Vaccinium-dominated dwarf heaths of the subalpine belt of southern mountains, in particular, of the northern and central Apennines, the Balkan Range, the Hellenides, the Pontic Range and the Caucasus, with Vaccinium myrtillus, Vaccinium uliginosum s.l., Vaccinium vitis-idaea and, locally, Empetrum nigrum. They are richer in grassland species than the communities of unit F2.24 and often take the appearance of alpine grassland with dward shrubs. Vaccinium myrtillus also plays a much more dominant role, in lieu of Vaccinium uliginosum and Empetrum hermaphroditum.
Vaccinium dwarf heaths of the subalpine or lower alpine belt of mountains of the Italian peninsula and of the large Tyrrhenian islands formed by Vaccinium myrtillus and Vaccinium uliginosum s.l., with a large admixture of alpine or subalpine grassland species and sometimes of megaforb elements.