Steam distilled calamus root essential oil from India. Also known as sweet cinnamon, sweet flag, sweet myrtle and sweet root.
Species: Acorus calamus L. Family: Araceae. Class: Ketone.

Aromatherapy uses include: Regulating blood pressure through dilation of spleen blood vessels, as a remedy for hangovers, as a perfume, and wine flavoring.
Here is an article: Sweet flag.