Noun | 1. | family Paeoniaceae - perennial rhizomatous herbs and shrubs; of temperate Europe and North America magnoliid dicot family - family of dicotyledonous flowering plants regarded as among the most primitive of extant angiosperms order Ranales, order Ranunculales, Ranales, Ranunculales - herbs, shrubs and trees: includes families Ranunculaceae; Annonaceae; Berberidaceae; Magnoliaceae; Menispermaceae; Myristicaceae; Nymphaeaceae; Lardizabalaceae; Lauraceae; Calycanthaceae; Ceratophyllaceae; Cercidiphyllaceae genus Paeonia, Paeonia - peonies: herbaceous or shrubby plants having showy flowers |