Bactridium flavum
Badhamia affinis
Badhamia capsulifera
Badhamia foliicola
Badhamia macrocarpa
Badhamia nitens
Badhamia panicea
Badhamia utricularis
Baeospora myosura
Bald Cavalier
Bald Inkcap
Banded Amanita
Banded Mottlegill
Bark Bonnet
Barley Covered Smut
Barley Loose Smut
Basidioradulum radula
Bauhinus cordae
Bay Bolete
Bay Cup
Bay Polypore
Beaked Earthstar
Bearded Dapperling
Bearded Milkcap
Bearded Seamine
Beauveria bassiana
Bedstraw Smut
Beech Barkspot
Beech Jellydisc
Beech Knight
Beech Milkcap
Beech Tarcrust
Beech Woodwart
Beechleaf Bonnet
Beechmast Candlesnuff
Beechwood Sickener
Beefsteak Fungus
Beige Bonnet
Beige Coral
Beige Fibrecap
Belonidium mollissimum
Belonidium sulphureum
Bent Brittlestem
Benzoin Bracket
Berlesiella nigerrima
Bertia moriformis
Bertia moriformis var. moriformis
Biatoropsis usnearum
Bicoloured Deceiver
Big Bellied Webcap
Big Blue Pinkgill
Big Slateblue Pinkgill
Big Smoky Bracket
Bionectria ralfsii
Birch Amanita
Birch Bark Stripper
Birch Besom
Birch Blackhead
Birch Brittlegill
Birch Cup
Birch Knight
Birch Mazegill
Birch Milkcap
Birch Poisonpie
Birch Polypore
Birch Rust
Birch Webcap
Birch Woodwart
Biscogniauxia nummularia
Bishop's Inkcap
Bisifusarium dimerum
Bispora antennata
Bisporella citrina
Bisporella resinicola
Bisporella subpallida
Bisporella sulfurina
Biting Webcap
Bitter Almond Brittlegill
Bitter Beech Bolete
Bitter Bolete
Bitter Bracket
Bitter Chocolate Rust
Bitter Knight
Bitter Oysterling
Bitter Poisonpie
Bitter Waxcap
Bitter Webcap
Bittersweet Fibrecap
Bjerkandera adusta
Bjerkandera fumosa
Black Bulgar
Black Magic
Black Milking Bonnet
Black Morel
Black Tooth
Black Velvet
Blackboot Fibrecap
Blackedge Bonnet
Blackedge Pinkgill
Blackedged Shield
Blackening Brittlegill
Blackening Waxcap
Blackfoot Polypore
Blackish Pinkgill
Blackthorn Dotty
Blackthorn Rust
Blaeberry Redleaf
Bleach Cup
Bleached Brittlegill
Bleeding Bonnet
Bleeding Broadleaf Crust
Bleeding Conifer Crust
Bleeding Oak Crust
Bleeding Porecrust
Blistered Cup
Blond Inkcap
Bloodred Webcap
Bloody Brittlegill
Blue Band Brittlegill
Blue Edge Pinkgill
Blue Roundhead
Blue Scaly Pinkgill
Blue Spot Knight
Blue Tooth
Bluebell Rust
Blue-edge Pinkgill
Bluefoot Bolete
Blue-Girdled Pinkgill
Blue-Girdled Webcap
Bluegreen Pinkgill
Blueing Bracket
Blueleg Brownie
Blueleg Pinkgill
Blumeria graminis s. lat.
Blunt Webcap
Blusher
Blushing Bolete
Blushing Bracket
Blushing Crust
Blushing Dapperling
Blushing Fibrecap
Blushing Milkcap
Blushing Pinkgill
Blushing Rosette
Blushing Waxcap
Blushing Webcap
Blushing Wood Mushroom
Boeremia exigua var. exigua
Boeremia hedericola
Bog Beacon
Bog Bell
Bog Bolete
Bog Jellydisc
Bog Navel
Bog Shadow
Bog Waxcap
Bolbitius reticulatus
Bolbitius titubans
Bolbitius titubans var. titubans
Bolete Mould
Boletus aestivalis
Boletus badius
Boletus calopus
Boletus chrysenteron
Boletus cisalpinus
Boletus communis
Boletus declivitatum
Boletus edulis
Boletus erythropus
Boletus ferrugineus
Boletus fragrans
Boletus impolitus
Boletus lanatus
Boletus luridus
Boletus parasiticus
Boletus porosporus
Boletus pruinatus
Boletus pulverulentus
Boletus queletii
Boletus radicans
Boletus rhodoxanthus
Boletus rubellus
Boletus satanas
Boletus subtomentosus
Bonfire Cauliflower
Bonfire Greyling
Bonfire Scalycap
Bonfire Swarmer
Bonnet Mould
Bonomyces sinopicus
Botryobasidium conspersum
Botryobasidium isabellinum
Botryobasidium vagum
Botryohypochnus isabellinus
Botryosphaeria stevensii
Botryosporium pulchrum
Botryotinia calthae
Botrytis aclada
Botrytis allii
Botrytis calthae
Botrytis cinerea
Botrytis elliptica
Botrytis fascicularis
Botrytis tulipae
Bovine Bolete
Bovista dermoxantha
Bovista nigrescens
Bovista plumbea
Bowl Hoodie
Box Rust
Brachysporium bloxamii
Brachysporium britannicum
Bracken Club
Bracken Horncrust
Bracken Map
Bracken Swarmer
Branched Shanklet
Branching Oyster
Brassica Powdery Mildew
Brefeldia maxima
Bremia centaureae
Bremia lactucae s. str.
Bremia sonchicola
Bremia stellata
Bremia tulasnei
Brevicellicium olivascens
Briancoppinsia cytospora
Briar Disco
Brick Tuft
Bristled Parachute
Brittle Cinder
Britzelmayria multipedata
Brown Birch Bolete
Brown Brain
Brown Cup
Brown Ear
Brown Mottlegill
Brown Parasol
Brown Puffball
Brown Rollrim
Brown Webcap
Brownedge Bonnet
Brownedge Pinkgill
Browngilled Conecap
Brownish Conecap
Bruised Webcap
Bruising Porecrust
Bruising Webcap
Brunnipila calycioides
Brunnipila calyculiformis
Brunnipila clandestina
Brunnipila fuscescens
Brunnipila palearum
Bryoscyphus dicrani
Bubblegum Pinkgill
Buchwaldoboletus lignicola
Buckskin Webcap
Budding Jellydisc
Buglossoporus quercinus
Bulbiferous Crust
Bulbillomyces farinosus
Bulbomollisia stromatica
Bulbous Bonnet
Bulbous Fibrecap
Bulbous Honey Fungus
Bulbous Webcap
Bulgaria inquinans
Bulging Bracket
Burdock Mildew
Burgundy Pinkgill
Burgundydrop Bonnet
Burnet Rose Rust
Burnt Knight
Burnt Orange Webcap
Butter Cap
Butter Scalycap
Butter Waxcap
Butterscotch Waxcap
Butterycups
Butyriboletus appendiculatus
Butyriboletus fuscoroseus
Bypassed Brittlegill
Byssocorticium atrovirens
Byssocorticium efibulatum
Byssomerulius corium
Byssonectria deformis
Byssonectria fusispora
Byssonectria terrestris
Byssostilbe stilbigera