An actinomorphic flower is a flower that can be divided into two equal/identical halves from any plane passing through the central axis of the flower. This type of flower is also known as radially symmetrical, regular, or polysymmetric. Actinomorphic flowers are capable of being divided by more than one line passing through the middle of the flower into two equal parts that are mirror images of one another. Examples of plants with actinomorphic flowers include buttercups, lilies, and species of Myrtaceae and Rubiaceae. Actinomorphic flowers are the opposite of zygomorphic, monosymmetric, bilateral, and irregular flowers.