The Polygalaceae or Milkwort family is a family of flowering plants in the order Fabales. They have a near-cosmopolitan range, with about 17 genera and 900-1000 species of herbs, shrubs and trees. Over half of the species are in one genus, Polygala, the milkworts.
Under the older Cronquist classification system, the Polygalaceae was treated in a separate order of its own, the Polygalales.
Under the (older) Cronquist system, the families now included in the Malpighiales were dispersed throughout a number of different orders, not all of which belonged to the Rosidae.
The most notable of these are the Polygalales, Violales, Theales, Linales, and Euphorbiales.
The family Malpighiaceae, itself, was placed in Polygalales, an order still recognised by ITIS.