Beds of small helophytes of fast-flowing waters

Formations of small helophytes, [Glyceria fluitans], [Glyceria plicata], [Glyceria nemoralis], [Leersia oryzoides], [Catabrosa aquatica], [Sparganium erectum neglectum], [Sparganium erectum microcarpum], [Nasturtium officinale], [Veronica beccabunga], [Veronica anagallis-aquatica], [Apium nodiflorum] and [Sium erectum] occupying the banks of small rivers, brooks, brooklets or springs on alluvial or peaty soils from the Euro-Siberian region, through the Mediterranean basin, to desert oases. Vegetation is typically from alliance Glycerio-Sparganion.