Farne (Pterophytina) im östlichen Burgenlandkreis – Kurzer Abriss zur historischen und aktuellen Verbreitung

Abstract

Twenty species of ferns have been detected in the area between the rivers Weisse Elster and Wethau (eastern part of the Burgenlandkreis, southern Saxony-Anhalt) during the past 130 years. The Royal Fern (Osmunda regalis) is extinct near Osterfeld. The populations of Moonwort (Botrychium lunaria) and the Adder’s-tongue (Ophioglossum vulgatum) in the northern part of the study area (between Deuben and the state border to Saxonia) have increased. This is a former coalmining area with young grounds and in some parts these species even occur quite frequently.