The term "Order Rubiales" refers to a group of plants within the family Rubiaceae. These plants are characterized by their opposite leaves, interpetiolar stipules, and often small flowers. However, there are several synonyms for this order that may be used interchangeably. These include the Coffeales, Gardeniales, and Gentianales orders, as well as the Ixoroideae and Rubioideae superorders. Each of these groupings encompasses a range of different plant families and species, but they share many of the same characteristics that define the Order Rubiales. By understanding these synonyms, botanists and plant enthusiasts can more accurately identify and classify the many species within this diverse order.