C. dichotoma may refer to: * Callicarpa dichotoma, the purple beautyberry or early amethyst, a plant species * Caulerpa dichotoma, a green alga species * Ceropegia dichotoma, the cardoncillo, a flowering plant species endemic to the Canary Islands * , a plant species in the genus Clidemia * Cordia dichotoma, the fragrant manjack or the bird lime tree, a plant species