(comprising seed plants that produce an embryo with a single cotyledon and parallel-veined leaves: includes grasses and lilies and palms and orchids
divided into four subclasses or superorders: Alismatidae
Arecidae
Commelinidae
and Liliidae)
Monocotyledones, class Monocotyledones, Monocotyledonae, class Monocotyledonae, Liliopsida, class Liliopsida