Definition: A plant subclass of the class Liliopsida (monocotyledons) in the Chronquist classification system. This is equivalent to the Alismatales order in the APG classification system. It is a primitive group of more or less aquatic plants.
prefer specific plant; coord with specific PLANT STRUCTURES term if pertinent; for use in therapy coord IM with PHYTOTHERAPY (IM) + disease/drug ther (IM) + PLANT PREPARATIONS or its indentations/ther use (IM or NIM) + specific plant chemical /ther use
ExamplesAlismataceae; Hydrocharitaceae; Potamogetonaceae; Zosteraceae
Other names Ruppias; Posidonias; Alismatale; Ruppia; Posidonia; Najas; Alismatales