621 species
488 descriptions
4924 photographs
1644 links
- Abortiporus biennis
- Agaricus
- Agaricus albolutescens
- Agaricus arorae
- Agaricus arvensis
- Agaricus augustus
- Agaricus benesii
- Agaricus bernardii
- Agaricus bisporus
- Agaricus bitorquis
- Agaricus blazei: Agaricus subrufescens
- Agaricus californicus
- Agaricus campestris
- Agaricus comtulus
- Agaricus cupreo-brunneus
- Agaricus deserticola
- Agaricus diminutivus
- Agaricus fusco-fibrillosus
- Agaricus fuscovelatus
- Agaricus hondensis
- Agaricus lilaceps
- Agaricus micromegathus
- Agaricus meleagris: Agaricus praeclaresquamosus
- Agaricus pattersonae
- Agaricus perobscurus
- Agaricus praeclaresquamosus
- Agaricus semotus
- Agaricus smithii
- Agaricus subrutilescens
- Agaricus subrufescens
- Agaricus sylvicola
- Agaricus xanthodermus
- Agrocybe pediades
- Agrocybe praecox
- Agrocybe putaminum (Description forthcoming)
- Albatrellus caeruleoporus (Description forthcoming)
- Albatrellus ellisii (Description forthcoming)
- Albatrellus flettii (Description forthcoming)
- Alboleptonia sericella: Entoloma sericellum
- Aleuria aurantia
- Aleuria rhenana: Sowerbyella rhenana
- Amanita
- Amanita aprica (Description forthcoming)
- Amanita augusta
- Amanita calyptrata: Amanita lanei
- Amanita constricta
- Amanita franchetii: Amanita augusta
- Amanita gemmata (Description forthcoming)
- Amanita lanei
- Amanita magniverrucata
- Amanita muscaria
- Amanita novinupta
- Amanita ocreata
- Amanita pachycolea
- Amanita pantherina
- Amanita phalloides
- Amanita protecta
- Amanita rubescens: Amanita novinupta
- Amanita smithiana
- Amanita vaginata
- Amanita velosa
- Anise mushroom: Clitocybe deceptiva
- Annulohypoxylon thouarsianum
- Arcangeliella crassa (Description forthcoming)
- Arcangeliella desjardinii (Description forthcoming)
- Arched Earthstar: Geastrum fornicatum
- Armillaria mellea
- Armillaria sinapina
- Armillaria ponderosa: Tricholoma magnivelare
- Armillariella mellea: Armillaria mellea
- Arrhenia epichysium
- Arrhenia obscurata
- Artist's Conk: Ganoderma applanatum
- Ascobolus furfuraceus: Ascobolus stercorarius
- Ascobolus stercorarius (Description forthcoming)
- Ascocoryne sarcoides
- Astraeus hygrometricus
- Atheniella adonis
- Aureoboletus citriniporus
- Aureoboletus flaviporus
- Auriscalpium vulgare
- Baeospora myosura
- Baeospora myriadophylla (Description forthcoming)
- Battarraea phalloides
- Bear's Head: Hericium abietis
- Beefsteak Fungus: Fistulina hepatica (Description forthcoming)
- Beefsteak Morel: Gyromitra esculenta
- Bird's Nest Fungus: Crucibulum laeve, Cyathus olla, Cyathus striatus, Nidula candida
- Birch Bolete: Leccinum scabrum
- Bisporella sulfurina
- Black Chanterelle: Craterellus cornucopioides
- Black Earth Tongue: Geoglossum fallax, Trichoglossum hirsutum
- Black Elfin Saddle: Helvella lacunosa
- Black Morel: Morchella elata
- Black Witch's Butter: Exidia glandulosa
- Blewitt: Clitocybe nuda
- Blusher: Amanita novinupta
- Bolbitius aleuriatus: Bolbitius reticulatus
- Bolbitius reticulatus
- Bolbitius titubans
- Boletus vitellinus: Bolbitius titubans
- Boletopsis grisea
- Boletopsis subsquamosa, Boletopsis leucomelaena: Boletopsis grisea
- Boletus
- Boletus abieticola
- Boletus aereus: Boletus regineus
- Boletus amygdalinus
- Boletus appendiculatus
- Boletus chrysenteron: Xerocomellus chrysenteron
- Boletus citriniporus: Aureoboletus citriniporus
- Boletus dryophilus
- Boletus eastwoodiae
- Boletus edulis
- Boletus fibrillosus (Description forthcoming)
- Boletus flaviporus: Aureoboletus flaviporus
- Boletus frustosus (Description forthcoming)
- Boletus haematinus (Description forthcoming)
- Boletus mirabilis (Description forthcoming)
- Boletus orovillus
- Boletus pinophilus: Boletus rex-veris
- Boletus piperatoides: Chalciporus piperatoides
- Boletus piperatus: Chalciporus piperatus
- Boletus pulcherrimus
- Boletus regineus
- Boletus regius
- Boletus rex-veris
- Boletus rubripes
- Boletus satanas: Boletus eastwoodiae
- Boletus smithii
- Boletus subtomentosus: Xerocomus subtomentosus
- Boletus truncatus: Xerocomellus truncatus
- Boletus zelleri: Xerocomellus zelleri
- Bovista aestivalis
- Bovista californica
- Bovista pila
- Bovista plumbea
- Brain Mushroom: Gyromitra esculenta
- Brauniellua albipes: Chroogomphus albipes
- Brown Witch's Butter: Tremella foliacea
- Bulgaria inquinans
- Butter Bolete: Boletus appendiculatus, Boletus regius
- Button Mushroom: Agaricus bisporus
- Byssonectria terrestris
- Calbovista subsculpta
- Callistosporium luteo-olivaceum (Description forthcoming)
- Calocera cornea
- Calocybe carnea
- Calocybe onychina: Rugosomyces onychinus
- Caloscypha fulgens
- Calvatia booniana
- Calvatia cyathiformis f. fragilis
- Calvatia fumosa: Handkea fumosa
- Calvatia pachyderma
- Calvatia sculpta
- Calvatia subcretacea: Handkea subcretacea
- Calvatia utriformis: Handkea utriformis
- Camarophyllus pratensis: Cuphophyllus pratensis
- Camarophyllus russocoriaceus: Cuphophyllus russocoriaceus
- Candy Cap: Lactarius rubidus
- Cannon Fungus: Sphaerobolus stellatus
- Cantharellus californicus (Description forthcoming)
- Cantharellus cibarius
- Cantharellus formosus (Description forthcoming)
- Cantharellus subalbidus
- Cantharellus tubaeformis: Craterellus tubaeformis
- Cantharocybe gruberi (Description forthcoming)
- 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
- Chlorociboria aeruginascens
- Chlorociboria aeruginosa
- Chloroscypha alutipes (Description forthcoming)
- Chicken Lips: Leotia viscosa
- Chlorophyllum brunneum
- Chlorophyllum molybdites
- Chloroscypha alutipes: Kriegeria alutipes (Description forthcoming)
- Chromosera cyanophylla
- Chroogomphus albipes
- Chroogomphus ochraceus
- Chroophompus rutilus: Chroogomphus ochraceus
- Chroogomphus vinicolor
- Chroogomphus tomentosus
- Chrysomphalina aurantiaca (Description forthcoming)
- Chrysomphalina chrysophylla
- Ciboria rufofusca (Description forthcoming)
- Clathrus archeri
- Clathrus ruber
- Clavaria fragilis
- Clavaria vermicularis: Clavaria fragilis
- Clavariadelphus caespitosus (Description forthcoming)
- Clavariadelphus occidentalis
- Clavariadelphus pistillaris: Clavariadelphus occidentalis
- Clavariadelphus truncatus
- Clavicorona pyxidata (Description forthcoming)
- Clavulina cinerea
- Clavulina cristata
- Clavulinopsis laeticolor
- Clitocybe
- Clitocybe albirhiza
- Clitocybe dealbata: Clitocybe rivulosa
- Clitocybe deceptiva
- Clitocybe flaccida
- Clitocybe fragrans (Description forthcoming)
- Clitocybe glacialis
- Clitocybe inversa: Clitocybe flaccida
- Clitocybe nebularis
- Clitocybe nuda
- Clitocybe odora (Description forthcoming)
- Clitocybe rivulosa
- Clitocybe sclerotoidea
- Clitocybe squamulosa var. montana (Description forthcoming)
- Clitocybe tarda
- Clitocybula abundans (Description forthcoming)
- Clitopilus nitellinus
- Clitopilus prunulus
- Club Coral: Clavariadelphus occidentalis
- Coccoli: Amanita calyptroderma
- Coccora: Amanita calyptroderma
- Collybia acervata: Gymnopus acervatus
- Collybia badiialba: Rhodocollybia badiialba
- Collybia butyracea: Rhodocollybia butyracea
- Collybia cirrhata (Description forthcoming)
- Collybia cookei (Description forthcoming)
- Collybia dryophila: Gymnopus dryophilus
- Collybia racemosa: Dendrocollybia racemosa
- Collybia umbonata: Caulorhiza umbonata
- Coltricia cinnamomea
- Coltricia perennis
- Connopus acervatus
- Conocybe apala
- Conocybe filaris: Pholiotina rugosa
- Conocybe lactea: Conocybe apala
- Conocybe tenera
- Contumyces rosellus
- Coprinellus angulatus
- Coprinellus disseminatus
- Coprinellus flocculosus
- Coprinellus micaceus
- Coprinopsis atramentaria
- Coprinopsis ephemeroides
- Coprinopsis friesii
- Coprinopsis lagopus
- Coprinopsis radiata
- Coprinopsis stercorea
- 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
- Coriolus versicolor: Trametes versicolor
- Cortinarus caperatus (Description forthcoming)
- Cortinarius magnivelatus
- Cortinarius pinguis (Description forthcoming)
- Cortinarius ponderosus
- Cortinarius rubicundulus
- Cortinarius vanduzerensis
- Cortinarius verrucisporus
- Cramp Balls: Annulohypoxylon thouarsianum
- Craterellus cornucopioides
- Craterellus tubaeformis
- Crepidotus crocophyllus (Description forthcoming)
- Crepidotus fimbriatus
- Crepidotus mollis
- Crinipellis piceae (Description forthcoming)
- Crucibulum laeve
- Cryptoporus volvatus
- Cudoniella clavus
- Cuphophyllus pratensis
- Cuphophyllus russocoriaceus
- Cyathus olla
- Cyathus striatus
- Cypress Agaricus: Agaricus lilaceps
- Cystoderma carcharias var. fallax
- Cystoderma fallax: Cystoderma carcharias var. fallax
- Dacrymyces capitatus
- Dacrymyces palmatus
- Dacrymyces stillatus
- Daldinia grandis: Hypoxylon thouarsianum
- Dasyscyphus bicolor (Description forthcoming)
- Dead Man's Foot: Pisolithus tinctorius
- Death Cap: Amanita phalloides
- Deer Mushroom: Pluteus cervinus
- Dendrocollybia racemosa
- Dentinum repandum: Hydnum repandum
- Dentinum umbilicatum: Hydnum umbilicatum
- Descomyces albellus
- Discina perlata
- Donadinia nigrella
- Elaphomyces muricatus
- Elaphomyces granulatus
- Entoloma bloxami
- Entoloma madidum: Entoloma bloxami
- Entoloma holoconiotum
- Entoloma lividoalbum
- Entoloma sericatum (Description forthcoming)
- Entoloma sericellum
- Entoloma vernum (Description forthcoming)
- Exidia glandulosa
- Exidia nucleata
- 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 (Description forthcoming)
- Flammulina velutipes
- Floccularia albolanaripes
- Fly Agaric: Amanita muscaria
- Fomitopsis cajanderi
- Fomitopsis pinicola
- Fried Chicken Mushroom: Lyophyllum decastes
- Funnel Chanterelle: Cantharellus tubaeformis
- Galerina autumnalis: Galerina marginata
- Galerina marginata
- Galeropsis polytrichoides
- Ganoderma applanatum
- Ganoderma brownii (Description forthcoming)
- Ganoderma oregonense (Description forthcoming)
- Garlic mushroom: Marasmius copelandii
- Gastroboletus amyloideus
- Gastroboletus subalpinus
- Gastroboletus turbinatus
- Gautieria monticola (Description forthcoming)
- Gautieria pterosperma (Description forthcoming)
- Geastrum coronatum
- Geastrum floriforme
- Geastrum fornicatum
- Geastrum saccatum
- Geoglossum fallax
- Geopora cooperi
- Geopyxis carbonaria
- Gliophorus psittacinus
- Glomus macrocarpus
- Gomphidius glutinosus (Description forthcoming)
- Gomphidius oregonensis
- Gomphidius subroseus
- Gomphus clavatus
- Gomphus floccosus: Turbinellus floccosus
- Gomphus kauffmanii: Turbinellus kauffmanii
- Grisette: Amanita constricta, Amanita pachycolea, Amanita vaginata
- Gymnopilus luteofolius
- Gymnopilus sapineus
- Gymnopilus spectabilis
- Gymnopus acervatus: Connopus acervatus
- Gymnopus bakerensis (Description forthcoming)
- Gymnopus brassicolens (Description forthcoming)
- Gymnopus dryophilus
- Gymnopus quercophilus
- Gymnopus subpruinosus
- Gymnopus villosipes
- Gyromitra californica: Pseudorhizina californica
- Gyromitra esculenta
- Gyromitra gigas: Gyromitra montana
- Gyromitra infula
- Gyromitra montana
- Handkea
- Handkea fumosa
- Handkea subcretacea
- Handkea utriformis
- Haymaker's mushroom: Panaeolus foenisecii
- Hebeloma crustuliniforme
- Hebeloma mesophaeum
- Hebeloma sinapizans
- Hedgehog: Hydnum repandum, Hydnum umbilicatum
- Helvella acetabulum
- Helvella compressa
- Helvella lacunosa
- Helvella leucomelaena
- Helvella queletii
- Henningsomyces candidus (Description forthcoming)
- Hericium abietis
- Hericium erinaceus
- Hericium ramosum
- Heterotexus alpinus
- Hirschioporus abietinus: Trichaptum abietinum
- Hohenbuehelia atrocaerulea var. grisea: Hohenbuehelia grisea
- Hohenbuehelia grisea
- Hohenbuehelia petaloides
- Honey Mushroom: Armillaria mellea
- Horn of Plenty: Craterellus cornucopioides
- Horse Mushroom: Agaricus arvensis
- Hydnangium carneum
- Hydnellum aurantiacum (Description forthcoming)
- Hydnellum peckii (Description forthcoming)
- Hydnellum scrobiculatum (Description forthcoming)
- Hydnellum suaveolens (Description forthcoming)
- Hydnotrya variiformis
- Hydnum repandum
- Hydnum umbilicatum
- Hygrocybe
- Hygrocybe coccinea
- Hygrocybe conica
- Hygrocybe flavescens
- Hygrocybe flavifolia
- Hygrocybe miniata
- Hygrocybe olivaceoniger
- Hygrocybe psittacina: Gliophorus psittacinus
- Hygrocybe punicea
- Hygrocybe singeri
- Hygrocybe virescens (Description forthcoming)
- Hygrophoropsis aurantiaca
- Hygrophorus agathosmus
- Hygrophorus bakerensis (Description forthcoming)
- Hygrophorus caeruleus
- Hygrophorus chrysodon
- Hygrophorus coccinea: Hygrocybe coccinia
- Hygrophorus conicus: Hygrocybe conica
- Hygrophorus eburneus
- Hygrophorus flavescens: Hygrocybe flavescens
- Hygrophorus goetzii (Description forthcoming)
- Hygrophorus gliocyclus
- Hygrophorus hypothejus
- Hygrophorus miniatus: Hygrocybe miniata
- Hygrophorus pratensis: Camarophyllus pratensis
- Hygrophorus psittacinus: Hygrocybe psittacina
- Hygrophorus pudorinus
- Hygrophorus purpurascens
- Hygrophorus puniceus: Hygrocybe punicea
- Hygrophorus russocoriaceus: Camarophyllus russocoriaceus
- Hygrophorus singeri: Hygrocybe singeri
- Hygrophorous subalpinus
- Hygroscopic Earthstar: Astraeus hygrometricus
- Hymenogaster sublilacinus (Description forthcoming)
- Hymenogaster utriculatus (Description forthcoming)
- Hypholoma
- Hypholoma aurantiaca: Leratiomyces ceres
- Hypholoma capnoides
- Hypholoma fasciculare
- Hypomyces cervinigenus
- Hypomyces chrysospermus
- Hypomyces lactifluorum
- Hypolxylon thouarsianum: Annulohypoxylon thouarsianum
- Hysterangium coriaceum (Description forthcoming)
- Inky Cap: Coprinopsis atramentaria
- Inocybe
- Inocybe adaequata
- Inocybe brunnescens
- Inocybe chelanensis (Description forthcoming)
- Inocybe citrifolia
- Inocybe corydalina
- Inocybe flocculosa (Description forthcoming)
- Inocybe fraudans
- Inocybe geophylla var. geophylla
- Inocybe geophylla var. lilacina
- Inocybe griseolilacina
- Inocybe pudica
- Inocybe sororia
- Inocybe subdestricta
- Jack—O—Lantern: Omphalotus olivascens
- Jahnoporus hirtus
- Jelly Bellies: Leotia lubrica
- Kavinia alboviridis (Description forthcoming)
- King Bolete: Boletus edulis
- Kriegeria alutipes: Chloroscypha alutipe
- Kuehneromyces lignicoloa
- Kuehneromyces vernalis: Kuehneromyces lignicoloa
- Kurotake: Boletopsis grisea
- Laccaria
- Laccaria amethysteo-occidentalis
- Laccaria fraterna
- Laccaria laccata var. pallidifolia
- Lachnellula arida
- Lachnellula calyciformis (Description forthcoming)
- Lachnellula fuscosanguinea (Description forthcoming)
- Lacrymaria lacrymabunda
- Lactarius
- Lactarius alnicola
- Lactarius argillaceifolius var. megacarpus
- Lactarius camphoratus: Lactarius rubidus
- Lactarius deliciosus
- Lactarius fallax
- Lactarius fragilis var. rubidus: Lactarius rubidus
- Lactarius pallescens
- Lactarius pubescens var. betulae
- Lactarius rubidus
- Lactarius rubrilacteus
- Lactarius rubriviridus (Description forthcoming)
- Lactarius xanthogalactus
- Laetiporus conifericola (Description forthcoming)
- Laetiporus gilbertsonii
- Laetiporus sulphureus: Laetiporus gilbertsonii
- Lantern Stinkhorn: Lysurus mokusin
- Leccinum
- Leccinum brunneum (Description forthcoming)
- Leccinum discolor (Description forthcoming)
- Leccinum manzanitae
- Leccinum scabrum
- Lentaria mucida: Multiclavula mucida
- Lentinellus montanus
- Lentinellus ursinus (Description forthcoming)
- Lentinus ponderosus: Neolentinus ponderosus
- Lentinus torulosus: Panus conchatus
- Lenzites betulina
- Leotia lubrica
- Leotia viscosa
- Lepiota atrodisca
- Lepiota cepaestipes: Leucocoprinus cepaestipes
- Lepiota clypeolaria: Lepiota magnispora
- Lepiota castaneidisca
- Lepiota cristata: Lepiota castaneidisca
- Lepiota decorata
- Lepiota lutea: Leucocoprinus birnbaumii
- Lepiota magnispora
- Lepiota naucina: Leucoagaricus leucothites
- Lepiota rachodes: Chlorophyllum brunneum
- Lepiota roseifolia
- Lepiota rubrotinctoides
- Lepiota ventriosospora: Lepiota magnispora
- Lepista nebularis: Clitocybe nebularis
- Lepista nuda: Clitocybe nuda
- Lepista tarda: Clitocybe tarda
- Leratiomyces ceres
- Leratiomyces cucullatus
- Leucoagaricus americanus
- Leucoagaricus barssii
- Leucoagaricus leucothites
- Leucoagaricus naucinus: Leucoagaricus leucothites
- Leucoagaricus rubritinctus: Lepiota rubrotinctoides
- Leucocoprinus birnbaumii
- Leucocoprinus cepaestipes
- Leucogaster rubescens (Description forthcoming)
- Leucopaxillus albissimus
- Leucopaxillus amarus: Leucopaxillus gentianeus
- Leucopaxillus gentianeus
- Leucophleps spinospora (Description forthcoming)
- Lichenomphalia umbellifera (Description forthcoming)
- Lion's Mane: Hericium erinaceus
- Lobster mushroom: Hypomyces lactifluorum
- Longula texensis: Agaricus deserticola
- Lycoperdon curtisii
- Lycoperdon molle
- Lycoperdon nigrescens
- Lycoperdon umbrinum
- Lycoperdon perlatum
- Lycoperdon pusillum: Bovista dermoxantha
- Lycoperdon pyriforme: Morganella pyriformis
- Lyophyllum decastes
- Lysurus mokusin
- Macrocystidia cucumis
- Macrolepiota rachodes: Chlorophyllum brunneum
- Macrotyphula juncea
- Man on Horseback: Tricholoma flavovirens
- Matsutake: Tricholoma magnivelare
- Marasmiellus candidus
- Marasmius
- Marasmius androsaceus
- 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
- Melanoleuca angelesiana
- Melanoleuca evenosa (Description forthcoming)
- Melanoleuca lewisii (Description forthcoming)
- Melanophyllum haematospermum
- Mica Cap: Coprinus micaceus
- Microglossum viride
- Micromphale arbuticola (Description forthcoming)
- Micromphale sequoiae (Description forthcoming)
- Mitrula elegans
- Mniopetalum bryophila: Rimbachia bryophila
- Morchella deliciosa
- Morchella elata
- Morel: Morchella deliciosa, Morchella elata
- Morganella pyriformis
- Mucronella bresadolae
- Mucronella flava
- Multiclavula mucida: Multiclavula vernalis
- Multiclavula vernalis
- Mycena abramsii (Description forthcoming)
- Mycena acicula
- Mycena adonis: Atheniella adonis
- Mycena adscendens
- Mycena amicta
- Mycena aurantiomarginata
- Mycena californiensis
- Mycena capillaripes
- Mycena galericulata
- Mycena galopus (Description forthcoming)
- Mycena griseoviridis: Mycena nivicola
- Mycena haematopus
- Mycena lilacifolia: Chromosera cyanophylla
- Mycena maculata
- Mycena nivicola
- Mycena oregonensis
- Mycena overholtsii
- Mycena pura
- Mycena purpureofusca
- Mycena strobilinoides
- Mycenastrum corium
- Mycetinis copelandii
- Naematoloma aurantiaca: Hypholoma aurantiaca
- Naematoloma capnoides: Hypholoma capnoides
- Naematoloma fasciculare: Hypholoma fasciculare
- Naucoria vinicolor: Tubaria punicea
- Nectria cinnabarina (Description forthcoming)
- Neohygrophorus angelesianus
- Neolentinus ponderosus
- Nidula candida (Description forthcoming)
- Nidula niveotomentosa
- Nivatogastrium nubigenum
- Nolanea holoconiota: Entoloma holoconiotum
- Nolanea verna var. isodiametica: Entoloma vernum
- Octopus Stinkhorn: Clathrus archeri
- Oligoporus caesius (Description forthcoming)
- Oligoporus fragilis
- Oligoporus leucospongia
- Omphalina epichysium: Arrhenia epichysium
- Omphalina ericetorum: Lichenomphalia umbellifera
- Omphalotus olivascens
- Orange Cup: Aleuria aurantia
- Otidea alutacea
- Oyster Mushroom: Pleurotus ostreatus
- Pachylepyrium carbonicola
- Panaeolina foenisecii: Panaeolus foenisecii
- Panaeolus campanulatus: Panaeolus papilionaceus
- Panaeolus foenisecii
- Panaeolus papilionaceus
- Panaeolus retirugis: Panaeolus papilionaceus
- Panaeolus semiovatus
- Panaeolus sphinctrinus: Panaeolus papilionaceus
- Panther: Amanita pantherina
- Panus conchatus
- Parasola auricoma
- Parasola lactea
- Parasola leiocephala: Parasola lactea
- Parasola plicatilis: Parasola lactea
- Parrot Mushroom: Hygrocybe psittacina
- Paxillus involutus
- Paxillus atrotomentosa: Tapinella atrotomentosa
- Paxillus panuoides: Tapinella panuoides
- Peziza ellipsospora
- Peziza repanda
- Peziza vesiculosa
- Peziza violacea
- Phaeoclavulina abietina
- Phaeoclavulina myceliosa
- Phaeocollybia fallax (Description forthcoming)
- Phaeocollybia kauffmanii (Description forthcoming)
- Phaeolus schweinitzii
- Phallus hadriani
- Phellinus gilvus
- Phellinus pomaceus (Description forthcoming)
- Pholiota aurivella (Description forthcoming)
- Pholiota flammans (Description forthcoming)
- Pholiota highlandensis
- Pholiota spumosa
- Pholiota terrestris
- Pholiota velaglutinosa (Description forthcoming)
- Pholiotina rugosa
- Phylloporus rhodoxanthus (Description forthcoming)
- 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 nannfeldtii: Donadinia nigrella
- Pleurotus ostreatus
- Pleurotus petaloides: Hohenbuehelia petaloides
- Plicaria endocarpoides (Description forthcoming)
- Pluteus atromarginatus
- Pluteus cervinus
- Pluteus flavofuligineus
- Pluteus petasatus
- Pluteus pouzarianus
- Poison Pie: Hebeloma crustuliniforme
- Podaxis pistillaris
- Polyozellus multiplex
- Polyporus elegans: Polyporus leptocephalus
- Polyporus leptocephalus
- Polyporus versicolor: Trametes versicolor
- Porcini: Boletus edulis
- Prince: Agaricus augustus
- Protostropharia semiglobata
- Psathyrella candolleana
- Psathyrella corrugis
- Psathyrella echiniceps
- Psathyrella ellenae var. yubaensis (Description forthcoming)
- Psathyrella gracilis: Psathyrella corrugis
- Psathyrella hydrophila: Psathyrella piluliformis
- Psathyrella longipes
- Psathyrella longistriata
- Psathyrella piluliformis
- Pseudobaeospora aphana (Description forthcoming)
- Pseudobaeospora stevensii
- Pseudocoprinus disseminatus: Coprinus disseminatus
- Pseudoclitocybe cyathiformis (Description forthcoming)
- Pseudohydnum gelatinosum
- Pseudoplectania nigrella (Description forthcoming)
- Pseudorhizina californica
- Psilocybe
- Psilocybe coprophila
- Psilocybe cyanescens
- Psilocybe montana
- Psilocybe subviscida
- Puccinia monoica
- Puffball: Bovista dermoxantha, Bovista pila, Bovista plumbea
- Puffball: Calvatia sculpta, Calbovista subsculpta, Lycoperdon perlatum, Lycoperdon nigrescens, Morganella pyriformis
- Puffball: Handkea fumosa, Handkea subcretacea, Handkea utriformis, Vascellum pratense
- Pulveroboletus ravenelii
- Pycnoporellus alboluteus
- Pyrenogaster atrogleba (Description forthcoming)
- Pyronema omphalodes (Description forthcoming)
- Queen Bolete: Boletus regineus
- Radiigera atrogleba: Pyrenogaster atrogleba
- Ramaria abietina: Phaeoclavulina abietina
- Ramaria acrisiccescens (Description forthcoming)
- Ramaria araiospora (Description forthcoming)
- Ramaria botrytis
- Ramaria conjunctipes var. tsugensis (Description forthcoming)
- Ramaria flavigelatinosa (Description forthcoming)
- Ramaria formosa (Description forthcoming)
- Ramaria gelatiniaurantia (Description forthcoming)
- Ramaria myceliosa: Phaeoclavulina myceliosa
- Ramaria rasilispora var. scatesiana
- Ramaria rubricarnata var. verna (Description forthcoming)
- Ramaria sandaracina var. chondrobasis (Description forthcoming)
- Ramaria stricta
- Ramaria violaceibrunnea (Description forthcoming)
- Ramariopsis kunzei
- Redwood Rooter: Caulorhiza umbonata
- Rhizopogon occidentalis
- Rhodocollybia badiialba
- Rhodocollybia butyracea
- Rhodocollybia maculata
- Rhodocybe nitellina: Clitopilus nitellinus
- Rickenella fibula
- Rickenella swartzii
- Rimbachia bryophila
- Rosy Russula: Russula sanguinea
- Rozites caperatus: Cortinarus caperatus (Description forthcoming)
- Rugosomyces onychinus
- Russula
- Russula abietina (Description forthcoming)
- Russula amoenolens
- Russula atroviolacea (Description forthcoming)
- Russula aeruginea (Description forthcoming)
- Russula basifurcata
- Russula brevipes
- Russula cyanoxantha (Description forthcoming)
- Russula densifolia
- Russula dissimulans (Description forthcoming)
- Russula eccentrica
- Russula fragrantissima (Description forthcoming)
- Russula murrillii (Description forthcoming)
- Russula mustelina (Description forthcoming)
- Russula olivacea
- Russula sanguinea
- Russula silvicola
- Russula xerampelina (Description forthcoming)
- Sarcodon imbricatus
- Sarcodon laevigatus (Description forthcoming)
- Sarcoscypha coccinea
- Sarcosoma mexicanum: Urnula padeniana
- Sarcosphaera coronaria
- Scarlet Waxy Cap: Hygrocybe punicea
- Schizophyllum commune
- Scleroderma cepa
- Sclerotinia veratri
- Sculpted puffball: Calvatia sculpta
- Scutellinia scutellata
- Sedecula pulvinata (Description forthcoming)
- Shaggy Mane: Coprinus comatus
- Shaggy Parasol: Chlorophyllum brunneum
- Simocybe centunculus
- Slippery Jack: Suillus pungens
- Snow Mushroom: Gyromitra montana
- Sowerbyella rhenana
- Sparasssis crispa: Sparassis radicata
- Sparassis radicata
- Sphaerobolus stellatus
- Spinellus fusiger
- Split gill: Schizophyllum commune
- Spring Amanita: Amanita velosa
- Stereum hirsutum
- Stereum ochraceo-flavum
- Stinkhorn: Phallus hadriani; Lysurus mokusin
- Strobilurus
- Strobilurus albipitatus
- Strobilurus diminutivus
- Strobilurus trullisatus
- Stropharia
- Stropharia ambigua
- Stropharia coronilla
- Stropharia riparia
- Stropharia semiglobata: Protostropharia semiglobata
- Suillus
- Suillus brevipes
- Suillus caerulescens
- Suillus fuscotomentosus
- Suillus lakei
- Suillus megaporinus
- Suillus ponderosus (Description forthcoming)
- Suillus pungens
- Suillus tomentosus
- Suillus umbonatus
- Suillus volcanalis
- Sulphur Shelf: Laetiporus gilbertsonii
- Sulphur Tuft: Hypholoma fasciculare
- Sweetbread Mushroom: Clitopilus prunulus
- Tapinella atrotomentosa (Description forthcoming)
- Tapinella panuoides
- Tetrapyrgos subdendrophora
- Thaxterogaster pinguis: Cortinarius pinguis
- Thelephora palmata (Description forthcoming)
- Thelephora terrestris (Description forthcoming)
- Thimble Fungus: Verpa conica
- Toothed Jelly Fungus: Pseudohydnum gelatinosum
- Torq: Agaricus bitorquis
- Trametes versicolor
- Tremella aurantia
- Tremella foliacea
- Trappea darkeri (Description forthcoming)
- Tremellodendropsis tuberosa
- Trichaptum abietinum
- Tricharina gilva (Description forthcoming)
- Trichoglossum hirsutum
- Tricholoma
- Tricholoma atroviolaceum
- Tricholoma dryophilum
- Tricholoma equestre
- Tricholoma flavovirens: Tricholoma equestre
- Tricholoma fracticum
- Tricholoma griseoviolaceum
- Tricholoma imbricatum
- Tricholoma inamoenum
- Tricholoma magnivelare
- Tricholoma moseri
- Tricholoma muricatum
- Tricholoma myomyces
- Tricholoma pessundatum: Tricholoma muricatum
- Tricholoma saponaceum
- Tricholoma sejunctum
- Tricholoma vernaticum
- Tricholoma terreum: Tricholoma myomyces
- Tricholomopsis platyphylla: Megacollybia platyphylla
- Tricholomopsis rutilans
- Tubaria confragosa
- Tubaria furfuracea
- Tubaria punicea
- Tuber californicum
- Tuber candidum
- Tuber rufum: Tuber candidum
- Turbinellus floccosus
- Turbinellus kauffmanii (Description forthcoming)
- Turkey Tail: Trametes versicolor
- Tylopilus
- Tylopilus ammiratii (Description forthcoming)
- Tylopilus indecisus
- Tylopilus porphyrosporus
- Tylopilus pseudoscaber: Tylopilus porphyrosporus
- Typhula variabilis (Description forthcoming)
- Tyromyces caesius: Oligoporus caesius
- Tyromyces fragilis: Oligoporus fragilis
- Urnula padeniana
- Velvet foot: Flammulina velutipes
- Vascellum pratense
- Veluticeps fimbriata (Description forthcoming)
- Verpa conica
- Volvariella speciosa: Volvopluteus gloiocephalus
- Volvopluteus gloiocephalus
- Weraroa cucullata: Leratiomyces cucullatus
- Western Grisette: Amanita pachycolea
- White Chanterelle: Cantharellus subalbidus
- Witch's Butter: Tremella aurantia, Dacrymyces palmatus
- Witch's Hat: Hygrocybe conica, Hygrocybe singeri
- Wooly Chanterelle: Gomphus floccosus
- Xerocomellus chrysenteron
- Xerocomellus truncatus
- Xerocomellus zelleri
- Xerocomus subtomentosus
- Xeromphalina campanella
- Xeromphalina cauticinalis (Description forthcoming)
- Xylaria hypoxylon
- Yellow Chanterelle: Cantharellus cibarius
- Yellow Foot: Cantharellus tubaeformis
- Yellow Morel: Morchella deliciosa
- Yellow Stainer: Agaricus xanthodermus