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Noun: subclass Alismatidae
  1. One of four subclasses or superorders of Monocotyledones; comprises about 500 species in 14 families of aquatic and semiaquatic herbs
    - Alismatidae

Type of: class

Part of: class Liliopsida, class Monocotyledonae, class Monocotyledones, Liliopsida, Monocotyledonae, Monocotyledones