| Noun | 1. | Primulales - Primulaceae; Theophrastaceae; Myrsinaceae; and (in some classifications) Plumbaginaceae plant order - the order of plants 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 family Primulaceae, primrose family, Primulaceae - a dicotyledonous family of the order Primulales with a regular flower; widely distributed in the northern hemisphere family Myrsinaceae, Myrsinaceae, myrsine family - family of Old World tropical trees and shrubs; some in Florida order Plumbaginales, Plumbaginales - coextensive with the family Plumbaginaceae; usually included in order Primulales family Plumbaginaceae, leadwort family, Plumbaginaceae, sea-lavender family - perennial herbs and shrubs and lianas; cosmopolitan especially in saltwater areas family Theophrastaceae, Theophrastaceae - family of mainly tropical American trees and shrubs similar to those of the Myrsinaceae; often included in the Myrsinaceae |