Cyperus glomeratus L. – rediscovered in Slovakia

Two new and one historical site of Cyperus glomeratus were discovered in SW Slovakia along the left bank of the river Danube. After 60 years, this is the second record of the species in the country. We provide details about the historical and current distribution of C. glomeratus in Slovakia based on herbarium revision and field survey on the Slovak section of the river Danube. According to the phytosociological data collected from the new locality (Čenkov) and from the confirmed historic locality (Štúrovo), the stands with C. glomeratus were identified with less developed, ruderalized form of the association Cyperetum micheliani.