Introduction
Eucalyptus is a large genus of family wyrtaceae which
comprises over 500 species, varieties and hybrids. Most of the
species are indigenous to Australia, Tasmania, New Guinea and the
neighboring islands, where they constitute a large portion of
forest vegetation. This being one of the large genera, a great
number of classification schemes have been proposed since its discovery but the system now in use and universally accepted is based
on shape of the anthers.
Eucalyptus are among the world’s important hard woods
and the principal source of timber in Australia. Besides, Eucalyptus oil has got also much importance in commerce. Cultivation of
Eucalyptus got momentum due to its commercial importance throughout the world. Further, rapid growth, ease in cultivation and adoptability have also helped much in wide spread introduction into
many countries specially those poorly endowed with forest resources.
This plant has become such an important factor in the economy of
some countries that millions of trees are now being planted each
year throughout the world.