Madia is a genus of annual or perennial usually aromatic herbs with yellow flowers, in the tarweed tribe within the sunflower family.Tropicos, Madia Molina They are sometimes known as tarweeds. The species in this genus are native to western North America and southwestern South America. The name Madia is derived from native Chilean name ("Madi") for one of the members of the genus (Madia sativa). see Anisocarpus Harmonia Jensia Kyhosia