Australian-oak

Eucalyptus delegatensis, commonly known as alpine ash, woollybutt or gum-topped stringybark, is a very tall forest tree of the family Myrtaceae, native to the cool-temperate uplands of south-eastern Australia, including Victoria, New South Wales and Tasmania. It is one of the largest eucalypts, often reaching 40–70 m in height with a straight, single trunk to 3 m in diameter. The bark is persistent, fibrous and longitudinally furrowed (stringybark) on the lower trunk, but smooth, white, grey or yellow and deciduous in long ribbons on the upper trunk and branches. Juvenile leaves are opposite, glaucous and ovate to oblong, while adult leaves are alternate, lanceolate to falcate, 9–20 cm long and 1.5–3 cm wide, dull green to grey-green and pendulous. The inflorescence is an axillary umbel of 7–15 white flowers borne on a flattened peduncle, with conical opercula. Fruits are pyriform to barrel-shaped capsules 6–11 mm long with enclosed valves. The species regenerates principally from seed after fire and is a major commercial timber tree.