F.

Fayal, n. One of the Azores Islands, west of Portugal.

Ferns, n. A division of flowerless plants.

Fertilize, v. L. fertilis, fruitful; to make fruitful or productive, in the flower, by introducing the pollen to the ovule, enabling them in union to become a seed.

Filament, n. L. filum, a thread; the stem of an anther, often thread-like in form, though it varies greatly; any thread-like part.

Flower, n. L. flos, a flower; the part of a plant consisting of pistil, stamens, corolla, and calyx. Sometimes the corolla is wanting; sometimes both calyx and corolla are wanting. Since pistils and stamens are the most important part of the flower, an organ containing them only is called a flower. Sometimes a flower consists of only stamens or only pistils, as in some kinds of maple.

Force pump, n. A pump in which a liquid is moved by pressure behind instead of being lifted, as is the case in the ordinary pump.

Fossil, n. Animal or vegetable forms which have been long buried in the earth and so preserved; the forms or traces of animal or vegetable structures which have been preserved in rock.

Fruit, n. The matured ovary and all it contains or is incorporated with. Sometimes the calyx forms part of the fruit, as in the apple.