Family : a group of related genera. 

      Filament : any thread - like body : used especially for that part of the stamen that supports the anther. 

      Frond (fern) : leaf of a fern. 

      Filament: the stalk of an another; any thread-like body. 

      Fimbriate: fringed. 

      Floccose: clothed with soft hairs. 

      Follicle: a fruit of one carpel opening by a ventral suture to which the seeds are attached. 

      Fragal: a suffix indicating breaking or splitting. 

      Frond: the leaf of a fern. 

      Funicle: the stalk of a ovule or seed.