Unpublished locality of marsh clubmoss lycopodiella inundata in rzepin forest district (western poland) and its endurance to environmental disturbances in years 2010–2017

In years 2010–2017 a population of ca 50 individuals (polycormons) of marsh clubmoss Lycopodiella inundata have been observed in the area of transitional peat-bog located only 100 m southward from A2 Highway, about 1.8 km to the west from Rzepin town (western Poland). During the observation period, the hydrological conditions of peat bog had been significantly changing, from average water saturation in years 2010–2012, through significant flooding in years 2013–2014 and next – a drought in 2015–2016. Despite this fluctuations of water level in the peat-bog outskirt, the marsh clubmoss population, growing on a surface of the bog deposits in central part of the bog stayed unharmed, and no disturbances of plant growth, nor of sporangia spikes forming were observed.