This association includes stands of low-growing perennial amphibious herbs, dominated by Juncus bulbosus and Ranunculus flammula. It occurs in the littoral zones of lakes, fishponds, water reservoirs, flooded sand pits, hollows after peat extraction and ditches along forest roads. It is periodically flooded by oligotrophic to mesotrophic, rarely dystrophic water, which can reach depths up to 25 cm. It occurs in the colline to submontane belts of Bohemia and western Moravia.