Eucalyptus trees are species of large flowering trees and shrubs with aromatic leaves and attractive smooth peeling bark. Some types of Eucalyptus trees are called gum trees , and fruit from eucalyptus plants are called gumnuts. Eucalyptus plants are native to Australia but also grow in tropical and temperate climates throughout the world. Discover how eucalyptus trees , once seen as an economic boon, are now threatening India's grasslands by depleting water resources and displacing native wildlife. Learn about sustainable solutions being implemented to restore these vital ecosystems. Eucalyptus is a genus of more than 700 species of trees, shrubs, and mallees in the family Myrtaceae. They are native to Australia and have distinctive bark, leaves, flowers, and fruits. It is a large genus of more than 660 species of shrubs and tall trees of the myrtle family (Myrtaceae). Some of the tallest trees in the world are eucalypti . It is native to Australia, Tasmania, and nearby islands. In Australia, the eucalypti are commonly known as gum trees or stringybark trees.