Klassifizierung mit supraspezifischen Taxa und symphylogenetische Ansätze in der Vegetationskunde
After suggesting a more precise use of the terms "vicarious", "pseudovicarious" and "corresponding" in vegetation science, some classification approaches are discussed which use of supraspecific taxa. The effects of changing the taxonomic level on the classified units and the ecological information are studied by numerical methods. Environmental profiles and site preferences of families are elaborated. Most approaches are phylogenetical and ask for the age of communities. The use of supraspecific taxa for the description of vegetation units is called the coenosyntaxon concept. It is useful for classes which are poor in species and are characterized by relict endemics. Classification is then based upon evolution and vegetation history. Phylogeny of communities is like a network and a symphylogenetic tree can be established only very rarely. More rewarding is an approach starting from the taxa and looking for correlations between their phylogeny, ecological adaptation and sociological linkage. This attempt is made by studying Pinguicula, Primula and Hypericum within the Adiantetea- communities, where ancient forms of those genera have survived.