Bromeliads belong to the family Bromeliaceae and are members of the Class Liliopsida (monocots). Monocots comprise one quarter of all flowering plants and include some of the largest and most well known groups of plants: orchids, palms, grasses. Traditionally the family Bromeliaceae has been divided into three subfamilies: Pitcairnioideae, Bromelioideae and Tillandsioideae.

courtesy of Bromeliad Society International, bsi.org