Nilgiri, which literally means "Blue Mountain" in many languages.
History of Nilgiri
This plant was the principal source of medicinal eucalyptus oil in Spain, Portugal, Brazil, Columbia, Mexico and Belgian Congo. In Belgian Congo and in Guatemala, E smithii was also exploited for medicinal oil. This oil was also called as "Nilgiri Taila" because of its area of cultivation, in India. The oil was widely extracted in the hills of Udagamand (Nilgiris, south India)