A nomenclatural revision of the Illyrian beechwoods of Slovenia, Croatia, Southwestern Hungary, Southern part of Carinthia (Austria) and Northeastern part of Italy (Veneto and Friuli-Venezia Giulia) is presented. Some beechwoods from Bosnia and Herzegovina as well as Montenegro have also been considered. The names of the Aremonio-Fagion, 4 suballiances as well as 22 associations have been revised, nomenclatural types selected and copious synonyma assigned.
