Definition: Hemithiridoidean is a family of plants that includes the common hemithiridiums, which are flowering plants with three main species: the hemithiridium (Hemifolium), the hemithiridium (Hemipelum), and the Hemitilium. These plants have five primary flowers on each stem, which is usually two to four inches long. They are widely distributed in tropical and subtropical regions around the world, including