Associated organism genera: Faba [12 taxa], Fabiana [2 taxa], Fadogia [10 taxa], Fagara [50 taxa], Fagopyrum [55 taxa], Fagraea [8 taxa], Fagus [2458 taxa], Falcaria [217 taxa], Falcipennis [5 taxa], Fallopia [63 taxa], Faramea [17 taxa], Farlowiella [2 taxa], Farsetia [1 taxon], Fatsia [3 taxa], Faurea [16 taxa], Favolaschia [1 taxon], Favolus [5 taxa], Feijoa [21 taxa], Felis [11 taxa], Feltgeniomyces [1 taxon], Fenestraria [1 taxon], Fennellia [7 taxa], Feretia [1 taxon], Feronia [9 taxa], Feronia [1 taxon], Ferraria [3 taxa], Ferrarisia [2 taxa], Ferrisicoccus [2 taxa], Ferula [18 taxa], Ferulago [2 taxa], Festuca [283 taxa], Fevillea [9 taxa], Fezia [1 taxon], Fibigia [4 taxa], Ficaria [93 taxa], Ficus [1328 taxa], Fidicina [2 taxa], Fieldia [3 taxa], Filago [4 taxa], Filicium [3 taxa], Filipendula [160 taxa], Fimbriaria [1 taxon], Fimbristylis [141 taxa], Fingerhuthia [6 taxa], Firmiana [11 taxa], Fischeria [16 taxa], Fissicalyx [2 taxa], Fitzroya [20 taxa], Flabellaria [1 taxon], Flacourtia [41 taxa], Flammulina [2 taxa], Flaveria [2 taxa], Flavobacterium [1 taxon], Flavocetraria [1 taxon], Flavocetrariella [1 taxon], Flavoparmelia [10 taxa], Flemingia [37 taxa], Fleurya [2 taxa], Flindersia [1 taxon], Flotovia [6 taxa], Flourensia [3 taxa], Flueggea [19 taxa], Foeniculum [75 taxa], Fomes [17 taxa], Fomitopsis [6 taxa], Fontanesia [1 taxon], Forchhammeria [2 taxa], Forestiera [5 taxa], Forsteronia [9 taxa], Forsythia [65 taxa], Fortunella [3 taxa], Fothergilla [1 taxon], Foveostroma [2 taxa], Fragaria [406 taxa], Francoa [6 taxa], Francolinus [2 taxa], Frangula [276 taxa], Frankenia [4 taxa], Franklandia [1 taxon], Franseria [1 taxon], Frasera [1 taxon], Fraserula [2 taxa], Fraxinus [1424 taxa], Freesia [20 taxa], Fritillaria [5 taxa], Frullania [1 taxon], Fuchsia [23 taxa], Fucus [13 taxa], Fuirena [36 taxa], Fulgensia [1 taxon], Fuligo [10 taxa], Fulvia [8 taxa], Fumago [8 taxa], Fumaria [14 taxa], Funaria [3 taxa], Funastrum [3 taxa], Funtumia [35 taxa], Furcaspis [2 taxa], Furcraea [31 taxa], Fusariella [2 taxa], Fusarium [231 taxa], Fuscophialis [6 taxa], Fuscoporia [2 taxa], Fusicladium [21 taxa], Fusidium [1 taxon], Fusoma [1 taxon]