Luronium natans is a rare, endangered and protected species, which requires areas
Nature 2000 to be designated. The research on the population of this species in Orzechowskie
Lake (Western Pomerania, Poland) was conducted in 2007. 21 concentrations of Luronium
natans, each on area 0.04–1.0 m2
were recorded and characterized. In 12 of them blooming
specimens were observed, but fruits were not found. The plant propagates only vegetative on
described site. On the basis of 12 releves Luronietum natantis community was distinguished
with Luronium natans and Hydrocotyle vulgaris as dominant.