This association includes dense stands of Alisma lanceolatum in shallow water or open stands of this species on non-flooded, wet mineral soil. It occurs in alluvial pools, littoral zones of small fishponds, flooded sand pits, ditches and wet depressions in arable fields and meadows. It is confined to dry, continental areas, and tolerates wetland desiccation in summer better than A. plantago-aquatica. This association has been recorded in lowland areas of northern and central Bohemia and southern Moravia.