| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| FABIA | Fabiana Ruiz & Pavon | fabiana | Solanaceae
|
| FACIB | Fabronia ciliaris (Brid.) Brid. var. bartramii (Grout) Grout | Fabronia ciliaris var. ciliaris | Fabroniaceae
|
| FACIC | Fabronia ciliaris (Brid.) Brid. var. ciliaris | fabronia moss | Fabroniaceae
|
| FACIO | Fabronia ciliaris (Brid.) Brid. var. ovata (Grout) Grout | Fabronia ciliaris var. ciliaris | Fabroniaceae
|
| FACIP | Fabronia ciliaris (Brid.) Brid. var. polycarpa (Hook.) Buck | fabronia moss | Fabroniaceae
|
| FACIW | Fabronia ciliaris (Brid.) Brid. var. wrightii (Sull.) Buck | Wright's fabronia moss | Fabroniaceae
|
| FACI2 | Fabronia ciliaris (Brid.) Brid. | fabronia moss | Fabroniaceae
|
| FADO | Fabronia donnellii Aust. | Donnellia commutata | Sematophyllaceae
|
| FAGY | Fabronia gymnostoma Sull. & Lesq. in Sull. | Fabronia ciliaris var. ciliaris | Fabroniaceae
|
| FAIM2 | Fabronia imperfecta Sharp | Fabronia ciliaris var. ciliaris | Fabroniaceae
|
| FAIO | Fabronia iowensis Cav. | Fabronia ciliaris var. ciliaris | Fabroniaceae
|
| FAPU | Fabronia pusilla Raddi | fabronia moss | Fabroniaceae
|
| FARA | Fabronia ravenelii Sull. | Fabronia ciliaris var. polycarpa | Fabroniaceae
|
| FAWRI | Fabronia wrightii Sull. var. intermedia Grout | Fabronia ciliaris var. wrightii | Fabroniaceae
|
| FAWR | Fabronia wrightii Sull. | Fabronia ciliaris var. wrightii | Fabroniaceae
|
| FABRO | Fabronia Raddi | fabronia moss | Fabroniaceae
|
| FAAP | Facelis apiculata Cass. | Facelis retusa | Asteraceae
|
| FARE | Facelis retusa (Lam.) Schultz-Bip. | annual trampweed | Asteraceae
|
| FACEL | Facelis Cass. | trampweed | Asteraceae
|
| FAHO | Fadyenia hookeri (Sweet) Maxon | dotted fern | Dryopteridaceae
|
| FADYE | Fadyenia Hook. | dotted fern | Dryopteridaceae
|
| FACAL | Fagonia californica Benth. ssp. laevis (Standl.) Wiggins | Fagonia laevis | Zygophyllaceae
|
| FACAG | Fagonia californica Benth. var. glutinosa Vail | Fagonia pachyacantha | Zygophyllaceae
|
| FACAL2 | Fagonia californica Benth. var. laevis (Standl.) L. Benson | Fagonia laevis | Zygophyllaceae
|
| FACAL3 | Fagonia californica Benth. var. longipes (Standl.) L. Benson | Fagonia laevis | Zygophyllaceae
|
| FALA | Fagonia laevis Standl. | California fagonbush | Zygophyllaceae
|
| FALO | Fagonia longipes Standl. | Fagonia laevis | Zygophyllaceae
|
| FAPA2 | Fagonia pachyacantha Rydb. | sticky fagonbush | Zygophyllaceae
|
| FAGON | Fagonia L. | fagonbush | Zygophyllaceae
|
| FAES2 | Fagopyrum esculentum Moench | buckwheat | Polygonaceae
|
| FAFA | Fagopyrum fagopyrum (L.) Karst. | Fagopyrum esculentum | Polygonaceae
|
| FASA | Fagopyrum sagittatum Gilib. | Fagopyrum esculentum | Polygonaceae
|
| FATA | Fagopyrum tataricum (L.) Gaertn. | Tartary buckwheat | Polygonaceae
|
| FAVU2 | Fagopyrum vulgare Hill | Fagopyrum esculentum | Polygonaceae
|
| FAGOP2 | Fagopyrum P. Mill. | buckwheat | Polygonaceae
|
| FRBE3 | Fagraea berteriana A. Gray ex Benth. | | Loganiaceae
|
| FAGRA | Fagraea Thunb. | | Loganiaceae
|
| FAAM | Fagus americana Sweet | Fagus grandifolia | Fagaceae
|
| FAFE | Fagus ferruginea Aiton | Fagus grandifolia | Fagaceae
|
| FAGRH | Fagus grandifolia Ehrh. ssp. heterophylla Camp | Fagus grandifolia | Fagaceae
|
| FAGRC | Fagus grandifolia Ehrh. var. caroliniana (Loud.) Fern. & Rehd. | Fagus grandifolia | Fagaceae
|
| FAGR | Fagus grandifolia Ehrh. | American beech | Fagaceae
|
| FASYA | Fagus sylvatica L. var. atropunicea Weston | Fagus sylvatica | Fagaceae
|
| FASY | Fagus sylvatica L. | European beech | Fagaceae
|
| FAGUS | Fagus L. | beech | Fagaceae
|
| FAAL | Faidherbia albida (Del.) A. Chev. | applering acacia | Fabaceae
|
| FAIDH | Faidherbia A. Chev. | acacia | Fabaceae
|
| FASI2 | Falcaria sioides (Wibel) Aschers. | Falcaria vulgaris | Apiaceae
|
| FAVU | Falcaria vulgaris Bernh. | sickleweed | Apiaceae
|
| FALCA | Falcaria Fabr. | falcaria | Apiaceae
|
| FACO2 | Falcata comosa (L.) Kuntze | Amphicarpaea bracteata var. comosa | Fabaceae
|
| FAPI | Falcata pitcheri (Torr. & Gray) Kuntze | Amphicarpaea bracteata var. comosa | Fabaceae
|
| FAMO | Falcataria moluccana (Miquel) Barneby & Grimes | peacocksplume | Fabaceae
|
| FALCA2 | Falcataria (Nielsen) Barneby & Grimes | peacocksplume | Fabaceae
|
| FAAU | Fallopia aubertii (Henry) Holub | Polygonum aubertii | Polygonaceae
|
| FABA | Fallopia baldschuanica (Regel) Holub | Polygonum baldschuanicum | Polygonaceae
|
| FACI | Fallopia cilinodis (Michx.) Holub | Polygonum cilinode | Polygonaceae
|
| FACO | Fallopia convolvulus (L.) A. L�ve | Polygonum convolvulus var. convolvulus | Polygonaceae
|
| FAJA2 | Fallopia japonica (Houtt.) Dcne. | Polygonum cuspidatum | Polygonaceae
|
| FASA3 | Fallopia sachalinensis (F. Schmidt ex Maxim.) Dcne. | Polygonum sachalinense | Polygonaceae
|
| FASC | Fallopia scandens (L.) Holub | Polygonum scandens var. scandens | Polygonaceae
|
| FAPA | Fallugia paradoxa (D. Don) Endl. ex Torr. | Apache plume | Rosaceae
|
| FALLU | Fallugia Endl. | Apache plume | Rosaceae
|
| FAPO | Faradaya powellii Seem. ex Powell | | Verbenaceae
|
| FARAD | Faradaya F. Muell. | | Verbenaceae
|
| FAOC | Faramea occidentalis (L.) A. Rich. | false coffee | Rubiaceae
|
| FARAM | Faramea Aubl. | false coffee | Rubiaceae
|
| FAHY | Farnoldia hypocrita (A. Massal.) Froberg | | Porpidiaceae
|
| FAJU | Farnoldia jurana (Schaerer) Hertel | | Porpidiaceae
|
| FAMI | Farnoldia micropsis (A. Massal.) Hertel | | Porpidiaceae
|
| FARNO | Farnoldia Hertel | farnoldia | Porpidiaceae
|
| FAVI | Fatoua villosa (Thunb.) Nakai | hairy crabweed | Moraceae
|
| FATOU | Fatoua Gaud. | fatoua | Moraceae
|
| FAHO2 | Fatsia horrida (Smith) Benth. & Hook. f. ex Brewer & S. Watson | Oplopanax horridus | Araliaceae
|
| FAJA | Fatsia japonica (Thunb.) Decne. & Planchon | paperplant | Araliaceae
|
| FATSI | Fatsia Decne. & Planchon | fatsia | Araliaceae
|
| FACR | Fauria crista-galli (Menzies ex Hook.) Makino | Nephrophyllidium crista-galli | Menyanthaceae
|
| FALE | Fayodia leucophylla (A. Gillet) M. T. Lange | | Tricholomataceae
|
| FAST | Fayodia striatula (Kuhner) Singer | | Tricholomataceae
|
| FAYOD | Fayodia Kuhner | fayodia | Tricholomataceae
|
| FESE2 | Feijoa sellowiana (O. Berg) O. Berg | feijoa | Myrtaceae
|
| FEIJO | Feijoa O. Berg | feijoa | Myrtaceae
|
| FEAU3 | Fellhanera aurantiaca (Vezda) Vezda | | Pilocarpaceae
|
| FEBO | Fellhanera bouteillei (Desmaz.) Vezda | | Pilocarpaceae
|
| FEFL2 | Fellhanera floridana (Tuck.) S. Ekman | | Pilocarpaceae
|
| FESU7 | Fellhanera subtilis (Vezda) Diederich & Serusiaux | | Pilocarpaceae
|
| FELLH | Fellhanera Vezda | fellhanera | Pilocarpaceae
|
| FELI2 | Fendlera linearis auct. non Rehd. | Fendlera rigida | Hydrangeaceae
|
| FERI2 | Fendlera rigida I.M. Johnston | stiff fendlerbush | Hydrangeaceae
|
| FERUF | Fendlera rupicola Gray var. falcata (Thornb.) Rehd. | Fendlera rupicola | Hydrangeaceae
|
| FERUW | Fendlera rupicola Gray var. wrightii Gray | Fendlera wrightii | Hydrangeaceae
|
| FERU | Fendlera rupicola Gray | cliff fendlerbush | Hydrangeaceae
|
| FEWR | Fendlera wrightii (Gray) Heller | Wright's fendlerbush | Hydrangeaceae
|
| FENDL | Fendlera Engelm. & Gray | fendlerbush | Hydrangeaceae
|
| FEUTC | Fendlerella utahensis (S. Wats.) Heller var. cymosa (Greene ex Woot. & Standl.) Kearney & Peebles | Utah fendlerbush | Hydrangeaceae
|
| FEUTU | Fendlerella utahensis (S. Wats.) Heller var. utahensis | Utah fendlerbush | Hydrangeaceae
|
| FEUT | Fendlerella utahensis (S. Wats.) Heller | Utah fendlerbush | Hydrangeaceae
|
| FENDL2 | Fendlerella Heller | fendlerbush | Hydrangeaceae
|
| FEBR5 | Fernaldia brachypharynx Woodson | fernaldia | Apocynaceae
|
| FEPA3 | Fernaldia pandurata (A. DC.) Woodson | loroco | Apocynaceae
|
| FERNA | Fernaldia Woodson | fernaldia | Apocynaceae
|