| a composite plant, Chrysanthemum balsamita, that has silvery, fragrant leaves and is used in salads and as a flavoring. |

costmary
(Tanacetum balsamita), aromatic herb of the aster family (Asteracae) with yellow, button-shaped flowers. Its bitter, slightly lemony leaves may be used fresh in salads and fresh or dried as a flavouring, particularly for meats, poultry, and English ale. The dried leaves are also used as a tea and in potpourri.
Learn more about costmary with a free trial on Britannica.com.