Eucalyptus has attracted attention from global development researchers and environmentalists. It is a fast-growing source of wood. Outside their natural ranges, eucalypts are both lauded for their beneficial economic impact on poor populations. Eucalypts are among the tallest trees in the world. Eucalyptus regnans, the Australian Mountain Ash, is the tallest of all flowering plants (Angiosperms); today, the tallest measured specimen named Centurion is 99.6 m (327 ft) tall.

General Structure: The Tree may reach a height of 100 ft and more; with clear, straight boles to 70 ft; trunk diameters about 3 ft.
Other Common Names: Taukkyan (Burma), Sadar, Matti, Asna, Marda (India). General Characteristics: Heartwood varying from light brown with few markings to dark brown or brownish black and figured with darker streaks; sapwood reddish white, sharply differentiated. Grain fairly straight; texture coarse; dull to somewhat lustrous; without characteristic odor or taste.