👉 Istiophorus is a genus of flowering plants in the family Apiaceae. It belongs to the family of Asteraceae, which includes over 300 species of annuals and perennials. Some of the most well-known members of this group include the aster, the asters, and the primroses. These plants are often used for their colorful flowers and are known for their ability to produce a large number of seeds in a single plant.