Marrawah gum

Eucalyptus ovata, the swamp gum or black gum, is a medium-sized tree in the Myrtaceae native to southeastern Australia, particularly Tasmania, Victoria, and southern New South Wales, where it favours seasonally waterlogged flats and the margins of swamps and streams. It typically reaches 15-30 m tall, with a short, often crooked trunk and a spreading, open crown. The bark is rough, dark grey, and fibrous on the lower trunk, giving way to smooth, pale grey or cream surfaces on the upper trunk and branches that shed in long ribbons. Adult leaves are alternate, broadly ovate to lanceolate, 7-14 cm long, glossy green, and slightly discolorous. White flowers are borne in axillary umbels of seven buds with conical opercula in autumn and winter, and the resulting hemispherical fruits are 4-8 mm wide with broad disc and exserted valves. The species is the dominant tree of much of Tasmania's lowland swamp forest.