Fabaceae(legume family)
Fabales
Fabeae(monophyly uncertain)
Facklamia
Faecalibacterium
Fagaceae(beech or oak family)
Fagales
Fagelia
Fagepauropus
Fagesia
Faginidae
Fagniezia
Faksephyllia(EXTINCT)
Falagonia
Falagonilla
Falagria
Falagriini
Falagrioma
Falagriota
Falcatoflabellum
Falcileptoneta
Falcipennis(Siberian Grouse and Spruce Grouse)
F-canadensis(Spruce Grouse)
F-falcipennis(Siberian Grouse)
Falcivibrio
Falco
F-alopex(fox kestrel)
F-amurensis(Amur falcon)
F-araea(Seychelles kestrel)
F-ardosiaceus(grey kestrel)
F-berigora(brown falcon)
F-biarmicus(lanner falcon)
F-cenchroides(Australian kestrel)
F-cherrug(saker falcon)
F-chicquera(red-necked falcon)
F-columbarius(merlin)
F-concolor(sooty falcon)
F-cuvieri(African hobby)
F-deiroleucus(orange-breasted falcon)
F-dickinsoni(Dickinson's kestrel)
F-eleonorae(Eleonora's falcon)
F-fasciinucha(taita falcon)
F-femoralis(Aplomado Falcon)
F-hypoleucos(grey falcon)
F-jugger(laggar falcon)
F-longipennis(Australian hobby)
F-mexicanus(prairie falcon)
F-moluccensis(spotted kestrel)
F-naumanni(lesser kestrel)
F-newtoni(Madagascan kestrel)
F-novaezeelandiae(New Zealand falcon)
F-pelegrinoides(barbary falcon)
F-peregrinus(peregrine falcon)
F-punctatus(Mauritius kestrel)
F-rufigularis(bat falcon)
F-rupicoloides(greater kestrel)
F-rusticolus(gyrfalcon)
F-severus(oriental hobby)
F-sparverius(American kestrel)
F-subbuteo(Eurasian falcon)
F-subniger(black falcon)
F-tinnunculus(common kestrel)
F-vespertinus(red-footed falcon)
F-zoniventris(banded kestrel)
Falconidae(falcons) (incertae sedis)
Falconiformes(diurnal birds of prey) (monophyly uncertain)
Falcopaussus
Falcunculus(shrike-tit)
Falga
F-farina
F-jeconia
F-sciras
F-theoclea
Falkocholeva
Falkonemadus
Fallicambarus
F-(Creaserinus)
FC-burrisi
FC-byersi
FC-caesius
FC-danielae
FC-fodiens
FC-gilpini
FC-gordoni
FC-hedgpethi
FC-hortoni
FC-oryktes
FC-uhleri
F-(Fallicambarus)
FF-devastator
FF-dissitus
FF-harpi
FF-jeanae
FF-macneesei
FF-petilicarpus
FF-strawni
Falsophrixothrix
Fanniidae
Fanoridius
Faronidiellus
Faronidius
Faronitae
Faronites
Faronitopsis
Faronoma
Faronus
Fashenglianus
F-albimaculatus
Fastigitermes
Faunis
F-aerope
F-canens
F-eumeus
F-gracilis
F-kirata
F-menado
F-phaon
F-sappho
F-stomphax
Faunula
F-leucoglene
F-patagonica
Fauriellidae
Fauva
Faviidae
Faviina
Favioidea
Faxilla
Faxonella
F-beyeri
F-blairi
F-clypeata
F-creaseri
Fedia
Fedtschenkiinae
Felda
Feldini
Felicena
F-dirpha
F-dora
Felicola
Felidae(cats)
Feliformia
Felsina
Feluva
Femoracoelotes
Fenderia
Fenderiini
Fenestrata
Fenhoryx(EXTINCT)
Fenyesia
Feostoma irregulare
Fergusoninidae
Fernanstiba
Feroniola
Feronista(monophyly uncertain)
F-amaroides
F-minor
Ferosagitta
F-americana
F-ferox
F-galerita
F-hispida
F-madhupratapi
F-robusta
F-siamensis
F-tokiokai
Fervidobacterium
Festucula
Fibrobacter intestinalis
Fibrobacter succinogenes
FS-elongatus
FS-succinogenes
Fibrobacteres(cellulose digesting, anaerobic rumen bacteria)
Ficalhoa laurifolia
Ficoidea
Fideliinae
Figitidae
Fijiastes
Fijivirus
Filibacter
Filicopsida(ferns)
Filientomon
Filifactor
Filigerinus
Filigerodes
Filinia
Filiniidae
Filistatidae
Filobacillus
Filobasidiales
Filospermoidea
Filoviridae
Finegoldia
Fioririidae
Firmicus
Firmicutes(low G+C Gram positives)
Firmitermes
FiroloidaLesueur 1817
Fischerella
Fisiphila
Fissocatops
Fistulaster
Fjellbergella
Flabellidae
Flabelloidea
Flabellum
Flaccilla
Flaccisagitta
F-adenensis
F-enflata
F-hexaptera
Flagellariaceae
Flagellated strains(CCMP621, CCMP 242, CCMP 1239, CCMP 1258)
Flagellopaussus
Flammeovirga
Flatidae
Flaviviridae
Flavobacterium
Flectobacillus
Flectonotus
Fletcherexius
Flexibacter
Flexibilia(EXTINCT)
Flexistipes
Flexithrix
Flexiviridae
Flohria
Floridatragulinae(EXTINCT)
Floridatragulus(EXTINCT)
Florideophyceae
Floridobolidae
Floridoxenos monroensis
Floscularia
Flosculariacea
Flosculariidae
Flosmaris
F-phellioidesStephenson 1920
Fluda
F-angulosa
F-araguae
F-elata
F-goianiae
F-inpae
F-minuta
F-narcissa
F-nigritarsis
F-opica
F-perdita
F-princeps
F-ruficeps
F-usta
Foetterleia
Folioceros
Folivora
Fonsechellus
Fontanesia
Fonticula(a genus of slime-mould-like protists)
Foraminitermes
Foraminitermes group
Forbestra
F-equicola
F-olivencia
Forcipulatacea
Forcipulatida
Forda
Fordinae
Fordini
Forelius
F-albiventris
F-analis
F-andinus
F-bahianus
F-brasiliensis
F-breviscapus
F-chalybaeus
F-grandis
F-kieferi
F-lilloi
F-macrops
F-maranhaoensis
F-mccooki
F-minor
F-nigriventris
F-pruinosus
F-pusillus
F-rubriceps
F-rufus
Forelophilus overbecki
Forestiera
Forficulina
Forficulitermes
Forinus
Foriria(EXTINCT)
Formica(wood ants, etc.) (monophyly uncertain)
Formicariidae part 1(antpittas)
Formicariidae part 2(ant-thrushes)
Formicidae(ants)
Formicinae(weaver ants, carpenter ants, etc.)
Formicini(wood ants, etc.)
Formicium(EXTINCT)
F-berryi(EXTINCT)
F-brodiei(EXTINCT)
F-giganteum(EXTINCT)
F-mirabile(EXTINCT)
F-simillimum(EXTINCT)
Formicocephalus
Formicoxenini
Formicoxenus
F-chamberlini
F-diversipilosus
F-hirticornis
F-nitidulus
F-provancheri
F-quebecensis
F-sibiricus
Forsterinaria
F-anophthalma
F-antje
F-boliviana
F-coipa
F-difficilis
F-enjuerma
F-falcata
F-guaniloi
F-inornata
F-itatiaia
F-necys
F-neonympha
F-pallida
F-pichita
F-pilosa
F-proxima
F-pseudinornata
F-punctata
F-pyrczi
F-quantius
F-rotunda
F-rustica
F-stella
Forsythia
Fosshageniidae
Fossiger
Fossil Caprinae(EXTINCT) (non-monophyletic)
Fossil Reduncinae(EXTINCT) (non-monophyletic)
Fossulopora
Fountainea
F-centaurus
F-eurypyle
F-glycerium
F-halice
F-nessus
F-nobilis
F-ryphea
F-sosippus
Fouquea(EXTINCT)
Fouqueidae(EXTINCT)
Fouquieriaceae
Four-circlet crinoids(non-monophyletic)
Foveolocyathus
Foveoscapha
Francolinus(Black Francolin and relatives)
F-francolinus(Black Francolin)
F-gularis(Swamp Francolin)
F-pictus(Painted Francolin)
F-pintadeanus(Chinese Francolin)
F-pondicerianus(Grey Francolin)
Franimorpha(EXTINCT)
Frankenia
Frankia
Frankineae
Franwalkeria
Franzidota
Franziotus
Franzorella
Fratiidae
Fraus
F-basicornis
F-basidispina
F-bilineata
F-biloba
F-crocea
F-distispina
F-furcata
F-fusca
F-griseomaculata
F-latistria
F-linogyna
F-marginispina
F-mediaspina
F-megacornis
F-minima
F-nanus
F-orientalis
F-pelagia
F-pilosa
F-polyspila
F-pteromela
F-quadrangular
F-serrata
F-simulans
F-tedi
Fraxinus
"Free-embolus group"
Freemaniana rawlinsi
Fregata andrewsi(Christmas Frigatebird)
Fregata aquila(Ascension Frigatebird)
Fregata ariel(Lesser Frigatebird)
Fregata magnificens(Magnificent Frigatebird)
Fregata minor(Great Frigatebird)
Fregatidae(frigate-birds)
Frescocyathus(EXTINCT)
Fresna
F-carlo
F-cojo
F-maesseni
F-netopha
F-nyassae
Freya
F-albosignata
F-ambigua
F-arraijanica
F-bicava
F-bicavata
F-bifida
F-bifurcata
F-chinopogn
F-decorata
F-demarcata
F-disparipes
F-distincta
F-dyali
F-emarginata
F-exculta
F-frontalis
F-grisea
F-guianensis
F-infuscata
F-justina
F-longispina
F-maculatipes
F-minuta
F-nannispina
F-perelegans
F-petrunkevitchi
F-prominens
F-regia
F-rufohirta
F-rustica
F-sagittifera
F-simplicicava
F-strandi
Friedmanniella
Frieseinae
Frigga
F-coronigera
F-crocuta
F-finitima
F-flava
F-kessleri
F-opulenta
F-pratensis
F-quintensis
F-rufa
F-simoni
Frigoribacterium
Fringillidae(finches)
Frisonia
Fritziana
Froggattella
F-kirbii
F-latispina
Frutillariotes
Fuchsieae
Fuentes
Fujientomon
F-dicestum
F-primum
Fulcinia
F-alaris
F-exilis
F-punctipes
F-uxor
Fulciniella
F-infumata
F-loriae
F-verticalis
Fulcinini
Fulciniola snelleni
Fulda
F-australis
F-bernieri
F-coroller
F-gatiana
F-imorina
F-lucida
F-pauliani
F-rhadama
Fulgoridae
Fulgoromorpha(planthoppers)
Fulica(Red-knobbed Coot and relatives)
F-alai(Hawaiian Coot)
F-americana(American Coot)
F-ardesiaca(Andean Coot)
F-armillata(Red-gartered Coot)
F-atra(Eurasian Coot)
F-caribaea(Caribbean Coot)
F-cornuta(Horned Coot)
F-cristata(Red-knobbed Coot)
F-gigantea(Giant Coot)
F-leucoptera(White-winged Coot)
F-rufifrons(Red-fronted Coot)
Fulleritermes
Fulleroxenus
Funambulini(palm squirrels)
Funariales(incertae sedis)
Fungi(mushrooms, sac fungi, yeast, molds, rusts, smuts, etc.)
Fungiacyathidae
Fungiidae
Fungiina
Fungioidea
Funisciurina(striped squirrels and African bush squirrels)
Funisciurus
Furcaperla
Furculitermes
Furipteridae(Thumbless Bats)
Furnarii(ovenbirds, antbirds, and relatives)
F-dae(ovenbirds) (non-monophyletic)
Furovirus
Fuselloviridae
Fusi
Fusibacter
Fusobacteria(anaerobic heterotrophs, many involved in human infections)
Fusobacterium
Fustiger
Fustigerillus
Fustigerinus
Fustigerodes
Fustigeromimus
Fustigeropsis
fergana-group
flavipedes group
formicine tribe group
formicoxenine tribe group(monophyly uncertain)
furcatus group