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Noun1.Alismatidae - one of four subclasses or superorders of MonocotyledonesAlismatidae - one of four subclasses or superorders of Monocotyledones; comprises about 500 species in 14 families of aquatic and semiaquatic herbs
class - (biology) a taxonomic group containing one or more orders
class Liliopsida, class Monocotyledonae, class Monocotyledones, Liliopsida, Monocotyledonae, 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
References in periodicals archive ?
Plants in many families have evolved to get a little bit wet, but only the small seagrass group in the subclass Alismatidae have managed to go all the way to gather their light and pass on their genes completely under saltwater.
This publication will eventually include all vascular plants with volumes published to date covering all ferns, fern allies, gymnosperms, and some angiosperms including two subclasses of dicots, Magnoliidae and Hamamelidae, and four subclasses of monocots, Alismatidae, Arecidae, Commelinidae (in part), and Zingiberidae.