Quercus myrsinifolia

Quercus myrsinifolia is an Asian species of tree in the beech family Fagaceae. It has several common names, including bamboo-leaf oak, Chinese evergreen oak, and Chinese ring-cupped oak. Its Chinese name is 小叶青冈; pinyin: xiǎo yè qīng gāng, which means little leaf ring-cupped oak (literally translated as little leaf green ridge tree), in Japan it is called white oak (白樫) and in Korea it is known as gasinamu (가시나무). It is native to east central and southeast China, Japan, Korea, Laos, northern Thailand, and Vietnam. It is placed in subgenus Cerris, section Cyclobalanopsis.

Description
Quercus myrsinifolia is an evergreen oak tree that grows up to 20 m tall. Leaves are 60–110 × 18–40 mm with serrulate margins;  the petiole is 10–25 mm long. The acorns are ovoid to ellipsoid, 14–25 × 10–15 mm, and glabrous with a rounded apex; the flat scar is approx. 6 mm in diameter. Cupules are 5–8 × 10–18 mm, enclosing 1/3–1/2 of acorn, bracts are not connate at the apex.