Polygalaceae is a family of flowering plants that includes around 16-23 genera and approximately 800-1,000 species. These plants are characterized by their small, regular flowers with united petals and sepals, and typically have two stamens and a unique type of ovary called a superior ovary. The fruits of Polygalaceae are varied and can be dry or fleshy, dehiscent or indehiscent. The family includes a wide range of growth habits, from herbaceous annuals and perennials to shrubs and trees. Some well-known members of Polygalaceae include the milkworts (Polygala spp.), flowering tobacco (Isoetes spp.), and the leadplant (Amorpha canescens).