Microeconomics is primarily concerned with the factors that affect individual economic choices, the effect of changes in these factors on the individual decision makers, how their choices are coordinated by markets, and how prices and demand are determined in individual markets.
Tansy is a perennial member of the aster family, with serrated, fernlike leaves and flat bright yellow flowers that resemble buttons. Originally native to Europe and Asia, tansy is now widely grown and has a number of traditional medicinal uses, though most modern herbalists warn against its use by laymen.
Tansy is also reputed to have had a place in Greek funeral rites. The name tansy is said to derive from the Greek word athanon , or immortal , either because of the flower's long-lasting nature or because of its ability to preserve dead bodies from decomposition.