Live oak (Quercus virginiana) belongs to the family Fagaceae (the Beech family). It is a tall evergreen tree that is distributed from the Atlantic side of United States to along the Gulf of Mexico, from Virginia to Texas. This tree grows on coastwise places, and it can reach 9-15 m in height. The crown is round, and spreads by twice tree height wide. The bark is reddish-brown, and furrowed into brick-shape. The leaves are elliptic to oblong and arranged in opposite. They are usually entire, though highly variable and rarely spiny serrated. It loses its old leaves in the spring and foriates new leaves in a matter of weeks. It produces inconspicuous female flower and male flowers in the catkins. The fruit is nut which measures about 2 cm long, and ripen in the fall of that year.