ಅರ್ಥ : Comprising seed plants that produce an embryo with paired cotyledons and net-veined leaves. Divided into six (not always well distinguished) subclasses (or superorders): Magnoliidae and Hamamelidae (considered primitive). Caryophyllidae (an early and distinctive offshoot). And three more or less advanced groups: Dilleniidae. Rosidae. Asteridae.