subclass magnoliidae meaning and definition

SUBCLASS MAGNOLIIDAE noun

Definition of subclass Magnoliidae (noun)

1. a group of families of trees and shrubs and herbs having well-developed perianths and apocarpous ovaries and generally regarded as the most primitive extant flowering plants; contains 36 families including Magnoliaceae and Ranunculaceae; sometimes classified as a superorder
   • synonyms: Magnoliidae, ranalian complex