Fungal genera: Fabraea [12 taxa], Fabrella [1 taxon], Fairmaniella [28 taxa], Falcispora [2 taxa], Falcocladium [1 taxon], Farlowiella [7 taxa], Farysia [67 taxa], Fasciatispora [1 taxon], Favolaschia [83 taxa], Favolus [1 taxon], Favolus [143 taxa], Favostroma [1 taxon], Favotrichophyton [2 taxa], Fayodia [5 taxa], Fellhanera [55 taxa], Feltgeniomyces [1 taxon], Femsjonia [8 taxa], Fenestella [28 taxa], Fennellia [251 taxa], Fennellomyces [1 taxon], Ferrarisia [7 taxa], Fibricium [4 taxa], Fibroporia [1 taxon], Fibulochlamys [1 taxon], Fibulocoela [4 taxa], Fibulomyces [9 taxa], Fibuloporia [1 taxon], Filoboletus [13 taxa], Filosporella [5 taxa], Fimaria [22 taxa], Fimetariella [5 taxa], Fissurina [59 taxa], Fistulina [104 taxa], Fistulinella [5 taxa], Flabellospora [14 taxa], Flagelloscypha [10 taxa], Flagellospora [49 taxa], Flakea [1 taxon], Flaminia [1 taxon], Flammula [52 taxa], Flammulaster [1 taxon], Flammulina [166 taxa], Flaviporus [7 taxa], Flavocetraria [8 taxa], Flavocetrariella [7 taxa], Flavodon [72 taxa], Flavoparmelia [54 taxa], Flavopunctelia [20 taxa], Flavoscypha [2 taxa], Fleischhakia [1 taxon], Floccularia [2 taxa], Flosculomyces [11 taxa], Fluviostroma [5 taxa], Fomes [823 taxa], Fominia [1 taxon], Fomitella [25 taxa], Fomitiporia [3 taxa], Fomitopsis [683 taxa], Fontanospora [1 taxon], Foveostroma [2 taxa], Fracchiaea [12 taxa], Fragosoa [1 taxon], Fragosphaeria [4 taxa], Frankiella [1 taxon], Frankiella [2 taxa], Franzpetrakia [1 taxon], Fraserula [1 taxon], Frommeëlla [3 taxa], Frommea [1 taxon], Fujimyces [14 taxa], Fulgensia [3 taxa], Fuligo [225 taxa], Fuligomyces [1 taxon], Fulvia [92 taxa], Fulvidula [1 taxon], Fulvifomes [22 taxa], Fumago [180 taxa], Funalia [11 taxa], Furcaspora [8 taxa], Fusamen [1 taxon], Fusariella [35 taxa], Fusarium [4291 taxa], Fuscidea [4 taxa], Fuscocerrena [12 taxa], Fuscopannaria [28 taxa], Fuscophialis [17 taxa], Fuscoporella [4 taxa], Fuscoporia [177 taxa], Fusella [2 taxa], Fusichalara [1 taxon], Fusicladiopsis [1 taxon], Fusicladium [163 taxa], Fusicoccum [121 taxa], Fusidium [3 taxa], Fusisporium [7 taxa], Fusoma [7 taxa], Fusticeps [1 taxon]