Fertile. Flowers containing the pistil, capable of producing fruit. Anthers in such blossoms, if any, are generally abortive.
Fibrovascular. Bundle or tissue, formed of wood fibers, ducts, etc.
Filament. Part of stamen supporting anther.
Fungus. A division of cryptogamous plants, including mushrooms, etc.
Furcation. Branching.
Glabrous. Smooth without hairiness or roughness.
Glandular. Bearing glands or appendages having the appearance of glands.
Glaucous. Covered with a bloom: bluish hoary.
Globose or globous. Spherical or nearly so.
Habit. The general appearance of a plant.