Order Primulales is a group of flowering plants that belong to the subclass Asteridae. It is a diverse order that comprises several families and various genera. The name Primulales is derived from the family Primulaceae, which is one of the significant families in this order. In the past, Primulales has been known by other names such as Primuliflorae and Theophrastales. Some synonyms for order Primulales include Ericales, Gentianales, Guettardiales, Solanales, and Lamiales. Despite the name changes, the defining characteristics of these plants, such as their simple leaves, radial symmetry, and actinomorphic flowers, have remained constant.