subclass Dilleniidae
n 1: 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; contains 69 families including Ericaceae and
Cruciferae and Malvaceae; sometimes classified as a
superorder [syn: {Dilleniidae}, {subclass Dilleniidae}]