'Ichii-gashi' (Quercus gilva) belongs to Fagaceae (Beech family). It is an evergreen tall tree that is distributed form south Kanto district of Honshu west to Shikoku, Kyushu of Japan, Taiwan and China. This tree occurs in broad-leaved evergreen forests in mountains and can reach about 30 m in height. Barks are blackish-brown to grayish-black, and peel thinly. Leaves are oblanceolate, alternate and leathery with acute toothed edges at upper harf of blades. Reverse of the leaves are covered with yellowish-brown hairs. Erect female inflorescences and drooping male inflorescences are born in axiles from April to May. Fruits are nuts 10-13 mm in diameter, ripen in fall. These nuts haven't an astringent taste, and edible.