An outlook of plants alliance identified on land and coastland, Southeastern Europe

Abstract Land and coastland vegetation is diverse in Southeastern Europe. Plant species are identified and monitored. Yet, there are plant species not fully observed in Southeastern Europe. This study investigated verified and uncertain plant (herb, shrub, tree) alliances occurrences data extracted from Database of European Vegetation, Habitats and Flora until the year 2024, for Albania, Bosnia and Herzegovina, Croatia, Montenegro and Slovenia of Southeastern Europe using descriptive statistics. Verified herb, shrub and tree alliance occurrences were respectively 64.5 percent, 56.3 percent and 21.7 percent, and uncertain herb, shrub and tree alliance occurrences on land were, on average, respectively, 70.5 percent, 13.9 percent and 15.4 percent in the five Southeastern European countries. The uncertain herb alliance percentage tended to be higher compared to the uncertain shrub and tree alliance percentage in the five countries.