The Genus Tanacetum is a group of flowering plants that belong to the Asteraceae family. Commonly known as tansies, this genus includes several species of perennial herbs that are known for their medicinal properties. Some common synonyms for the Genus Tanacetum include Chrysanthemum, Tanacetella, and Leucanthemum. The plants in this genus are known for their aromatic properties and have a bitter taste. Tansy has been used for centuries to treat various ailments, including stomach disorders, menstrual cramps, and migraines. Due to its strong scent, tansy has also been used as a natural insect repellent. The Genus Tanacetum is widely distributed across Europe, Asia, and North America.