Zur Erforschung der Gattung Rubus in der Tschechischen Republik

Proper research into the Rubus-Flora of the Czech Republic started in 1984 by the late J. Holub and was carried out until his death in 1999. Previous attemps, e. g. by J. Hruby, S. & S. T. Kupscok, and H. Sabransky, had produced mostly false results with a big amount of worthless taxa. This paper deals briefly with the batological merits of J. Holub who rised the knowledge about the genus Rubus in the Czech Republic to a high level. His last discovery was the occurrence of the nordic Rubus wahlbergii Arrh. in the Silesian part of Moravia. A photograph of a relevant specimen is presented. Moreover Rubus josholubii H. E. Weber, dedicated to the memory of Josef Holub, is described as a new species and illustrated by photographs of its holotype. It is distributed reaches from western Bohemia, where it has been only known from its type locality, to central and eastern Bohemia to the Polish border. Distribution map is presented.