Alismatidae

Synonyms

Alismatale

Alismatales

Najas

Posidonia

Posidonias

Ruppia

Ruppias

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.