Quercus acutissima

The sawtooth oak in the turkey oak group (Cerris), in the beech or Fagaceae family, is an Asian species of oak native to China, Korea, Japan, Indochina (Vietnam, Thailand, Myanmar and Cambodia) and the Himalayas. It is closely related to turkey oak (Q. cerris).

It is widely planted in many countries and has become naturalized in parts of North America.

• Leaves are alternate, simple, narrow oblong, chestnut-like, 8–20 cm long and 3–6 cm wide, with 14–20 small saw-tooth-like triangular lobes on each side, with the teeth of very regular shape. The foliage turns yellow very late in autumn, the dried leaves persisting on the tree through winter.
• Species is monoecious. Male flowers are yellow-green drooping catkins up to 10 cm long, female catkins are on spikes.
• Fruit is an oval acorn up to 2.5 cm long, the cap covering half of the nut, ripening after 2 years.
• Twig is slender with multiple terminal buds gray-brown in colour and somewhat pyramidal in shape.