The diploma was written to explore the variety of dendroflora on the area of Mokrec and to explain characteristics of forest association phenomenon and itsmain constitutions that are dependent from altitude, exposition, growth. Some interesting examples from the point of view of extension of species were presented. The purpose of the diploma was to describe the method of the forestmanagement on the area from the past through the modern days. The inter causal relations that reflect the actual situation of the system on the analysed area were found out by the analysis of dendroflora. It was proven by the analysis that variety of vegetation reduces with the inercase of the altitude and the quality of soil has major influence. On the other hand the variety on the highest altitude inercases because of diferentconditions for growth. The habitats of some flora species have been reconfirmed or reevidenedand some particular bigger examples have been remeasured.