Abstract
Thermophilous fringe communities of the Trifolio- Geranietea recorded on the southern slope of the Horný vrch Plateau in the Slovak Karst (E Czechoslovakia) were classified into 5 vegetation types, such as the Geranio-Trifolietum alpestris, Galium mollugo-Geranium sanguineum community, Inula ensi folia-Origanum vulgare comm., Trifolium alpestre- Brachypodium pinna turn comm., and Dorycnium herbaceum- Brachypodium pinnatum comm. The synsystematic relations among the vegetation types were studied by methods of cluster analysis and principal components analysis. A coenocline of the communities, spanning subxeric to xeric habitats was detected.