New localities of Rubus clusii (Rosaceae) seriously expanding it range towards the East

摘要

Rubus clusii Borbás is a species which occurs in Central Europe, from southern Germany, Czech Republic, southwestern Slovakia, through western Hungary and Austria to Slovenia. Nine new localities of this taxon were found in southeastern Poland, which considerably extends its geographical range. The results of one study suggest that the present definition of the species range was based on incomplete data, missing its potential localities. Therefore, we expect further extension with more localities identified.Additional key words: Rubus clusii, distribution, species new to Poland