A great number of taxa occurring in Slovakia are put into a group of rare, threatened and endemic plants. We can give to each of them a certain value in regard of occurrence in our territory, endemism, binding to smaller or larger territory, threat up to disappearance. Map bases can be made on the base of these data for every territory of Slovakia, which characterize these ones from the point of view occurrence of single plant groups. This map set enables also to characterize the territory with regard to its rareness, inviolation, stability and diversity conservation. On the other hand it is possible to characterize the given territory from the point of view of nature conservation needs and to call attention to such territories, which till now do not belong to any existing system of protected territories. An increasing attention is required either in consequence of occurrence of rare, threatened and endemic species, or in consequence of a strong anthropic pressure to a relatively natural and little violated and changed natural environment.