United States

Aconite

Aconitum napellus

Critically Endangered

Admiralty Island Meadow Vole (Admiraltiae)

Microtus pennsylvanicus

Agrimony

Agrimonia eupatoria

Near Threatened

Ajuga

Ajuga reptans

Endangered

Alder

Alnus glutinosa

Alder leaf beetle

Agelastica alni

Alder Spittlebug

Aphrophora alni

All Species in United States

Finger-scale foam lichen

Stereocaulon dactylophyllum

Finger Wart Lichen

Lepra dactylina

Fir Broom Rust

Melampsorella elatina

Fire ant

Solenopsis geminata

Fire-Berry Hawthorn

Crataegus chrysocarpa

Fire Birch

Betula populifolia

Firebrat

Thermobia domestica

firebug

Pyrrhocoris apterus

Firedot Lichen

Athallia holocarpa

fire moss

Ceratodon purpureus

Firerug Inkcap

Coprinellus domesticus

Firespike

Odontonema tubaeforme

Fire star orchid

Epidendrum radicans

Firetree

Morella faya

Fireweed

Chamaenerion angustifolium

Firewheel

Gaillardia pulchella

Fishbiscuit Russula

Russula compacta

Fishbone Beard Lichen

Usnea dasopoga

Fishbone Beard Lichen

Usnea filipendula

Fish Crow

Corvus ossifragus

fishhook waterflea

Cercopagis pengoi

Fishnet Cladonia

Cladonia boryi

Fishpoison

Tephrosia purpurea

Fishy Milkcap

Lactifluus volemus

Fiveangled dodder

Cuscuta pentagona

Five-Fingered Aralia

Eleutherococcus sieboldianus

Five-Finger Fern

Adiantum pedatum

Fivefingers

Syngonium angustatum

Fivehorn smotherweed

Bassia hyssopifolia

five-ranked peat moss

Sphagnum quinquefarium

Five-Seed Plume-Poppy

Macleaya cordata

Fivestamen chickweed

Cerastium semidecandrum

Five-stamen tamarisk

Tamarix chinensis

Flagellate Hawkweed

Pilosella flagellaris

Flag Iris

Iris pseudacorus

Flag smut of wheat

Urocystis tritici

Flame Chanterelle

Craterellus ignicolor

Flame lily

Gloriosa superba

Flame Lily

Lilium philadelphicum

Extinct

Flamevine

Pyrostegia venusta

Flaming Firedot Lichen

Athallia pyracea

Flaming Scalycap

Pholiota flammans

Flat bark beetle

Nausibius clavicornis

Flat bark beetle

Cryptophagus scanicus

flat-brocade moss

Platygyrium repens

Flat Crep

Crepidotus applanatus

Flat crown

Albizia adianthifolia

Flat Fruited Pelt

Peltigera horizontalis

Endangered

Flat grain beetle

Cryptolestes pusillus

Flat-Leaved Bladderwort

Utricularia intermedia

Critically Endangered

flat-leaved scalewort

Radula complanata

Flat-Stalk Pondweed

Potamogeton friesii

Near Threatened

Flat-Stem Oat Grass

Danthonia compressa

flat stump moss

Herzogiella turfacea

Near Threatened

Flat-Top Aster

Doellingeria umbellata

Flat-Top Bogmoss

Sphagnum fallax

Flat-top mille graines

Oldenlandia corymbosa

flax dodder

Cuscuta epilinum

Extinct

Flax-Leaf Aster

Ionactis linariifolia

Flaxleaf fanpetals

Sida linifolia