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.