composite flower

Short definition from Wiktionary

Noun

1. 1
   A flower that is made up of multiple simpler flowers; an inflorescence of the pseudanthium type.
2. 2
   An entire plant that has such flowers.
3. 3
   A particular family of such plants, the Asteraceae or Compositae (commonly referred to as the aster, daisy, composite, or sunflower family).