Eucalyptus Regnans, commonly known as Tasmanian Oak or Mountain Ash, is a species of eucalyptus tree native to Tasmania and southeastern Australia. This tall and straight-trunked tree has grayish-brown bark and produces dark green leaves. Its wood is highly valued for its strength and durability, and is often used for construction, furniture, and flooring. Other synonyms for Eucalyptus Regnans include Victorian Ash, Stringy Bark, and Swamp Gum. These names reflect the various regions and habitats in which the tree grows. Despite its many names, Eucalyptus Regnans remains one of the most iconic and important tree species in Australia.