Rubus kletensis, a new species from South Bohemia and Upper Austria.

A new species of bramble, Rubus kletensis, of the section Corylifolii Lindley, series Sepincola (Focke) E. H. L. Krause occurring in South Bohemia and Upper Austria is described. The distance between the most distant localities exceeds almost 150 km. This distinct and relatively easily recognizable species grows in rather moist, eutrophic, synanthropic and sunny biotopes, and occurs most frequently in the vegetation of the class Galio-Urticetea, less frequently in that of the alliances Trifolion medii, Pruno-Rubion radulae, Sambuco-Salicion capreae, Berberidion and exceptionally in forest plantations and growths of pioneer saplings. A distribution map for this species and a list of all known localities are included, as well as a drawing of the species.