dilleniidae

n. a group of families of more or less advanced trees and shrubs and herbs having either polypetalous or gamopetalous corollas and often with ovules attached to the walls of the ovary; it contains 69 families including Ericaceae and Cruciferae and Malvaceae; it is sometimes classified as a superorder.
Syn. -- subclass Dilleniidae. [ WordNet 1.5 ]