Fairy club fungus Clavulinopsis fusiformis Miscellaneous Fungi
Fairy helmet Mycena inclinata Gilled Mushrooms
Fairy helmet, golden Mycena leaiana Gilled Mushrooms
False banana (see Pawpaw)
False Mermaid/ Floerkia Floerkia prosperpinacoides False Mermaid
Featherbells Stenanthium gramineum Lily
Fern, Bead (see Fern, Sensitive)
Fern, boulder (see Fern, hay scented)
Fern, brittle (see Fern, fragile)
Fern, Christmas Polystichium acrosticoides Fern
Fern, cinnamon Osmunda cinnamomea Fern
Fern, Cut-Leaved Grape Botrychium dissectum Fern
Fern, fragile Cystopteris fragilia Fern
Fern, hay scented Dennstaedia punctilobula Fern
Fern, interrupted Osmunda claytoniana Fern
Fern, lady Athyrium filix-femina Fern
Fern, Maidenhair Adiantum pedatum Fern
Fern, New York Thelypteris noveboracensis Fern
Fern, Northern Maidenhair (see Fern, Maidenhair)
Fern, ostrich Matteuccia struthiopteris Fern
Fern, rattlesnake Botrychium virginianum Fern
Fern, Sensitive Onoclea sensibilis Fern
Fern, Virginia grape (see Fern, rattlesnake)
Fern, walking Camptosorus rhizophyllus Fern
Feverfew Chrysanthemum parthenium Composite
Feverfew, American (see Quinine, wild)
Figwort Scrophularia marilandica Snapdragon (Figwort)
Fireweed (see Pilewort/ Fireweed)
Five Fingers (see Cinquefoil, Dwarf/ Fivefingers)
Flag, Blue (see Iris, Common Wild/ Blue Flag)
Flat crep Crepidotus applanatus Gilled Mushrooms
Fleabane, Common/ Philadelphia Fleabane Erigeron philadelphicus Aster-Like
Fleabane, Daisy Erigeron strigosus Aster-Like
Fleabane, Philadelphia (see Fleabane, Common/ Philadelphia Fleabane)
Floerkia (see False Mermaid/ Floerkia)
Flower-of-an-Hour Hibiscus trionum Mallow
Fly agaric Amanita muscaria var formosa Gilled Mushrooms
Fly agaric, yellow-orange Amanita muscaria var.guessowi Gilled Mushrooms
Foamflower Tiarella cordifolia Saxifrage
Fogfruit (see Fogfruit, Turkey-Tangle/Fogfruit)
Fogfruit, Lanceleaf Phyla lanceolata
Fogfruit, Turkey-Tangle/Fogfruit Phyla nodiflora Vervain
Forget-Me-Not, Smaller Myosotis laxa Forget-Me-Not/Borage
Forget-Me-Not, True Myosotis scorpioides Forget-Me-Not/Borage
Forsythia Forsythia suspensa Olive
Four o-clock Mirabilis nyctaginea Four O'Clock
Foxglove Digitalis purpurea Snapdragon (Figwort)
Foxglove, Downy False Gerardia virginica Snapdragon (Figwort)
Foxglove, Smooth False Gerardia laevigata Snapdragon (Figwort)
Freckled dapperling Lepiota aspera Gilled Mushrooms
Funnelcap Infundibulocybe squamulosa Gilled Mushrooms
Funnelcap, clubfoot Ampulloclitocybe clavipes Gilled Mushrooms
Funnelcap, forest Infundibulicybe gibba Gilled Mushrooms
Funnelcap, robust Clitocybe robusta Gilled Mushrooms
Floerkia prosperpinacoides
Pteridium latiusculum
Polystichium acrosticoides
Osmunda cinnamomea
Botrychium dissectum
Cystopteris fragilia
Dennstaedia punctilobula
Osmunda claytoniana
Athyrium filix-femina
Adiantum pedatum
Thelypteris noveboracensis
Matteuccia struthiopteris
Botrychium virginianum
Onoclea sensibilis
Camptosorus rhizophyllus
Polypodium vulgare
Asplenium platyneuron
Dryopteris marginalis
Dryopteris spinulosa
Mertensia virginica
Borago officinalis
Lycopsis arvensis
Echium vulgare
Symphytum officinale
Myosotis laxa
Myosotis scorpioides
Hackelia virginiana
Mirabilis nyctaginea
Allionia nyctaginea
Pterospora andromedea