What is the scientific name of the Tasmanian blue gum?

The scientific name of the Tasmanian blue gum is Eucalyptus globulus.

Eucalyptus globulus is a tall, evergreen flowering tree native to southeastern Australia, especially Tasmania and parts of Victoria. The Tasmanian blue gum is the nominate subspecies, Eucalyptus globulus subsp. globulus, but the species-level name Eucalyptus globulus is the standard answer to this question.

The tree is recognised by its smooth bark, waxy juvenile leaves, glossy lance-shaped adult leaves, white flowers, and woody, ribbed fruit capsules. It was formally described in 1800 by the French botanist Jacques Labillardière, who collected specimens during the d’Entrecasteaux expedition in Tasmania.

The species is economically important because its leaves are distilled for eucalyptus oil, whose principal compound is cineole, also called eucalyptol. Blue gum has also been extensively planted outside Australia, particularly in regions with Mediterranean climates, although it can behave as an introduced species in some countries.

The name can be confused with other blue gums. Eucalyptus citriodora, Eucalyptus camaldulensis, and Eucalyptus regnans are separate species, not alternative scientific names for the Tasmanian blue gum.