class 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; divided into four
subclasses or superorders: Alismatidae; Arecidae;
Commelinidae; and Liliidae [syn: Monocotyledones, class
Monocotyledones, Monocotyledonae, Liliopsida, class
Liliopsida]