Príspevok k rozšíreniu lišajníka Usnea florida na Slovensku

The lichen Usnea florida is a critically endangered species of the Slovak lichen flora. A distribution map was created based on data collected by studying herbarium specimens, literary sources and fieldwork. Usnea florida occurs in mountain forests at elevations approximately between 800 and 1,500 m. In Slovakia it was found at 25 localities in eight phytogeographical districts. The occurrence of the species at eight localities is documented by herbarium specimens, and one locality is supported by chemical analysis. A new locality was discovered in the Slovenské Rudohorie Mts. Additional localities are likely to be found in the future.