1) Liliopsida 2) Monocotyledonae 
[n] - comprising seed plants that produce an embryo with a single cotyledon and parallel-veined leaves: includes grasses and lilies and palms and orchids
monocotyledones 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 [synonyms: Monocotyledones, class Monocotyledones, Monocotyledonae, class Monocotyledonae,...
class Monocotyledones noun 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; Arecid...