Oligotrophic pondweed communities

Sparse formations of narrow-leaved floating pondweeds, in particular, [Potamogeton gramineus], [Potamogeton alpinus], with [Callitriche] spp., [Ranunculus tripartitus], [Sparganium] spp., of shallow, oligotrophic, clean, fluctuating, but usually permanent, often small, waterbodies of the Palaearctic region. Communities of this unit often form in close proximity to those of unit C3.413 and evolve into them with regular or prolonged desiccation.