Filiferous. Thread-bearing.
Filiform. Thread-shaped; long, slender, and terete.
Fimbriate. Fringed.
Fimbrillate. Having a minute fringe.
Fingered. Digitate.
Fistular. Hollow and cylindrical.
Flaccid. Without rigidity, lax and weak.
Fleshy. Succulent; juicy; of the consistence of flesh.
Flexuous. Zigzag; bending alternately in opposite directions.
Floccose. Clothed with locks of soft hair or wool.