The study concerning the anthropic vegetation realized in the Berzunţi Mountains area, Bacău County, during 2007-2009, underlined the presence of 8 vegetal ruderal and segetal associations grouped in the following classes: MOLINIO-ARRHENATHERETEA, GALIO-URTICETEA, STELLARIETEA MEDIAE, BIDETETEA TRIPARTITI, 6 orders and 6 alliances.