Tetradoxa is a monotypic genus in the family Adoxaceae containing the single species Tetradoxa omeiensis. It is sometimes included in the genus Adoxa.[1] It is endemic to China, where it is known only from Sichuan.
This species has a stem 10 to 20 centimeters long with a few basal leaves and one pair of oppositely arranged stem leaves. It produces an inflorescence of 3 to 5 yellow-green flowers.[1]