Fragile Rockbrake          

Fragrant Bedstraw          

Fragrant Flatsedge      

Fragrant Orchid          

Fragrant Sumac          

Fraser's Marsh St. Johnswort          

French Rose          

Fries' Pondweed          

Fringed Black Bindweed          

Fringed Brome      

Fringed Gentian          

Fringed Loosestrife          

Fringed Orchid          

Fringed Sedge      

Fringed Willowherb          

Frostweed          

Fuller's Teasel          

Fumewort          

Fumitory          

Fuzzy Pride-of-rochester          

Fuzzy Wuzzy Sedge          

Fuzzybean