Quercus serrata, the jolcham oak[3] (Chinese: 枹栎; pinyin: bāolì, Japanese: 小楢 (konara)),[4] is an East Asian species of tree in the beech family.

[5][6] Quercus serrata is a deciduous oak tree reaching a height of 25 metres (82 feet) occupying elevations from 100–2,000 m (330–6,560 ft).

[5] The leaves are up to 17 centimetres (6+3⁄4 in) long by 9 cm (3+1⁄2 in) wide, leathery, elliptical in shape, with serrated margins; they are densely covered with trichomes when young, becoming glabrous with age.

The flowers are pistillate inflorescences from 1.5–3 cm (1⁄2–1+1⁄4 in) long, occurring in March to April.

[5] The plant frequently attracts stinkbugs which lay their eggs inside them.