This species-poor vegetation type is dominated by Potamogeton natans, which forms dense stands of broad leaves floating on the water surface. It occurs mostly in mesotrophic, but also in oligotrophic or eutrophic water bodies with 20–100 cm deep, still or slowly moving water, e.g. in small fishponds, pools in quarries and sand pits, oxbows, alluvial pools, channels, and lentic sections of streams. Potamogeton natans often appears in the early stages of terrestrialization, but it grows slowly and forms extensive stands only in the later successional stages. This association occurs from the lowlands to mountain areas across the Czech Republic.