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|Noun||1.||Magnoliidae - 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|
class - (biology) a taxonomic group containing one or more orders
magnoliid dicot family - family of dicotyledonous flowering plants regarded as among the most primitive of extant angiosperms
magnoliid dicot genus - genus of dicotyledonous flowering plants regarded as among the most primitive of extant angiosperms
class Dicotyledonae, class Dicotyledones, class Magnoliopsida, Dicotyledonae, Dicotyledones, Magnoliopsida - 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