COMPOSITUS FLOS, in botany, an aggregate flower composed of many flosculi sessiles, on a common entire receptaculum, with a common perianthium, and whose antheræ being five in number unite in the form of a cylinder; the flosculi are monopetalous, and under each of them is a monospermous germen.
Compound flowers are either ligulati, tubulosi, or radiati.