Eucalyptus delegatensis, also known as mountain ash or Tasmanian oak, is a tall tree native to southeastern Australia. It is the tallest flowering plant in the world, reaching heights of up to 100 meters. Other synonyms for this species include Alpine Ash, White Top, Woollybutt, Ribbon Gum and Victorian ash. Eucalyptus delegatensis is an important timber species and is highly valued for its wood, which is used in construction, furniture, and paper production. It is also a popular tree in ornamental gardens and as a source of essential oils. With its impressive height and graceful appearance, Eucalyptus delegatensis is a beloved and iconic species in Australia and beyond.