Taxonomy of Rubus ser. Discolores in the Czech Republic and adjacent regions

The current state of the taxonomy of Rubus set. Discolores in the Czech Republic is summarized. Since 1995, when the group was treated in the Flora of the Czech Republic (Holub 1995). six new species have been recognized, some of which are also known from adjacent areas. They are described in the present study: R. austroslovacus Travnicek. R. flos-amygdalae Travnicek et Holub. R. guttiferus Travnicek et Holub, R. parthenocissus Tradvnicek ek et Holub, R. pericrispatus Holub et Travnicek and R. portae-moravicae Holub et Travicek. The first five belong to the group of triploid species close to R. montanus Lej. and R. grabowskii Weihe. whilst R. portae-moravicae is related to R. praecox Bertol. Two additional species, originally recognized under provisional names,. were found to be identical to species described earlier: R. perperus H. E. Weber and R. phyllostachys P. J. Mueller the latter is also found in Slovakia. At present. 17 indigenous species. one naturalized alien (R. armeniacus Focke) and one rare garden escape (R. ulmifolius Schott) of the set. Discolores are known to occur in the Czech Republic. Distribution data and a key for the identification of all the species are presented.