Plant communities of the thermophilous oak forests in Moravia

A phytosociological synthesis of the order Quercetalia pubescenti-petraeae Klika 1933 in Moravia, the eastern part of the Czech Republic, is based on 319 relevés. Three alliances and 8 associations are distinguished. The alliance Quercion pubescenti-petraeae Br.-Bl. 1932 includes thermophilous oak forests on calcareous bedrocks with two associations: Pruno mahaleb-Quercetum pubescentis Jakucs et Fekete 1957 and Corno-Quercetum Máthé et Kovács 1962. The alliance Aceri tatarici-Quercion Zólyomi 1957 occurs in southern Moravia only, and includes the Pannonian communities of flat landforms, namely the associations Quercetum pubescenti-roboris (Zólyomi 1957) Michalko et Džatko 1965 on chernozems over loess and Carici fritschii-Quercetum roboris ass. nova on sand. Communities of the Central European alliance Quercion petraeae Zólyomi et Jakucs ex Jakucs 1960 are mainly concentrated in the upland fringes of the Bohemian Massif. They comprise the associations Sorbo torminalis-Quercetum Svoboda ex Blažková 1962 and Genisto pilosae-Quercetum petraeae Zólyomi. Jakucs et Fekete ex Soó 1963 on shallow soils over siliceous rocks, as well as Potentillo albae-Quercetum Libbert 1931 on heavy loamy soils and Asplenio cuneifolii-Quercetum petraeae ass. nova on serpentines .