Feathery. Plumose; having long hairs which are themselves hairy, as the pappus of Taraxacum.
Fenestrate. Pierced with holes, like windows in a wall.
Ferruginous. Rust-coloured.
Fertile. Capable of producing fruit; also applied to stamens which produce pollen capable of fertilising ovules.
Fibrous. Containing a great proportion of woody fibre.
Filament. (1.) The stalk or support of an anther. (2.) Any thread-like body.
Filamentous. Composed of threads or filaments.
Filiform. Thread-shaped.
Fimbriate. Having the margin fringed with narrow processes.
Fistular, Fistulose. Hollow and cylindrical; reed-like.
Flabellate, Flabelliform. Fan-shaped.
Flaccid. Flabby; limp.
Flagelliform. Long and slender, like a whip-lash.
Flexuose. Bent or curved alternately in opposite directions.
Floccose. Bearing tufts or locks of woolly hairs.
Floret. A small fiower, one of a cluster or head.
Floriferous. Flower-bearing.
Fœtid. Having a strong and disagreeable smell.
Foliaceous. Having the texture or form of a leaf.
Foliate. Leafy; clothed with leaves.
Foliolate. Having leaflets.
Follicle. A fruit consisting of a single carpel, dehiscing by the ventral suture.
Follicular. Resembling a follicle.
Food-stalk. A petiole, pedicel, or other slender support.
Forked. Branching into two divergent divisions.
Foveate. Pitted: marked with depressions.
Frond. The foliage of ferns and other Cryptogams.
Fructification. Fruiting; the organs concerned in the production of fruit.
Fruticose. Shrubby.
Fugacious. Soon falling off or perishing: of short duration.
Fulvous. Tawny; dull-yellow with a mixture of gray or brown.
Funicle. The stalk connecting the ovule or seed with the placenta.
Furcate. Forked; having divergent branches like the prongs of a fork.
Furfuraceous. Scurfy; provided with soft scales.
Fusiform. Thick, but tapering towards each end; spindle-shaped.
Galea. A petal shaped like a helmet.
Gamopetalous. Applied to a corolla in which the petals are more or less united.
Gamosepalous. Having the sepals more or less united.
Geminate. Arranged in pairs; binate.
Generic. Relating to the genus.
Geniculate. Bent like the knee.
Genus. A clearly defined group of naturally allied species.
Gibbous. Protuberant; swelling out into a pouch or sac.
Glabrous. Having no hairs or pubescence; smooth.
Glabrate. Becoming glabrous.
Glabrescent. Almost glabrous.
Gladiate. Sword-shaped; ensiform.
Gland. Any secreting structure, whether depressed or prominent, on any part of a plant.
Glandular. Possessing glands; gland-like.
Glaucescent. Becoming glaucous or sea-green.
Glaucous. Of a sea-green colour.
Globose, Globular. Spherical or nearly so.
Glochidiate. Applied to hairs that are barbed at the end.
