Die Mauerraute Asplenium ruta-muraria L. im Tiefland von Niedersachsen (mit Bremen - Nordwest-Deutschland)

Abstract

Asplenium ruta-muraria L. (wall-rue) is an endangered species in the lowlands of Lower Saxony and Bremen. Since 1990 it can be observed mainly in the districts/regions of Aurich, Bentheim, Bremen, Emden, Emsland, Friesland, Hannover, Leer, Nienburg, Osnabrück, Soltau-Fallingbostel and Wilhelmshaven