Pilzgattungen: 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 [2 Taxa], Frankiella [1 Taxon], 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]