The most advanced type of inflorescence is
corymb
catkin
spadix
capitulum
D.
capitulum
Capitulum is the most advanced type of inflorescence. It is the characteristic of family Compositae. In this inflorescence peduncle is flattened to form receptacle that bears centripetally arranged small sessile flowers called florets surrounded by involucre of bracts, eg., marigold, sunflower etc.