- Liliidae, subclass Liliidae - one of four subclasses or superorders of Monocotyledones; comprises 17 families including: Liliaceae; Alliaceae; Amaryllidaceae; Iridaceae; Orchidaceae; Trilliaceae
--1 is a kind of class
--1 is a member of
--1 has members:Monocotyledones, class Monocotyledones, Monocotyledonae, class Monocotyledonae, Liliopsida, class Liliopsida liliid monocot family; liliid monocot genus; Orchidales, order Orchidales; Liliales, order Liliales