Click on a common name for a photo of the plant, or click on a letter for names beginning with that letter.
| False-dandelion, Carolina |
Pyrrhopappus carolinianus |
| False-foxglove, Downy |
Aureolaria virginica |
| Fame-flower, Round-leaved |
Phemeranthus teretifolius |
| Featherfoil |
Hottonia inflata |
| Fennel, Sweet |
Foeniculum vulgare |
| Fern, Broad Beech |
Phegopteris hexagonoptera |
| Fern, Christmas |
Polystichum acrostichoides |
| Fern, Cinnamon |
Osmundastrum cinnamomeum var. cinnamomeum |
| Fern, Hay-scented |
Dennstaedtia punctilobula |
| Fern, Interrupted |
Osmunda claytoniana var. claytoniana |
| Fern, Marsh |
Thelypteris palustris var. pubescens |
| Fern, New York |
Parathelypteris noveboracensis |
| Fern, Northern Bracken |
Pteridium aquilinum var. latiusculum |
| Fern, Rattlesnake |
Botrypus virginianus |
| Fern, Royal |
Osmunda regalis var. spectabilis |
| Fern, Sensitive |
Onoclea sensibilis |
| Fescue, Kentucky |
Schedonorus arundinaceus |
| Fetterbush |
Eubotrys racemosa |
| Figwort, Carpenter's Square |
Scrophularia marilandica |
| Filaree, Redstem |
Erodium cicutarium |
| Fire-pink |
Silene virginica |
| Fireweed |
Erechtites hieraciifolius |
| Flatsedge, Rusty |
Cyperus odoratus var. odoratus |
| Fleabane, Daisy |
Erigeron strigosus var. strigosus |
| Fleabane, Philadelphia |
Erigeron philadelphicus |
| Fleabane, Robin's |
Erigeron pulchellus var. pulchellus |
| Fleabane, Salt Marsh |
Pluchea odorata var. succulenta |
| Fleabane, White-top |
Erigeron annuus |
| Flower-of-an-hour |
Hibiscus trionum |
| Fly-poison |
Amianthium muscitoxicum |
| Forget-me-not, Chinese |
Cynoglossum amabile |
| Forget-me-not, Field |
Myosotis arvensis |
| Forget-me-not, Large-seed |
Myosotis macrosperma |
| Forget-me-not, Small |
Myosotis laxa subsp. laxa |
| Forget-me-not, Small-flowered |
Myosotis stricta |
| Forget-me-not, True |
Myosotis scorpioides |
| Forget-me-not, Yellow-and-blue |
Myosotis discolor |
| Forsythia |
Forsythia ×intermedia |
| Foxglove, Fernleaf Yellow False |
Aureolaria pedicularia var. pedicularia |
| Foxglove, Large-purple False |
Agalinis purpurea |
| Foxtail, Giant |
Setaria magna |
| Foxtail, Nodding |
Setaria faberi |
| Frostweed, Canada |
Crocanthemum canadense |
| Frullania |
Frullania asagrayana |