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A large family of dicotyledonous plants, having their flowers arranged in dense heads of many small florets and their anthers united in a tube. The daisy, dandelion, and asters, are examples.

A large plant family of the order Asterales, subclass Asteridae, class Magnoliopsida. The family is also known as Compositae.

A very large order of gamopetalous dicotyledonous plants the inflorescence is a capitulum, the fruit an achene.