Liliidae is abotanical name at therank ofsubclass.[1]Circumscription of the subclass will vary with thetaxonomic system being used (there are many suchsystems); the only requirement being that it includes the familyLiliaceae.
TheTakhtajan system treats this as one of six subclasses within classLiliopsida (=monocotyledons). This subclass consists of:
TheCronquist system treats this as one of five subclasses within class Liliopsida (=monocotyledons), and it consists of:
In theDahlgren system and theThorne system (1992) this is an important name: this subclass comprises themonocotyledons (in APG II these are themonocots).
(in the version of the system as depicted by Reveal)
TheAPG andAPG II systems do not use formalbotanical names above therank of order, and names such as Liliopsida and Liliidae have no place in these systems.