Sparse formations of narrow-leaved floating pondweeds (Potamogeton polygonifolius, P. gramineus, P. alpinus), water starworts (Callitriche), water crowfoots (Ranunculus ololeucos, R. omiophyllus), floating water plantain (Luronium natans), least bur-reed (Sparganium minimum) of shallow, oligotrophic, clean, fluctuating, but usually permanent, often small, waterbodies