Calamus

Acorus calamus (sweet flag)
Calamus is found, known and used worldwide and for thousands of years in medicine. Aphrodisiac recipes from India and Ayurvedic medicine call for this swamp plant, and Arabs, Iranians and certain Native Americans use it alone to help boost libido.
Asarone and beta-asarone are both found in calamus, and are both psychoactive chemicals that in large enough doses are hallucinogenic. It takes a fairly large dose to cause hallucinations if the plant itself is used (as opposed to an extract). Like most psychoactive drugs, they have some indirect use as aphrodisiacs.