one of four subclasses or superorders of Monocotyledones; comprises about 500 species in 14 families of aquatic and semiaquatic herbs
[ Syn: alismatidae , subclass alismatidae ]
one of four subclasses or superorders of Monocotyledones; comprises about 500 species in 14 families of aquatic and semiaquatic herbs
[ Syn: alismatidae , subclass alismatidae ]