodon tomentosus
- Phlebia acerina
- Phlebia tremellosa
- Phloeomana speirea
- Pholiota astragalina: Pyrrhulomyces astragalinus
- Pholiota aurivella
- Pholiota decorata
- Pholiota flammans
- Pholiota highlandensis: Pholiota molesta
- Pholiota molesta
- Pholiota nubigena
- Pholiota spumosa
- Pholiota squarrosa
- Pholiota terrestris
- Pholiota velaglutinosa
- Pholiotina arrhenii
- Pholiotina rugosa
- Phylloporus arenicola
- Phylloporus rhodoxanthus
- Phyllotopsis nidulans
- Pig's Ears: Discina perlata, Gomphus clavatus
- Pilobolus roridus
- Pine Spike: Chroogomphus ochraceus, Chroogomphus vinicolor
- Pisolithus arhizus
- Pisolithus tinctorius: Pisolithus arhizus
- Pithya cupressina
- Plectania melastoma
- Plectania milleri
- Plectania nannfeldtii: Donadinia nigrella
- Pleurotus ostreatus
- Pleurotus petaloides: Hohenbuehelia petaloides
- Plicaria endocarpoides
- Pluteus atromarginatus
- Pluteus cervinus
- Pluteus flavofuligineus: Pluteus leoninus
- Pluteus leoninus
- Pluteus petasatus
- Pluteus pouzarianus
- Pluteus romellii
- Poison Pie: Hebeloma crustuliniforme
- Podaxis pistillaris
- Polyozellus multiplex
- Polyporus badius
- Polyporus elegans: Polyporus leptocephalus
- Polyporus leptocephalus
- Polyporus tuberaster
- Polyporus versicolor: Trametes versicolor
- Porcini: Boletus edulis
- Porphyrellus porphyrosporus
- Porpolomopsis calyptriformis
- Postia caesia
- Postia fragilis
- Postia leucospongia: Spongiporus leucospongia
- Prince: Agaricus augustus
- Protostropharia semiglobata
- Psathyrella bipellis
- Psathyrella candolleana: Candolleomyces candolleanus
- Psathyrella corrugis
- Psathyrella echiniceps
- Psathyrella ellenae var. yubaensis
- Psathyrella gracilis: Psathyrella corrugis
- Psathyrella hydrophila: Psathyrella piluliformis
- Psathyrella longipes
- Psathyrella longistriata
- Psathyrella piluliformis
- Pseudobaeospora aphana (Description forthcoming)
- Pseudobaeospora deckeri
- Pseudobaeospora stevensii
- Pseudocoprinus disseminatus: Coprinellus disseminatus
- Pseudoclitocybe cyathiformis
- Pseudohydnum gelatinosum
- Pseudoomphalina angelesiana
- Pseudopithyella minuscula
- Pseudoplectania nigrella
- Pseudorhizina californica: Gyromitra californica
- Pseudosperma sororium
- Psilocybe
- Psilocybe allenii
- Psilocybe coprophila: Deconica coprophila
- Psilocybe cyanescens
- Psilocybe montana: Deconica montana
- Psilocybe semilanceata
- Psilocybe subviscida: Deconica subviscida
- Puccinia monoica
- Puffball: Bovista dermoxantha, Bovista pila, Bovista plumbea
- Puffball: Calvatia sculpta, Calbovista subsculpta, Calvatia fumosa, Calvatia fumosa
- Puffball:Lycoperdon subcretaceum, Lycoperdon utriforme, Lycoperdon perlatum, Lycoperdon nigrescens
- Puffball: Apioperdon pyriforme, Vascellum lloydiamum
- Pulveroboletus ravenelii
- Punctularia atropurpurascens (Description forthcoming)
- Pycnoporellus alboluteus
- Pyrenogaster atroglebus: Schenella simplex (Description forthcoming)
- Pyronema omphalodes
- Pyrrhulomyces astragalinus
- Queen Bolete: Boletus regineus
- Radiigera atrogleba: Schenella simplex
- Ramaria abietina: Phaeoclavulina abietina
- Ramaria acrisiccescens
- Ramaria apiculata
- Ramaria araiospora
- Ramaria botrytis
- Ramaria conjunctipes var. tsugensis
- Ramaria flavigelatinosa
- Ramaria formosa
- Ramaria gelatiniaurantia
- Ramaria maculatipes
- Ramaria myceliosa: Phaeoclavulina myceliosa
- Ramaria purpurissima
- Ramaria rasilispora var. scatesiana
- Ramaria rubricarnata var. verna
- Ramaria sandaracina var. chondrobasis
- Ramaria stricta
- Ramaria violaceibrunnea
- Ramariopsis kunzei
- Redwood Rooter: Caulorhiza umbonata
- Rhizopogon occidentalis
- Rhodocollybia badiialba
- Rhodocollybia butyracea
- Rhodocollybia maculata
- Rhodocybe nitellina: Rhodophana nitellina
- Rhodofomes cajanderi
- Rhodophana nitellina
- Rickenella fibula
- Rickenella swartzii
- Rimbachia bryophila
- Roridomyces roridus
- Rosy Russula: Russula sanguinea
- Rozites caperatus: Cortinarus caperatus
- Rubroboletus eastwoodiae
- Rubroboletus haematinus
- Rubroboletus pulcherrimus
- Rugosomyces carneus
- Rugosomyces onychinus
- Russula
- Russula abietina (Description forthcoming)
- Russula albonigra
- Russula aeruginea
- Russula albidula
- Russula amoenolens: Russula cerolens
- Russula atroviolacea
- Russula basifurcata
- Russula brevipes
- Russula cerolens
- Russula cyanoxantha
- Russula densifolia
- Russula dissimulans (Description forthcoming)
- Russula californiensis
- Russula cantharellicola
- Russula eccentrica: Russula cantharellicola
- Russula fragilis
- Russula fragrantissima
- Russula murrillii
- Russula mustelina
- Russula olivacea
- Russula queletii
- Russula sanguinea
- Russula silvicola
- Russula subnigricans: Russula cantharellicola
- Russula xerampelina
- Sarcodon imbricatus
- Sarcodon laevigatus
- Sarcodon squamosus
- Sarcoscypha coccinea
- Sarcosoma mexicanum: Urnula padeniana
- Sarcosphaera coronaria
- Scaly Chanterelle: Turbinellus floccosus
- Scarlet Waxy Cap: Hygrocybe punicea
- Schizophyllum commune
- Schizopora paradoxa
- Schenella pityophila (Description forthcoming)
- Schenella simplex (Description forthcoming)
- Scleroderma cepa
- Sclerotinia veratri
- Sclerotinia sulcata
- Sculpted puffball: Calvatia sculpta
- Scutellinia scutellata
- Sebacina epigaea
- Sedecula pulvinata
- Serpula himantioides
- Shaggy Mane: Coprinus comatus
- Shaggy Parasol: Chlorophyllum brunneum
- Schenella simplex
- Simocybe centunculus
- Sistotrema muscicola
- Slippery Jack: Suillus pungens
- Snow Mushroom: Gyromitra montana
- Sowerbyella rhenana
- Sparasssis crispa: Sparassis radicata
- Sparassis radicata
- Sphaerobolus stellatus
- Spinellus fusiger
- Spongiporus leucospongia
- Split gill: Schizophyllum commune
- Spring Amanita: Amanita velosa
- Steccherinum ochraceum
- Stereum hirsutum
- Stereum ochraceo-flavum
- Stereum sanguinolentum
- Stinkhorn: Phallus hadriani; Lysurus mokusin
- Strobilurus
- Strobilurus albipitatus
- Strobilurus diminutivus
- Strobilurus trullisatus
- Stropharia
- Stropharia ambigua
- Stropharia coronilla
- Stropharia riparia: Leratiomyces percevalii
- Stropharia semiglobata: Protostropharia semiglobata
- Suillellus amygdalinus
- Suillus
- Suillus americanus
- Suillus brevipes
- Suillus caerulescens
- Suillus fuscotomentosus
- Suillus quiescens
- Suillus lakei
- Suillus megaporinus
- Suillus ponderosus
- Suillus pungens
- Suillus sibiricus: Suillus americanus
- Suillus tomentosus
- Suillus umbonatus
- Suillus volcanalis
- Sulphur Shelf: Laetiporus gilbertsonii
- Sulphur Tuft: Hypholoma fasciculare
- Sweetbread Mushroom: Clitopilus prunulus
- Tapinella atrotomentosa
- Tapinella panuoides
- Tephrocybe anthracophila
- Tetrapyrgos subdendrophora
- Thaxterogaster pinguis: Cortinarius pinguis
- Thelephora multipartita (Description forthcoming)
- Thelephora palmata
- Thelephora terrestris
- Thimble Fungus: Verpa conica
- Tolypocladium capitatum
- Toothed Jelly Fungus: Pseudohydnum gelatinosum
- Torq: Agaricus bitorquis
- Trametes betulina
- Trametes versicolor
- Trappea darkeri
- Trappea phillipsii
- Tremella aurantia: Naematelia aurantia
- Tremella foliacea
- Tremellodendropsis tuberosa
- Trichaptum abietinum
- Tricharina gilva
- Trichoglossum hirsutum
- Tricholoma
- Tricholoma atroviolaceum
- Tricholoma dryophilum
- Tricholoma equestre
- Tricholoma flavovirens: Tricholoma equestre
- Tricholoma focale
- Tricholoma fracticum
- Tricholoma griseoviolaceum
- Tricholoma imbricatum
- Tricholoma inamoenum
- Tricholoma magnivelare: Tricholoma murrillianum
- Tricholoma moseri
- Tricholoma muricatum
- Tricholoma murrillianum
- Tricholoma myomyces var. cystidiotum: Tricholoma terreum var. cystidiotum
- Tricholoma pardinum
- Tricholoma pessundatum: Tricholoma muricatum
- Tricholoma portentosum
- Tricholoma saponaceum
- Tricholoma scalpturatum
- Tricholoma sejunctum
- Tricholoma terreum var. cystidiotum
- Tricholoma vaccinum
- Tricholoma vernaticum
- Tricholoma yatesii
- Tricholomopsis platyphylla: Megacollybia platyphylla
- Tricholomopsis rutilans
- Truncocolumella citrina
- Tubaria confragosa
- Tubaria furfuracea
- Tubaria punicea
- Tuber californicum
- Tuber candidum
- Tuber oregonense
- Tuber rufum: Tuber candidum
- Turbinellus floccosus
- Turbinellus kauffmanii
- Turkey Tail: Trametes versicolor
- Tulosesus angulatus
- Tylopilus
- Tylopilus ammiratii (Description forthcoming)
- Tylopilus indecisus
- Tylopilus porphyrosporus: Porphyrellus porphyrosporus
- Tylopilus pseudoscaber: Porphyrellus porphyrosporus
- Typhula variabilis (Description forthcoming)
- Tyromyces caesius: Postia caesia
- Tyromyces chioneus
- Tyromyces fragilis: Postia fragilis
- Urnula padeniana
- Velvet foot: Flammulina velutipes
- Vascellum lloydianum
- Vascellum pratense: Vascellum lloydianum
- Veluticeps fimbriata
- Verpa conica
- Volvariella speciosa: Volvopluteus gloiocephalus
- Volvopluteus gloiocephalus
- Weraroa cucullata: Leratiomyces cucullatus
- Western Grisette: Amanita pachycolea
- White Chanterelle: Cantharellus subalbidus
- Witch's Butter: Naematelia aurantia, Dacrymyces palmatus
- Witch's Hat: Hygrocybe conica, Hygrocybe singeri
- Wooly Chanterelle: Turbinellus floccosus
- Xerocomellus amylosporus
- Xerocomellus atropurpureus
- Xerocomellus chyrsenteron: Xerocomellus diffractus
- Xerocomellus diffractus
- Xerocomellus dryophilus
- Xerocomellus mendocinensis
- Xerocomellus truncatus: Xerocomellus mendocinensis
- Xerocomellus zelleri: Xerocomellus atropurpureus
- Xerocomellus zelleri
- Xerocomus subtomentosus
- Xeromphalina campanella
- Xeromphalina cauticinalis
- Xylaria hypoxylon
- Yellow Chanterelle: Cantharellus californicus, Cantharellus formosus, Cantharellus roseocanus
- Yellow Foot: Craterellus tubaeformis
- Yellow Stainer: Agaricus xanthodermus