Quercus serrata

Brown oak is in the white oak group (Quercus), in the beech or Fagaceae family, and is native to southern, central, and eastern China, Taiwan, Japan and Korea. It is a medium-sized tree growing up to 25 m in height.

• Leaves are deciduous, simple, leathery, elliptical in shape, up to 17 cm long by 9 cm wide, with serrated margins; leaves are densely covered with fine hairs when young, becoming glabrous with age; petioles are up to 3 cm long.
• Species is monoecious; pistillate (female) inflorescences are 1.5–3 cm long, occurring in March to April.
• Fruit is an oval-shaped acorn, 1.7–2 cm long, maturing in 1 year; its cup has fine hairs and triangular-shaped scales covering 1/4 to 1/3 of the acorn.
• Bark is grey or reddish-brown, with longitudinal furrows.