Abstract
In the present paper we show that the concept of the alliance Alyssion euboei (Cisto-Micromerietea), an endemic vegetation unit described from Euvoia island (Greece) by BRULLO et al. (1997), is very heterogeneous (comprising a woodland, phrygana, and therophyte-rich communities) and its name should be rejected as nomen dubium. Also the Erico manipuliflorae-Pinetum. halepensis (designated as holotype of the alliance) should be rejected as nomen dubium because of problematic selection of the nomenclature type. The other two associations assigned to the Alyssion euboei (Stachyo-Alyssetum euboei and Malcolmio-Alyssetum densistellati) were also invalidly described.
