Tagetes Lucida is a perennial plant native to Mexico and Central America. It is used as a medicinal plant and as a culinary herb. The leaves have a tarragon-like flavor, with hints of anise, Common names include yerbaniz, Mexican marigold, pericón, Mexican mint marigold, Mexican tarragon, Spanish tarragon, Cempaxóchitl, Sweet Mace and Texas tarragon.


Uses
Fresh or dried leaves are used as a tarragon substitute for flavoring soups, sauces etc.

A pleasant anise-flavored tea is brewed using the dried leaves and flowering tops. This is primarily used medicinally in Mexico and Central America. [4]

A yellow dye can be obtained from the flowers.

The dried plant is burnt as an incense and to repel insects.[3]

from Wikipedia