Calamus (Acorus calamus), or sweet flag, has many, many other common names. It is found, known and used worldwide, and has been used medicinally for thousands of years. 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), and is usually achieved by chewing on the root (technically a rhizome). Like most psychoactive drugs, they have some indirect use as aphrodisiacs: when the more protective layers of a personality are distracted, underlying desires are more likely to surface.