Calyx and Corolla are indistinguishable in the family

In the family Liliaceae, which is a monocot family, the calyx and corolla of flowers look alike and such flowers are described as homochlamydeous. In Brassicaceae, Solanaceae and Fabaceae, the calyx and corolla of flowers is clearly demarcated into calyx and corolla. Such flowers are called heterochlamydeous flowers which is common in dicot families.