A false calyx is a structure that resembles a calyx but is not a true one. In botanical terms, the false calyx is referred to as an epicalyx. This structure is commonly found in members of the mallow family (Malvaceae) and is composed of bracts that resemble sepals. Other synonyms for the false calyx include the auxiliary calyx and the outer calyx. In some cases, the false calyx may be mistaken for the real calyx, but its differentiation from the latter is important in morphological studies and taxonomic classification. Overall, the use of synonyms for false calyx can aid in accurate classification and identification of plant species.