Quercus trojana

Taroko oak is in the turkey oak group (Cerris), in the beech or Fagaceae family, and is native to southeast Europe and southwest Asia, from southern Italy east across the southern Balkans to western Turkey. It is a small to medium-sized tree reaching up to 20 m tall.

• Leaves are semi-evergreen, oval-lanceolate, grey-green, 3–7 cm long and 1.5–4 cm broad, with a coarsely serrated margin with 6-12 pairs of sharply pointed teeth.
• Flowering occurs in May-June.
• Fruit is an acorn 2.7–4.5 cm long 1.8-2.4 cm in diameter, enclosing 2/3 of the nut in a scaly acorn cup, maturing in 2 years.
• Bark is reddish grey-brown; twigs are thin, gray-brown, pubescent at first, becoming glabrous, with brownish, round lenticels.